Circuit Breakers
Naval Shipboard Use
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 1
Circuit Breakers
for Naval
Shipboard Use
Contents
Description Page
Selector Guide for
Navy Circuit Breakers . . . . . . 2
General Information . . . . . . . . 3
Design Features . . . . . . . . . . . 3
Standard Features . . . . . . . . . 4
Application . . . . . . . . . . . . . . . 5
General Ordering
Information . . . . . . . . . . . . . . 5
Marine Breaker
Application . . . . . . . . . . . . . . 5
Types ALB-1, NLB-1 . . . . . . . 6
Product Selection . . . . . . . . . 6
Outline Dimensions . . . . . . . 8
Time-Current Curve . . . . . . 16
Types AQB-A50,
NQB-A50 . . . . . . . . . . . . . . 17
Product Selection . . . . . . . . 17
Outline Dimensions . . . . . . 19
Time-Current Curve . . . . . . 22
Description Page
Types AQB-A51,
NQB-A51 . . . . . . . . . . . . . . 23
Product Selection . . . . . . . . 23
Outline Dimensions . . . . . . 25
Time-Current Curve . . . . . . 28
Types AQB-A100,
NQB-A100 . . . . . . . . . . . . . 29
Product Selection . . . . . . . . 29
Outline Dimensions . . . . . . 32
Time-Current Curve . . . . . . 33
Types AQB-A101,
NQB-A101 . . . . . . . . . . . . . 34
Product Selection . . . . . . . . 34
Outline Dimensions . . . . . . 38
Time-Current Curve . . . . . . 42
Types AQB-A103 RMS,
NQB-A103 . . . . . . . . . . . . . 44
Product Selection . . . . . . . . 44
Time-Current Curve . . . . . . 45
Description Page
Types AQB-A250,
NQB-A250 . . . . . . . . . . . . . 48
Product Selection . . . . . . . . . 48
Outline Dimensions . . . . . . . 54
Time-Current Curve . . . . . . .59
Types AQB-LF100,
AQB-LF250. . . . . . . . . . . . . . 60
Product Selection . . . . . . . . . 61
Outline Dimensions . . . . . . . 65
Time-Current Curve . . . . . . .69
Types AQB-A253,
AQB-L253, NQB-A253 . . . . .70
Product Selection . . . . . . . . . 71
Outline Dimensions . . . . . . . 75
Time-Current Curve . . . . . . .77
Types AQB-L400,
AQB-LL400, NQB-LL400 . . 78
Product Selection . . . . . . . . 79
Outline Dimensions . . . . . . 83
Time-Current Curve . . . . . . 86
Description Page
Type NQB-A803 . . . . . . . . . . 98
Product Selection . . . . . . . . 98
Outline Dimensions . . . . . . 99
Types AQB-A1601,
NQB-A1601 . . . . . . . . . . . 100
Product Selection . . . . . . . 100
Outline Dimensions . . . . . 102
Time-Current Curve . . . . . 107
Types AQB-A1602,
NQB-A1602 . . . . . . . . . . . 109
Product Selection . . . . . . . 110
Outline Dimensions . . . . . 111
Time-Current Curve . . . . . 112
Types ACB 1600/2000HR
— 3200/4000HR. . . . . . . . 113
Outline Dimensions . . . . . 115
Time-Current Curve . . . . . 117
2 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Selection
Guide
Circuit Breakers for
Naval Shipboard Use
5 to 4000 Amperes, 1500 to
150,000 Amperes I.C.
SELECTOR GUIDE FOR NAVY CIRCUIT BREAKERS
ACB ratings are symmetrical;
all others are asymmetrical.
A 5 ampere breaker has an inter-
rupting rating of 1500 amperes
ac or dc.
See MIL-spec or call Eaton for
400 Hz ratings.
BREAKER
TYPE SPECIFICATION
HI-SHOCK
SPEC
NO. OF
POLES
AMPERE
RATING
VOLTAGE
RATING
INTERRUPTING
RATING,
AMPERES
TRIPPING
ELEMENTS PAGE
ALB-1 MIL-C-17588 MIL-S-901 1 5 – 50 125 Vdc
125 Vac
2,500
5,000
Thermal
Magnetic
6
NLB-1 MIL-C-17588 MIL-S-901 1 50 125 Vdc
125 Vac
— None 6
AQB-A50 MIL-C-17361 MIL-S-901 3 10 – 50 500 Vac 5,000 Thermal
Magnetic
17
NQB-A50 MIL-C-17361 MIL-S-901 3 50 500 Vac — None 17
AQB-A51 MIL-C-17361 MIL-S-901 3 10 – 50 500 Vac 5,000 Thermal
Magnetic
23
NQB-A51 MIL-C-17361 MIL-S-901 3 50 500 Vac — None 23
AQB-A100 MIL-C-17361 MIL-S-901 2, 3 15 – 100 250 Vdc
500 Vac
10,000
15,000
Thermal
Magnetic
29
NQB-A100 MIL-C-17361 MIL-S-901 2, 3 100 250 Vdc
500 Vac
— None 29
AQB-A101 MIL-C-17361 MIL-S-901 3 15 – 100 250 Vdc
500 Vac
10,000
15,000
Thermal
Magnetic
34
NQB-A101 MIL-C-17361 MIL-S-901 3 100 250 Vdc
500 Vac
— None 34
AQB-A103 MIL-C-17361 MIL-S-901 3 10 – 100 500 Vac 15,000 Electronic 44
NQB-A103 MIL-C-17361 MIL-S-901 3 100 500 Vac — None 44
AQB-A250 MIL-C-17361 MIL-S-901 2, 3 100 – 250 250 Vdc
500 Vac
15,000
20,000
Thermal
Magnetic
48
NQB-A250 MIL-C-17361 MIL-S-901 2, 3 250 250 Vdc
500 Vac
— None 48
AQB-LF100 MIL-C-17361 MIL-S-901 3 15 – 100 500 Vac 100,000 Thermal
Magnetic
Fuses
60
AQB-LF250 MIL-C-17361 MIL-S-901 3 125 – 250 500 Vac 100,000 Thermal
Magnetic
Fuses
60
AQB-A253 MIL-C-17361 MIL-S-901 3 100 – 250 500 Vac 30 kA Electronic 70
AQB-L253 MIL-C-17361 MIL-S-901 3 100 – 250 500 Vac 100 kA Electronic 70
NQB-A253 MIL-C-17361 MIL-S-901 3 250 500 Vac — None 70
AQB-L400 MIL-C-17361 MIL-S-901 3 250 – 400 500 Vac 150,000 Electronic 78
AQB-LL400 MIL-C-17361 MIL-S-901 3 250 – 400 500 Vac 100,000 Electronic 78
NQB-LL400 MIL-C-17361 MIL-S-901 3 400 500 Vac — None 79
NQB-A803 MIL-C-17361 MIL-S-901 3 800 at 60 Hz 500 Vac — None 98
NQB-A803 MIL-C-17361 MIL-S-901 3 650 at 400 Hz 500 Vac — None 98
AQB-A1601 MIL-C-17361 MIL-S-901 3 500 – 1600 500 Vac 75,000 Thermal
Magnetic
100
NQB-A1601 MIL-C-17361 MIL-S-901 3 1600 500 Vac — None 100
AQB-A1602 MIL-C-17361 MIL-S-901 3 400 – 1600 500 Vac 100,000 Electronic 109
NQB-A1602 MIL-C-17361 MIL-S-901 3 1600 500 Vac 100,000 None 109
ACB 1600HR
ACB 4000HR
MIL-C-17587 MIL-S-901 3 320 – 4000 500 Vac 85,000 Electronic 113
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 3
General
Information
Front view of assembled AQB-A250
Navy circuit breaker. Note that the
shock resistant material (MIL-M-14)
used for housing and cover is
light gray.
Rear view of breaker showing
terminal blocks for switchboard
mounting. (Terminal block attached
at line end of breaker and removed
from load end.)
Description
These molded case Navy circuit
breakers provide both overload
protection for conductors and
short circuit protection for all
circuit elements such as conduc-
tors, motors and starters. They
also serve as manual disconnect-
ing means as well as circuit
protectors.
All Eaton’s Cutler-Hammer
circuit breakers in this Product
Guide meet applicable Navy
specifications for “hi-shock.”
These manually operated break-
ers are rated from 5 to 4,000
amperes with interrupting rat-
ings from 1,500 to 150,000
amperes. (See “Selector Guide”
on Page 2 for ratings and Navy
specifications.)
Design Features
Cutler-Hammer Navy circuit
breakers retain all the features
of standard commercial type
AB DE-ION breakers listed on
Page 4
under “standard features.”
Built to Navy specifications, they
incorporate the following Navy
requirements:
Specific Navy Features
●Qualified Products — All
Navy circuit breakers undergo
rigorous qualification testing
to MIL-C-17361 and are listed
on the associated Qualified
Products List issued by the
federal government. (ACB’s
per MIL-C-17587, ALB-1’s per
MIL-C-17588, and AQB’s per
MIL-C-17361.)
●Shock-Resistant Molded
Case — Housing consists of
rear base section and cover
molded of glass alkyd material.
This material, reinforced glass
filled thermosetting plastic,
has very high mechanical
strength (shock and impact
resistance), is both fire and
moisture-resistant and
provides excellent dielectric
characteristics.
●Anti-Shock Device — Inertia
weight over center pole holds
trip bar in latched position
under shock conditions but
does not prevent thermal
or magnetic trip units from
functioning on overload and
short circuits.
●Shock and Vibration
Resistant — Navy circuit
breakers are all tested to
MIL-S-901 for Hi Impact
Shock, and MIL-STD-167 for
Mechanical Vibration. This
test ensures that the circuit
breakers will operate properly
in the Naval shipboard
environment.
●EMI Resistant — All Navy
circuit breakers with Electronic
Trip Units (ETUs) are tested for
electromagnetic immunity and
emissions per MIL-STD-461
and -462 to eliminate
interference from radiated or
conducted EMI.
●50°C Calibrated — Thermal-
magnetic circuit breakers are
calibrated for 50°C ambient
temperature. The calibration
of circuit breakers with ETUs
are inherently unaffected by
ambient temperature.
●Interchangeable Trip Units
— All thermal and magnetic
trip units in AQB circuit
breakers are encased in
sealed, self-contained units
that are interchangeable with
other trip units of different
ampere ratings within the
same frame size.
Note:
Interchangeable trip units are not
available in the A101, ALB-1, A50
or A51.
●Plug-in Connectors —
All Navy circuit breakers are
designed for optional molded
plug-in bases in a variety of
styles. Smaller breakers
(ALB-1, A50 and A51) must
be used with the associated
bases. Other MCCBs can be
converted for direct cable or
plug-in mount. Plug in bases
are available in a variety of
styles depending upon the
circuit breaker type. See the
specific circuit breaker style
for available mounting bases
and outline drawings.
Note:
All A101, A50 or A51 breakers
have plug-in connectors. Front or
rear connectors determined by
mounting base selected.
ALB breakers have a clamp
terminal on the line end to
receive panelboard bus stab
projections.
●Interrupting Ratings to
150 kA — Navy circuit
breakers are available with
interrupting ratings up to
150 kA, many using modern
fuseless current-limiting
technology. Circuit breakers
rated 100 ampere and below
must be used with associated
current limiting fuses to
achieve high interrupting
capacity.
Operating Handle
Shown In
Off Position
Ampere Marker
Slip Type
Connectors
Terminal
Studs
Mounting
Block
Mounting
Studs
Plug-in
Studs
Terminal
Mounting
Block
4 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
General
Information
Standard Features
●Corrosion-Resistant — All
parts are specially treated to
resist corrosion. Fungus-
moisture resistant treatments
for severe atmospheres are
available as modifications.
●Positive Position Indication
— Position of handle always
indicates ON, OFF, or
TRIPPED.
●Free-Bearing Surfaces —
Dissimilar metals are used
to prevent bearing wear and
eliminate sticking.
●DE-ION Arc Quenchers —
This Eaton development
consists of a series of grid
plates mounted in parallel
between supports of
insulating material. The slots
in the steel plates are directly
over the contacts and draw
the arc from the moving
contact up into the divided
chamber where it is confined,
divided, and extinguished.
●Silver Alloy Contacts —
Special silver alloy contacts
prevent sticking and welding,
increase contact life and
insure low resistance when
carrying full-rated load.
●Quick-Make, Quick-Break
Over Center Toggle
Mechanism — Provides
quick, positive action in
opening and closing of
circuits, prevents “teasing”
of contacts and reduces
contact wear.
●Complete Interpole Barriers
— Ensure against internal
flashovers when faults occur.
●Common Trip — Two and
three-pole units have insulated
common trip bar that opens
all poles simultaneously when
an overload occurs on any one,
thus eliminating possibility of
single-phasing.
●Tested Accuracy — All
tripping members have ground
and polished latch surfaces
heat treated to prevent galling
or later distortion. All parts are
tested in temperature-
controlled atmosphere to
ensure correct calibration and
perfect mating. Each breaker
is thoroughly tested.
●Factory Sealed — Smaller
breakers are factory sealed
to prevent tampering with
calibration. Interchangeable
trip units are individually
sealed.
Arc Chute
Moving Arm
Operating
Mechanism
Trip
Mechanism
Breaker
Front
Cover
Removed
Arc Chute
Removed
Molded
Operating
Handle
Removed
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 5
Application
Designed primarily for circuit
protection, Cutler-Hammer Navy
circuit breakers are used in light-
ing and power panels, switch-
boards, distribution centers and
load centers aboard ship. The
photograph above illustrates the
use of molded case circuit break-
ers and air circuit breakers in a
typical Navy switchboard.
General Ordering
Information
When ordering Cutler-Hammer
Navy circuit breakers, consult the
check list below to make sure
you have provided correct infor-
mation. You should specify:
1. Quantity, Cutler-Hammer
Part Number and National
Stock Number of:
a. Complete breaker or
frame, trip unit, fuses
(where required) and/or
attachments where
available.
b. Plug-in mounting block or
front connecting cable
terminals.
c. Spare breakers or trip
units. (Usually one
required for each 10 units
or fraction thereof of
each current rating.)
d. Technical Manuals.
2. Shipment
Specify transportation
means, method of packag-
ing and preservation, and
required shipping date.
3. Drawings
Specify quantity of outline
or master plan drawings
required.
4. Inspection
Indicate whether Govern-
ment Source Inspection (GSI)
is required at factory prior to
shipment. This should
appear as a “shipping note.”
Marine Breaker
Applications
Eaton also manufactures a com-
plete family of marine circuit
breakers for Navy non-combatant
ships, U.S. Coast Guard vessels,
Military Sealift Command vessels,
commercial vessels, offshore
drilling rigs, etc. These marine
breakers are different from high
shock MIL-spec breakers. They
meet any or all of various marine
specifications such as ABS,
USCG-CFR46, IEEE45, UL 489
Supplements SA and SB,
UL 1066 Supplement SA, Lloyd’s
of London, DNV. Call Eaton for
more details.
© Timeless Images
6 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ALB-1
and NLB-1
Circuit Breakers for
Naval Shipboard Use —
Types ALB-1 and NLB-1
Breakers
125 Volts ac and dc, 50 Amperes
Maximum, 5000 Amperes I.C.
ALB-1 Navy Circuit Breaker
Note:
Clamp type stab terminal for
panelboard mounting at line end
and pressure type terminal for
front connection at load end.
Specification: MIL-C-17588
●5 – 50 amperes, 60 or
400 cycle.
●125 volts ac or dc single-pole.
Interrupting Rating
10 – 50 ampere units:
5,000 amperes ac and 2,500
amperes dc.
5 ampere unit: 1,500 amperes
ac or dc.
High shock Navy ALB-1 circuit
breakers are designed for ship-
board protection of single-phase
ac and dc circuits or three-phase
ac circuits when breakers are
connected by handle yokes for
2- and 3-pole operation.
The NLB-1 breaker is the non-
automatic design of the ALB-1.
Since the tripping element is
omitted, it is used as a manual
disconnect.
Non-adjustable thermal and mag-
netic trip elements are factory
calibrated and sealed. The trip-
ping element is counterbalanced
to reduce possibility of accidental
tripping under shock. All parts
are given a corrosion-resistant
treatment in compliance with
MIL-E-917.
Plug-in line connections simplify
panelboard mounting. A clamp
type terminal on the line end of
the breaker provides plug-in
connection to bus stabs in panel-
board mounting blocks. For front
connection, there is a pressure
type terminal on the load end of
the breaker.
ALB-1 AND NLB-1 CIRCUIT BREAKER PRODUCT SELECTION — NET WEIGHT 8 OZ.
For list prices, see Price and
Availability Digest (PAD).
Tripping element omitted for
manual disconnect. Letter “N”
hot stamped in white on handle.
Special ALB-1 and NLB-1
Breakers
Similar to above except to have
a 1A-1B auxiliary switch rated
5 ampere resistive, 250 volts ac
or 30 volts dc maximum (Not
submitted for Navy approval, and
does not use breaker mounting
bases.) Order by description.
TYPE AMPERE RATING STYLE NUMBER NATIONAL STOCK NUMBER
ALB-1 5 454D507G01 5925-00-204-7494
ALB-1 10 454D507G02 5925-00-204-7488
ALB-1 15 454D507G03 5925-01-244-1756
ALB-1 20 454D507G04 5925-00-501-5051
ALB-1 25 454D507G05 5925-00-549-5359
ALB-1 30 454D507G06 5925-00-549-5360
ALB-1 35 454D507G07 5925-00-549-5362
ALB-1 40 454D507G08 5925-00-546-3076
ALB-1 50 454D507G09 5925-00-549-5365
NLB-1 50 454D507G10 5930-00-548-7068
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 7
Mounting Bases
Top View of Typical ALB-1 Panelboard
Mounting Base (Style 454D509G04)
Drawings Available
Master drawing 900J396;
breaker outline 314C218;
mounting bases 455D791
and 369D592.
Technical Manual
NAVSHIPS No. 362-2228. This
booklet per MIL-M-15071. When
required, order BVR-TM-378.
Note:
These breakers are non-repair-
able per NAVSEA letter, serial
number 9077 Ser 03/03 EI-48,
paragraph 3 Policy, sub-para-
graph 2, dated 25 October 1994.
PANELBOARD MOUNTING AND ACCESSORIES
In dc or single-phase panel
applications, basic pattern is one
molded base accommodating four
single-pole breakers. (See Pages
10 – 12.)
In 3-phase application where basic
pattern is three molded bases, one
454D509G04 and two 454D509G05
are required, each base accommo-
dating two breakers per circuit.
(See Page 10.)
For 3-phase application where
basic pattern is one molded base
accommodating up to six breakers
or two breakers per circuit.
(See Pages 12 – 14.)
Ordering Information: See Page 5.
Individual Reproductions
When required, reproductions of
master drawings, outline draw-
ings and certification sheets can
be ordered as follows:
Handle Yokes
Provide interlocking of two or
three one-pole breakers for
simultaneous operation. Individual
pole tripping is obtained without
normal trip indicating (center)
position.
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
NET WEIGHT,
LBS. (KG)
Single Breaker, Front Panel Supported 454D509G01 5925-01-005-4983 .25 (0.11)
Single Breaker, Surface Mounted 454D509G02 5925-00-177-6349 .25 (0.11)
Two Breakers, Front Panel Supported 454D509G03 5925-01-343-9108 .50 (0.23)
dc, Single-Phase and Part (1/3) of Combination
for 3-Phase 454D509G04 5925-00-660-3562 .67 (0.3)
Part (2/3) of Combination for 3-Phase Application 454D509G05 5925-00-201-7175 .67 (0.3)
3-Phase Panel Application 454D509G06 5925-00-544-5980 1.00 (0.5)
dc, Single-Phase and Part (1/3) of Combination
for 3-Phase 454D509G08 5925-00-201-7176 .67 (0.3)
ITEM DESCRIPTION
1 Full Size Photolithic Tracing of Master Drawing on Vellum
2 Outline and Drilling Plan on Vellum
3 Certification Data on Vellum
4 Reproductions of Items 1, 2 or 3
NUMBER
OF POLES
STYLE
NUMBER
NATIONAL
STOCK NUMBER
2207B508H01 5925-00-202-0938
3207B508H02 5930-00-862-5582
8 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ALB-1
and NLB-1
Outline Dimensions ALB-1
Breaker and Mounting Bases
— Dimensions in Inches
Breaker Outline
Single Base,
Front Panel Supported
(454D509G01)
Two Breaker Base,
Front Panel Supported
(454D509G03)
STANDARD BREAKER SPECIAL BREAKER WITH AUXILIARY SWITCH
1-63
/
6
4
Lin
e
Stab
7
/
1
6
3
/
3
2
Details of Male Co
pp
er Sta
b
(
Not Furnished with Circuit Breakers
)
3
/
64
R
29
/
3
2
29
/
3
2
1-5
/8
t
Ampere Ratin
g
3
/
1
6
Of
f
3/1
6
On
1º
T
ri
pp
e
d
7
/8
9º
9º
3
/
3
2
2-5
/
1
6
3
/
1
6
Mountin
g
S
l
ot
31
/
3
2
1
/4
29
/
3
2
1/
2
5
/
3
2
C
L
C
C
3-1
/2
1-41
/
6
4
1
/
32
R
1-15
/
1
6
15
/
1
6
3/
8
/
/
15/32
2
32
1-13
/
3
2
1
/2
1
/2
Ampere Ratin
g
9/3
2
9
/
1
6
3
/
3
2
3
/
1
6
3
/8
1
/4
1
/8
2-5
/
1
6
1
/4
3/4
3/4
4
4
11
/
3
2
5
/
1
6
29
/
3
2
5
/
1
6
C
L
C
C
of
H
a
n
d
l
e
Piv
o
t
1-41
/
6
4
1
/
32
R
On
29
/
3
2
9º
31/3
2
00
00
Reset
7
/
3
2
7
/8
19
/
3
2
3
/
3
2
5
/8
39
/
64
15
/
3
2
7
/
1
6
1-63
/
6
4
1
/
3
2
15
/
1
6
3
/
3
2
3
/8
1-5
/8
13
/
1
6
2 Screws, Steel, .190-32 X 3 Furnished with
Lockwashers for Securin
g
to Panel Front Cover
.190-32 Ta
p
(2 Holes
)
C
C
L
C
C
Base
,
Breaker and
Mountin
g
Plat
e
3
/
1
6
1-31
/
3
2
5
/
3
2
1
/2
1
/4
1-1
/4
5
/8
1
Steel Plate 5
/
64 Thic
k
1
2-1
/4
2-5
/8
2 Screws
,
Steel
,
.190-32 X 3 Furnished with
Lockwashers for Securin
g
to Panel Front Cover
.190-32 Ta
p
(2 Holes
)
C
L
C
C
5
/
3
2
1
/2
1/
4
3
/
1
6
1
/2
5
/8
Steel Plate 5
/
64 Thic
k
o
f M
ou
n
t
i
n
g
Plat
e
1
/
3
2
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 9
Single Base
Surface Mounted
(454D509G02)
Mounting of Surface
Mounted Bases
Mounting of Front Panel
Supported Bases
SIDE VIEW
SIDE VIEW
2-POLE HANDLE YOKE 3-POLE HANDLE YOKE
(207B508H01) (207B508H02)
C
C
CC
3
/
4
Br
ea
k
e
r E
scutc
h
eon
C
L
C
C
o
f B
ase
a
n
d
Br
ea
k
er
C
ri
t
i
ca
l Dim
e
n
s
i
o
n
s
of
Stab and Mountin
g
Cli
p
5
/
3
2
7
/
6
4
31
/
3
2
15
/
3
2
15
/
6
4
3
/
3
2
7
/
3
2
15
/
6
4
45
/
64
3-21
/
3
2
2-15
/
3
2
1-31
/
3
2
1
/2
1
/2
C
L
C
C
Br
ea
k
e
r E
scutc
h
eo
n
C
ri
t
i
ca
l Dim
e
n
s
i
o
n
s
of
Stab and Mounting Clip
Mountin
g
Bracket or Inside o
f
Enclosure (Su
pp
lied b
y
Customer
)
2-.190-32 Base Mountin
g
Screws 3/8 Lon
g
19
/
3
2
2-21
/
3
2
3-1
/
6
4
5
/
3
2
7
/
1
6
1
/
1
6
1
1
/
3
2
11
/
3
2
21
/
3
2
31
/
3
2
3-17
/
6
4
C
L
C
C
2-.1
90
-
3
2 X
3
B
ase
Mounting Screw
s
In
s
i
de
o
f P
a
n
e
l
o
r
En
c
l
osu
r
e
Fr
o
n
t
1
/
16 Thick Stee
l
5
/
1
6
27
/
6
4
1-5
/
1
6
1
/2
5
/
6
4
1-29
/
3
2
2-47
/
6
4
39
/
6
4
Breaker Escutcheon and Mounting Screw
s
w
w
2-15
/
3
2
.1
95
.2
34
1-15
/
3
2
.1
95
.2
34
10 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ALB-1
and NLB-1
Outline Dimensions ALB-1
Breaker and Mounting Bases
— Dimensions in Inches,
Continued
Application in dc and
Single-Phase Panels
(Two Separate Bases shown.
Basic Pattern is One Molded
Base Accommodating Four
Single-Pole Breakers)
3-Phase Panel Application
for Two Breakers Per Load
Circuit
(Basic Pattern of Three Separate
Molded Bases can be Repeated
for Longer Panel Boards)
Outline Dimensions
for Mounting Bases
454D509G04 or
454D509G05
FRONT VIEW
SIDE VIEW
1
C
C
C
C
L
L
C
C
CC
C
C
C
L
L
L
C
C
C
C
CC
1-27
/
3
2
1-27
/
3
2
1
/
3
2
7
/
1
6
7
/
1
6
7
/
1
6
7
/
1
6
63
/
6
4
2
63
/
6
4
7
/
1
6
3
/
3
2
1
/4
1
/4
B
usba
r
C
Stab
B
ase
B
usba
r
A
4
5
4D
509G04
4
5
4D
509G04
B
usba
r
C
4
5
4D
509G05
C
L
C
C
C
C
L
L
C
C
C
C
C
C
L
L
C
C
CC
C
C
L
L
C
C
C
C
C
C
L
L
C
C
C
C
C
C
C
C
C
C
L
C
C
1-27
/
3
2
1-27
/
3
2
2
63
/
6
4
7
/
1
6
7
/
1
6
1
/4
1
/4
15/3
2
3-1
/
6
4
1
1/
4
5/3
2
9
/
1
6
3
/8
15
/
3
2
15
/
6
4
3
/
3
2
1
/2
7/1
6
1
/
3
2
4
5
4D
509G04
7
/
1
6
B
usba
r B
a
n
d
Stab
B
ase
B
usba
r A
63
/
6
4
S
tab
B
ase
M
t
g
.
C
ri
t
i
ca
l
Dim
e
n
s
i
o
n
s
o
f
Stabs
a
n
d
Mtg. Cli
p
5
/
64 Th
k
.
S
teel
1
1
1
1
1
.1
90
-
3
2 Thr
ead
6-1
/4
7
3
/8
3
/8
63
/
6
4
1-31
/
3
2
27/64 Diameter 2 Counter Bores 1/4 Dee
p
C
C
L
C
C
13
/
64 Diamete
r
2 H
o
l
es
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 11
Bus Bar Drilling for
dc and Single-Phase Panels
(1/4 x 1 Copper Bus not Supplied)
Bus Bar Drilling for
3-Phase Panels
For Two Breakers per Load
Circuit (1/4 x 1 Copper Bus not
Supplied)
FRONT VIEW
1-9
/
3
2
C
L
CC
C
C
L
C
C
CC
C
C
L
C
C
C
C
C
C
L
L
C
C
C
C
1-9
/
3
2
B
usba
r
C
B
usba
r
A
4
5
4D
509G04
454D509G04
4
.1
90
-
3
2T
a
pp
e
d
H
o
l
es
Stab
B
ase
Mt
g
. Scre
w
s
2
2
2
2
1
/2
1
/4
1
/
3
2
7
/8
1-11
/
1
6
1-27
/
6
4
2
2
1
1
/2
35
/
6
4
1-9
/
3
2
B
usba
r
C
C
L
C
C
B
usba
r
B
B
usba
r
A
C
L
C
C
C
C
L
L
C
C
C
C
C
C
L
C
C
C
C
C
C
L
C
C
C
C
1-9
/
3
2
1-27
/
3
2
1-27
/
3
2
1-15
/
6
4
3-27
/
6
4
2
4
4
63
/
6
4
1-1
/2
2
35
/
6
4
2
4-1
/2
Stab
B
ase
Mt
g
. Scre
w
4
1-1
/2
4-1
/2
4
2
2
.1
90
-
3
2T
a
pp
ed Hole
s
1
/4
1
/2
1
/2
1
12 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ALB-1
and NLB-1
Outline Dimensions ALB-1
Breaker and Mounting Bases
— Dimensions in Inches,
Continued
Application in dc and
Single-Phase Panels
(Two Separate Bases shown.
Basic Pattern is One Molded
Base Accommodating Four
Single-Pole Breakers)
3-Phase Panel Application
for Two Breakers Per
Load Circuit
(Basic Pattern of Three Separate
Molded Bases can be Repeated
for Longer Panel Boards)
Outline Dimensions
for Mounting Bases
454D509G05 or
454D509G08
FRONT VIEW
SIDE VIEW
SIDE VIEW
C
L
C
C
C
L
C
C
C
L
L
C
C
7
/
1
6
7
/
1
6
7
/
1
6
4
63
/
6
4
63/64
63/6
7
/
1
6
1
/4
1
/4
1
/4
4
5
4D
509G08
C
C
L
L
L
C
C
CC
C
L
L
C
C
1
/4
1
1
/
3
2
7
/
1
6
6
7
/
1
6
2
3/32
/3
B
usba
r
C
Stab
B
ase
B
usba
r
A
1
Stab
B
ase
Sc
r
ew
C
C
L
L
C
C
C
C
B
usba
r
C
1-27
/
3
2
B
usba
r B
a
n
d
Stab
B
ase
Busbar A
B
4
5
4D
509G05
4
5
4D
509G05
C
L
CC
C
L
CC
C
L
C
C
454D509G0
8
C
C
C
L
L
L
C
C
C
C
C
C
2
2
1
1
1
1
4
63
/
6
4
7
/
1
6
1/32
2
1/32
6
6
7
/
1
6
7
/
1
6
1/4
1/4
7
/
1
6
5
/
3
2
2
2
2
2
3
/
3
2
1
/2
7
/
1
6
13/32
/
2
13
/
6
4
63
/
6
4
15
/
3
2
9
/
1
6
1
/4
3
/8
7
/
1
6
3-1
/
6
4
15
/
3
2
5
/
64 Thick Stee
l
.1
90
-
3
2 Th
d.
Critical Dims of Stabs and Mtg Clips
C
L
C
C
H
a
n
d
l
e
Piv
ot
C
L
C
C
1-15
/
3
2
3-5
/
1
6
1-15
/
3
2
9
/
1
6
1
/4
2-7
/8
5
/
6
4
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 13
Bus Bar Drilling for dc and
Single-Phase Panels
(1/4 x 1 Copper Bus not Supplied)
Bus Bar Drilling for
3-Phase Panels
For Two Breakers per Load
Circuit (1/4 x 1 Copper Bus not
Supplied)
Outline Dimensions
for Mounting Bases
454D509G05 or
454D509G08
C
L
CC
C
L
CC
C
L
C
C
63
/
6
4
Busbar C Busbar A 4
5
4D
509G08
4
5
4D
509G08
.1
90
-
32
Tapped Hole
s
Stab
B
ase
a
n
d
Mt
g
. Scre
w
2
2
1
/2
1
/4
1
/
3
2
7
/8
3-11
/
1
6
1-9
/
3
2
1-27
/
6
4
2
2
1
/2
35
/
6
4
1-9
/
3
2
2
1
C
L
CC
.1
90
-
3
2
Ta
pp
ed Hole
s
1-9
/
3
2
1-27
/
3
2
Stab
B
ase
a
n
d
Mountin
g
Scre
w
1-9
/
3
2
1-27
/
3
2
63
/
6
4
2
2
1
/
3
2
1/32
1
4
4
4
2-35
/
6
4
8
2-7
/8
3-1
/2
8
2-7
/8
1
1
-15
/
6
4
8
3-1
/8
4
5
4D
509G05
35
/
6
4
2-7
/8
3-1
/8
2-1
/2
3-1
/2
2-1
/
2
3-1
/8
2-7
/8
3-1
/8
1
/2
1
4
5
4D
509G08
4
5
4D
509G05
1
/2
1
/4
A
B
usba
r
A
B
usbar
B
B
B
usbar
C
C
6-1
/4
7
3
/8
3
/8
63
/
6
4
1-31
/
3
2
27/64 Diameter 2 Counter Bores 1/4 Dee
p
C
C
L
C
C
13
/
64 Diamete
r
2 H
o
l
es
14 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ALB-1
and NLB-1
Outline Dimensions ALB-1
Breaker and Mounting Bases
— Dimensions in Inches,
Continued
3-Phase Panel Application
(For One or Three Breakers per
Load Circuit)
Outline Dimensions
for Mounting Base
454D509G06
Outline Dimensions
for Mounting Bases
454D509G04, 454D509G05,
454D509G06, 454D509G08
SIDE VIEW
C
L
C
C
B
Busba
r
C
Stab
B
ase
a
n
d
B
usba
r
B
B
usba
r A
4
5
4D
509G06
C
L
C
C
C
L
C
C
C
L
C
C
C
C
L
L
C
C
C
4
5
4D
509G06
1-27
/
3
2
1-27
/
3
2
15
/
1
6
15
/
1
6
1-31/6
4
15
/
1
6
3
15
/
1
6
1
/4
1-31
/
6
4
1
/4
6-1
/4
7
3
/8
3
/
8
2-31
/
3
2
1-31
/
6
4
27/64 Diameter 2 Counter Bores 1/4 Dee
p
C
C
L
L
CC
CC
13
/
64 Diameter
2 H
o
l
es
C
L
C
C
H
a
n
d
l
e
Piv
ot
C
L
C
C
H
a
n
d
l
e
Piv
ot
1-15
/
3
2
3-5
/
1
6
1-15
/
3
2
9
/
1
6
1
/4
2-7
/8
5
/
6
4
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 15
Bus Bar Drilling for
3-Phase Panel Application
For One or Three Breakers per
Load Circuit (1/4 x 1 Copper Bus
not Supplied)
Front Panel Cutout
FRONT VIEW
.190-32
Ta
pp
ed Hole
s
Stab
B
ase
a
n
d
Mountin
g
Screw
s
4
5
4D
509G06
4
5
4D
509G06
B
usba
r
A
B
usba
r B
Busbar C
C
L
CC
C
L
C
C
C
L
C
C
1-31
/
6
4
3
3
3
3
3
3
3
3
3
3
4
2-27/6
4
4
1-47
/
6
4
4
35
/
6
4
1-9
/
3
2
1-27/3
2
1-27/3
2
1
/2
1
/2
1/4
4
1
29
/
3
2
1-15
/
16
C
L
C
C
2-29
/
3
2
C
L
C
C
C
L
C
C
C
L
C
C
1-5
/8
31
/
3
2
29
/
6
4
1
/2
29
/
6
4
1-29
/
3
2
F
o
r
O
n
e
3
-P
o
l
e
C
ir
cu
i
t
For One Sin
g
le-Pole Circui
t
Br
ea
k
er
Br
ea
k
e
r
Cutout
Br
ea
k
e
r
Cutout
Stab
B
ase
L
oad
En
d
L
oad
En
d
Stab
B
ase
F
o
r
O
n
e
2-P
o
l
e
C
ir
cu
i
t
5/16 Diameter Me
gg
e
r
Holes if Re
q
uire
d
31
/
3
2
1-15
/
1
6
1-21
/
3
2
1-5
/8
29
/
6
4
1
1
C
L
C
C
16 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ALB-1
and NLB-1
Characteristic Time-Current
Curve ALB-1 Breaker
MIL-C-17588
This specification includes the
ALB-1 type circuit breaker. It
requires that this breaker carry
115% of current ratings for more
than one hour and that the pri-
mary elements initiate tripping at
138% rated current within one
hour and at 200% in 10 to 100
seconds. A tripping characteristic
of the primary element is based
on the current flowing through all
poles in series and in an ambient
of 50°C The minimum instanta-
neous trip setting shall be 320
amperes or 20 times the element
rating, whichever is less, and trip
at not less than 0.5 cycles. At
800 amperes, the breaker must
trip at 0.400 second or less.
Characteristic
Temperature-Rating Curve
Wiring Diagram
12
34
56
7
8
91
02
03
05
07
09
0
100
2
00
1
300
500
1
0
.
6
0
.
4
0
.
2
1
0
4
2
1
4
0
2
0
1
0
4
2
4
0
2
0
1
1
0
4
2
4
0
2
0
1
4
2
Tim
es
R
ated
Cu
rr
e
n
t
T
ime Tri
p
–
C
old Start, C
y
cles
Seco
n
ds
M
in
utes
Hou
r
s
C
h
a
r
acte
ri
st
i
c
Tim
e
-
Cu
rr
e
n
t
Cu
rv
e
C
h
a
r
acte
ri
st
i
c
T
i
m
e
-
Cu
rr
e
n
t
Cu
rv
e
Instantaneous Trippin
g
Occurs 320 Amperes
or 20 Times Element Ratin
g
Whichever
is Less. . . . . . .More Than 0.5 Cycles
800 Am
p
eres Less Than .400 Seconds
Minim
um
M
a
xim
um
12
5
12
0
11
5
11
0
10
5
1
00
95
90
85
80
7
5
7
0
7
0
60
50
4
0
30
2
0
1
0
0
1
00
80
90
Am
b
i
e
n
t
T
e
°
C
P
ercent Normal Ratin
g
Lin
e
Lin
e
L
oad
L
oad
T
ype ALB-
T
T
1T
ype NLB-
T
T
1
Stationar
y
Co
nn
ect
i
on
Dr
a
w-
Ou
t
Co
nn
ect
i
on
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 17
Types AQB-A50,
NQB-A50
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A50,
NQB-A50 Breakers
500 Vac, 50 Amperes Maximum,
5000 Amperes I.C.
Specification: MIL-C-17361
●10 – 50 amperes, 60 and
400 cycle.
●500 volts ac.
●3-pole.
Interrupting Rating
●5,000 amperes ac.
●Non-interchangeable trip unit.
●Class Hi-Shock MIL-S-901,
50°C ambient.
The AQB-A50 is a factory cali-
brated non-adjustable thermal-
magnetic circuit breaker. The
circuit breaker is assembled as
a 3-pole device with circuit pro-
tecting trip elements in the two
outside poles. The unit can be
installed in 2-pole applications by
connecting the 2-wire circuit to
the outside protected poles.
The NQB-A50 breaker is a non-
automatic design of the AQB-A50.
Since the tripping elements are
omitted, it is used as a manual
disconnect. The NQB-A50 has a
maximum continuous current
rating of 50 amperes.
Drawings Available
1244C62 – Master drawing for
breaker and mounting bases.
AQB-A50 AND NQB-A50 CIRCUIT BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Complete breaker does not include
mounting bases. Type required
must be ordered separately.
Mounting bases include cable lugs.
Only 3-pole breakers furnished;
for 2-pole application make
connections to outside poles.
Refer to Eaton for dc Part
Numbers and Information.
Note:
These breakers are non-repair-
able per NAVSEA letter, serial
number 9077 Ser 03/03 EI-48,
paragraph 3 Policy, sub-para-
graph 2, dated 25 October 1994.
TYPE TRIP UNIT RATING STYLE NUMBER NATIONAL STOCK NUMBER
60 Cycles
AQB-A50 10 1244C52G01 5925-01-188-4302
AQB-A50 15 1244C52G02 5925-01-188-6298
AQB-A50 20 1244C52G03 5925-00-799-5669
AQB-A50 25 1244C52G04 5925-00-797-9693
AQB-A50 30 1244C52G05 5925-01-225-1962
AQB-A50 35 1244C52G06 5925-01-251-3455
AQB-A50 40 1244C52G07 5925-01-234-7187
AQB-A50 50 1244C52G08 5925-01-331-8636
400 Cycles
AQB-A50 10H 1244C52G09 5925-01-242-7456
AQB-A50 15H 1244C52G10 5925-01-240-9180
AQB-A50 20H 1244C52G11 5925-01-246-0471
AQB-A50 25H 1244C52G12 5925-01-234-6910
AQB-A50 30H 1244C52G13 5925-00-199-9518
AQB-A50 35H 1244C52G14 5925-01-234-6911
AQB-A50 40H 1244C52G15 5925-00-817-7860
AQB-A50 50H 1244C52G16 5925-01-234-6912
NQB-A50 Non-Automatic 1244C52G25 5925-00-948-3296
18 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A50,
NQB-A50
PANELBOARD MOUNTING AND ACCESSORIES
AQB-A50 SINGLE MOUNTING
BASE — FRONT CONNECTED
AQB-A50 SINGLE MOUNTING
BASE — REAR CONNECTED
SINGLE BASE LINE STABS REAR
CONNECTED — LOAD STABS
FRONT CONNECTED
HANDLE LOCK DOUBLE MOUNTING BASE —
FRONT CONNECTED
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Single Base — Line and Load Stabs, Front Connected 1244C44G01 5925-00-270-4004
Single Base — Line and Load Stabs, Rear Connected 1244C44G02 5925-00-270-4005
Single Base — Line Rear, Load Front Connected 1244C44G03 5925-00-270-4006
Double Base Assembly — Line, Bus Connected; Load, Front Connected 1244C45G01 5925-01-246-0569
Handle Lock 5080A95G01 —
Handle Boot 752B729H01 5340-01-091-9432
Technical Manual 1244C59H01 —
NET WEIGHT
For ordering information,
see Page 5.
DESCRIPTION
NET
WEIGHT,
LBS. (KG)
AQB-A50 Breaker 2.3 (1.0)
NQB-A50 Breaker 1.9 (0.9)
Single Mounting Base 0.7 (0.3)
Double Mounting Base 1.5 (0.7)
Handle Lock .03 (0.01)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 19
Outline Dimensions AQB-
A50 and NQB-A50 Breakers
— Dimensions in Inches
Front Panel Cutout
Wiring Diagram
FRONT VIEW SIDE VIEW
13
/
6
4
2-15
/
1
6
1
1
-13
/
1
6
1
4-1/
8
3
1-3
/4
5
/8
ON
O
N
OF
FO
FF
59
/
6
4
1-1
/
2
2
3-11
/
3
2
Breaker Mountin
g
Hole
s
Tw
o #12-24 Mountin
g
Scre
w
s
4 1/8 Lon
g
Supplied With Breake
r
Inserts in Cover
(
2
)
#
12-24 Thds
.
C
L
C
C
o
f
Cli
p
C
L
C
C
of Cli
p
L
oad
E
n
d
17
/
3
2
2-3
/
3
2
2-5
/8
On
T
ri
p
Of
f
R
eset
3
/
32
Di
a.
H
o
l
e
7
/8
4-1
/8
3-1
/2
3-3
/8
2-5
/
1
6
9
/
1
6
3-1
/8
1
/2
55
/
6
4
1-5
/8
1-3
/4
1
/
4
R
1
/
4
2-1
/
1
6
2-13
/
1
6
1-1
/8
1
/4
3-3
/8
5
/
1
6
L
oad
S
i
de
1-15
/
3
2
Diameter for Insulation T
est
T
T
Out
lin
e
o
f
C
ir
cu
i
t
Br
ea
k
e
r i
s
Indicated b
y
Broken Li
n
e
1-1
/8
1-1
/8
1-1
/8
1-1
/8
1-15
/
3
2
Lin
e
Lin
e
L
oad
T
yp
e NQB-A5
0
T
yp
e AQB-A5
0
L
oad
20 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A50,
NQB-A50
Outline Dimensions Single
Base Units — Dimensions
in Inches
Line and Load Stabs
Front Connected
Line and Load Stabs
Back Connected
Line Stabs Back
Connected, Load Sides
Front Connected
1-15
/
3
2
1-17
/
3
2
1-13
/
1
6
C
L
C
C
3
/8
1
/2
1-7
/
1
6
2-5
/8
1
0
-
32
Th
ds.
31
/
6
4
5-7
/8
Wir
e
Co
nn
ect
i
o
n
M
t
g
Holes
(
2
)
L
oad
1
/2
1
/4
Li
n
e
2-15
/
1
6
C
L
L
C
C
C
29
/
6
4
Ci
r.
B
k
r.
1
1-1
/8
1-1
/8
3-11
/
3
2
C
L
CC
3
/8
1
/2
1-9
/
6
4
2-5
/8
1-21
/
6
4
1
0
-
32
Th
ds.
Wir
e
Co
nn
ect
i
o
n
M
t
g
L
oad
1
/2
1
/4
1-17
/
3
2
Lin
e
2-15
/
1
6
1-15
/
3
2
C
L
L
CC
C
29
/
6
4
r.
B
k
r.
1
1-1
/8
1-1
/8
3-11
/
3
2
5-3
/
3
2
1-1
/
1
6
C
L
CC
3
/8
1
/2
1-9
/
6
4
2-5
/8
1-13
/
1
6
1
0
-
32
Th
ds.
5-37
/
6
4
Wir
e
Co
nn
ect
i
on
M
t
g
H
o
l
es
(
2
)
L
oad
1/2
1
/4
1
-17
/
32
Lin
e
2-15
/
1
6
1-15
/
3
2
C
L
L
CC
C
29
/
6
4
r.
Bk
r.
1
1-1
/8
1-1
/8
3-11
/
3
2
1-1
/
1
6
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 21
Outline Dimensions
Double Base Assembly —
Panelboard — Dimensions
in Inches
LINE BUS CONNECTED, LOAD FRONT CONNECTED
C
L
of Base
Line Load
of Circuit
Breakers
1
1/2
29/64
1-1/8
1-1/8
2-15/16
1-15/32
Load Mounting
Holes (4)
1/2 1/4 1/4
Line 1/2
1-29/32 1-29/321-9/16
C
L
3-11/32
Wire
Connectors
#10-32
Thread
#10-32
Thread
11-3/16
2-5/16
#10-32
Thds. 1-17/32
2-5/8
3/8
13/32
1-17/32
2-5/8
1-13/16 1-13/16
13/32
1/2
22 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A50,
NQB-A50
Characteristic Time-Current
Curve Navy Type AQB-A50
Circuit Breaker
Time-Current Curves for
AQB-A50 Circuit Breaker
(60 Hz and 400 Hz — 10, 15,
20, 25, 30, 35, 40 and 50
Ampere Ratings)
2 H
ou
r
s
1
H
ou
r
10
,
00
0
5,00
0
3
,
00
0
2
,
00
0
1
,
00
0
500
300
2
00
1
00
50
3
0
2
0
1
0
5
3
2
1
.
5
.
3
.2
.1
.
05
.
03
.
02
0
.
01
.
005
.
003
.
002
.
001
Ti
me
in
Seco
n
ds
10
,
00
0
5,00
0
3
,
00
0
2
,
00
0
1
,
00
0
500
300
2
00
1
00
50
3
0
2
0
1
0
5
3
2
1
.
5
.
3
.2
.1
.
05
.
03
.
02
0
.
01
.
005
.
003
.
002
.
001
2 Hou
r
s
1
H
ou
r
1
Min
ute
1
Mi
nut
e
1
00
,
000
5
0
,
000
4
0
,
000
30,000
2
0
,
000
1
0
,
000
5,
000
4,
000
3
,
000
2,
000
1,
000
500
400
300
200
100
50
1
00
,
000
5
0
,
000
4
0
,
000
30,000
2
0
,
000
1
0
,
000
5,
000
4,
000
3
,
000
2,
000
1,
000
500
400
300
200
100
50
Maximum T
rip
T
T
Ti
m
e
Minimum T
rip
T
T
Ti
m
e
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 23
Types AQB-A51,
NQB-A51
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A51,
NQB-A51 Breakers
500 Vac, 50 Amperes Maximum,
5000 Amperes I.C.
Specification: MIL-C-17361
●10 – 50 amperes, 60 cycles.
●500 volts ac.
●3-pole.
Interrupting Rating
●5,000 amperes I.C.
●Non-Interchangeable trip unit.
●Class Hi-Shock MIL-S-901,
50°C ambient.
The Type AQB-A51 molded
case circuit breaker is a 500 Vac
maximum rated device with 50
ampere maximum continuous
current at 60 Hz. The AQB-A51 is
a form, fit and function replace-
ment for the AQB-A50 circuit
breaker with enhanced overcur-
rent protection features. In the
AQB-A51, overcurrent protec-
tion is provided in all three poles.
This not only makes the breaker
suitable for use in “grounded”
three-phase systems, but offers
enhanced performance of the
instantaneous trip feature when
used in ungrounded systems. In
three phase distribution systems
with either a solidly or “effec-
tively” grounded neutral, fault
currents can occur that will be
evident in only one pole, so pro-
tection is needed in all three
poles. The enhanced instanta-
neous trip feature is valuable in
the selective coordination of the
AQB-A51 with upstream AQB
breakers. The AQB-A51 circuit
breaker has an interruption rating
of 5000 amperes asymmetric.
The NQB-A51 breaker is a non-
automatic design of the AQB-A51.
Since the tripping elements are
omitted, it is used as a manual
disconnect. The NQB-A51 has a
maximum continuous current
rating of 50 amperes.
AQB-A51 AND NQB-A51 CIRCUIT BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Complete breaker does not include
mounting bases. Type required
must be ordered separately.
Mounting bases include cable lugs.
Note:
These breakers are non-repair-
able per NAVSEA letter, serial
number 9077 Ser 03/03 EI-48,
paragraph 3 Policy, sub-para-
graph 2, dated 25 October 1994.
TYPE TRIP UNIT RATING STYLE NUMBER NATIONAL STOCK NUMBER
60 Cycles
AQB-A51 10 1244C56G01 5925-01-511-0205
AQB-A51 15 1244C56G02 5925-01-458-3739
AQB-A51 20 1244C56G03 5925-01-461-1628
AQB-A51 25 1244C56G04 5925-01-511-0208
AQB-A51 30 1244C56G05 5925-01-511-1210
AQB-A51 35 1244C56G06 5925-01-511-0214
AQB-A51 40 1244C56G07 5925-01-511-0217
AQB-A51 50 1244C56G08 5925-01-511-0220
NQB-A51 Non-Automatic 1244C56G25 —
24 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A51,
NQB-A51
PANELBOARD MOUNTING AND ACCESSORIES
AQB-A51 SINGLE MOUNTING
BASE — FRONT CONNECTED
AQB-A51 SINGLE MOUNTING
BASE — REAR CONNECTED
SINGLE BASE LINE STABS REAR
CONNECTED — LOAD STABS
FRONT CONNECTED
HANDLE LOCK DOUBLE MOUNTING BASE —
FRONT CONNECTED
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Single Base — Line and Load Stabs, Front Connected 1244C44G01 5925-00-270-4004
Single Base — Line and Load Stabs, Rear Connected 1244C44G02 5925-00-270-4005
Single Base — Line Rear, Load Front Connected 1244C44G03 5925-00-270-4006
Double Base Assembly — Line, Bus Connected; Load, Front Connected 1244C45G01 5925-01-246-0569
Handle Lock 5080A95G01 —
Handle Boot 752B729H01 5340-01-091-9432
Technical Manual 1244C59H01 —
NET WEIGHT
For ordering information,
see Page 5.
DESCRIPTION
NET
WEIGHT,
LBS. (KG)
AQB-A51 Breaker 2.4 (1.1)
NQB-A51 Breaker 1.9 (0.9)
Single Mounting Base 0.7 (0.3)
Double Mounting Base 1.5 (0.7)
Handle Lock .03 (0.01)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 25
Outline Dimensions AQB-
A51 and NQB-A51 Breakers
— Dimensions in Inches
Front Panel Cutout
Wiring Diagram
FRONT VIEW SIDE VIEW
13
/
6
4
2-15
/
1
6
1
1
-13
/
1
6
1
4-1/
8
3
1-3
/4
5
/8
ON
O
N
OF
FO
FF
59
/
6
4
1-1
/
2
2
3-11
/
3
2
Breaker Mountin
g
Hole
s
Tw
o #12-24 Mountin
g
Scre
w
s
4 1/8 Lon
g
Supplied With Breake
r
Inserts in Cover
(
2
)
#
12-24 Thds
.
C
L
C
C
o
f
Cli
p
C
L
C
C
of Cli
p
L
oad
E
n
d
17
/
3
2
2-3
/
3
2
2-5
/8
On
T
ri
p
Of
f
R
eset
3
/
32
Di
a.
H
o
l
e
7
/8
4-1
/8
3-1
/2
3-3
/8
2-5
/
1
6
9
/
1
6
3-1
/8
1
/2
55/6
4
1-5
/8
1-3
/4
1
/
4
R
1
/
4
2-1
/
1
6
2-13
/
1
6
1-1
/8
1
/4
3-3
/8
5
/
1
6
L
oad
S
i
de
1-15
/
3
2
Diameter for Insulation T
est
T
T
Out
lin
e
o
f
C
ir
cu
i
t
Br
ea
k
e
r i
s
Indicated b
y
Broken Li
n
e
1-1
/8
1-1
/8
1-1
/8
1-1
/8
1-15
/
3
2
Line Line
Load
Type NQB-A51 Type AQB-A51
Load
26 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A51,
NQB-A51
Outline Dimensions Single
Base Units — Dimensions
in Inches
Line and Load Stabs
Front Connected
Line and Load Stabs
Back Connected
Line Stabs Back
Connected, Load Sides
Front Connected
1-15
/
3
2
1-17
/
3
2
1-13
/
1
6
C
L
C
C
3
/8
1
/2
1-7
/
1
6
2-5
/8
1
0
-
32
Th
ds.
31
/
6
4
5-7
/8
Wir
e
Co
nn
ect
i
o
n
M
t
g
Holes
(
2
)
L
oad
1
/2
1
/4
Li
n
e
2-15
/
1
6
C
L
L
C
C
C
29
/
6
4
Ci
r.
B
k
r.
1
1-1
/8
1-1
/8
3-11
/
3
2
C
L
C
C
3
/8
1
/2
1-9
/
6
4
2-5
/8
1-21
/
6
4
1
0
-
32
Th
ds.
Wir
e
Co
nn
ect
i
o
n
M
t
g
L
oad
1
/2
1
/4
1-17
/
3
2
Lin
e
2-15
/
1
6
1-15
/
3
2
C
L
L
CC
C
29
/
6
4
r.
B
k
r.
1
1-1
/8
1-1
/8
3-11
/
3
2
5-3
/
3
2
1-1
/
1
6
C
L
CC
3
/8
1
/2
1-9
/
6
4
2-5
/8
1-13
/
1
6
1
0
-
32
Th
ds.
5-37
/
6
4
Wir
e
Co
nn
ect
i
on
M
t
g
H
o
l
es
(
2
)
L
oad
1/2
1
/4
1
-17
/
32
Lin
e
2-15
/
1
6
1-15
/
3
2
C
L
L
CC
C
29
/
6
4
r.
Bk
r.
1
1-1
/8
1-1
/8
3-11
/
3
2
1-1
/
1
6
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 27
Outline Dimensions Double
Base Assembly — Panelboard
— Dimensions in Inches
LINE BUS CONNECTED, LOAD FRONT CONNECTED
C
L
of Base
Line Load
of Circuit
Breakers
1
1/2
29/64
1-1/8
1-1/8
2-15/16
1-15/32
Load Mounting
Holes (4)
1/2 1/4 1/4
Line 1/2
1-29/32 1-29/321-9/16
C
L
3-11/32
Wire
Connectors
#10-32
Thread
#10-32
Thread
11-3/16
2-5/16
#10-32
Thds. 1-17/32
2-5/8
3/8
13/32
1-17/32
2-5/8
1-13/16 1-13/16
13/32
1/2
28 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A51,
NQB-A51
Characteristic Time-Current
Curve Navy Type AQB-A51
Circuit Breaker
Time-Current Curves for
AQB-A51 Circuit Breaker
(60 Hz)
Note: Line to Ground fault is single-phase. Line to Line fault is three-phase.
2 H
ou
r
s
1
H
ou
r
10
,
00
0
5,00
0
3
,
00
0
2
,
00
0
1
,
00
0
500
300
2
00
1
00
50
3
0
2
0
1
0
5
3
2
1
.
5
.
3
.2
.1
.
05
.
03
.
02
.
01
.
005
.
003
.
002
.
001
Ti
me
in
Seco
n
ds
10
,
00
0
5,00
0
3
,
00
0
2
,
00
0
1
,
00
0
500
300
2
00
1
00
50
3
0
2
0
1
0
5
3
2
1
.
5
.
3
.2
.1
.
05
.
03
.
02
.
01
.
005
.
003
.
002
.
001
2 Hou
r
s
1
H
ou
r
1
Min
ute
1
Mi
nut
e
1
00
,
000
5
0
,
000
4
0
,
000
30,000
2
0
,
000
1
0
,
000
5,
000
4,
000
3
,
000
2,
000
1,
000
500
400
300
200
100
50
1
00
,
000
5
0
,
000
4
0
,
000
30,000
2
0
,
000
1
0
,
000
5,
000
4,
000
3
,
000
2,
000
1,
000
500
400
300
200
100
50
Maximum T
rip
T
T
Ti
m
e
Minimum T
rip
p
T
T
Ti
m
e
Li
n
e
G
r
ou
n
d
F
au
l
t
Li
n
e
Li
n
e
Fault
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 29
Types AQB-A100,
NQB-A100
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A100,
NQB-A100 Breakers
250 Volts dc, 500 Volts ac,
100 Amperes Maximum,
15,000 Amperes ac, 10,000
Amperes dc I.C.
Note:
AQB-A100 and NQB-A100 break-
ers are sold for replacement
only. They are no longer on the
Navy Qualified Product List.
AQB-A100
Specification: MIL-C-17361
●15 – 100 amperes.
●500 volts ac and 250 volts dc.
●2- or 3-pole.
Interrupting Rating
●15,000 amperes ac and
10,000 amperes dc.
AQB-A100 circuit breakers are
designed for use in lighting and
distribution panelboards and
switchboards for the protection
of feeder and motor branch
circuits.
Trip units with current ratings of
15, 25, 50, 75 and 100 can be
quickly interchanged and a con-
version kit is available to change
a 3-pole, 500 volt AQB-A100 to a
nonautomatic NQB-A100 circuit
interrupter. NQB-A100 breakers
have a maximum continuous
current rating of 100 amperes,
but they are used only as discon-
nects since there is no automatic
opening device.
Those breakers (and interrupters)
designed for dc motor circuits
and for ac feeder circuits (desig-
nated with a “BF” in amp rating
column of price table) have fixed
instantaneous settings of 600%
– 700% continuous current rat-
ings. Those having a magnetic
element set to trip at 1200% –
1400% are applied on ac motor
circuits (designated with a “B”).
Breakers designated with “BE”
are calibrated for dc application.
AQB-A100 AND NQB-A100 CIRCUIT BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Styles listed include slip-type
connectors for rear connections.
Order front terminal connectors
separately if required. No addi-
tional charges for front connectors
ordered with breakers or frames.
Type NQB-A100 non-automatic.
To convert 3-pole AQB breaker,
order style 1764 668 only. Note:
Breakers with ratings other than
those given on this page are con-
sidered special and full descrip-
tion data must be provided.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS
TRIP SETTING IN
AMPERES
COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY
STYLE
NUMBER
NATIONAL
STOCK NUMBER
STYLE
NUMBER
NATIONAL
STOCK NUMBER
STYLE
NUMBER
NATIONAL
STOCK NUMBERLOW HIGH
2-Pole, 250 Volts dc
15-BE 90 105 1764 676 —1764 638 —1764 640 —
25-BE 150 175 1764 677 5925-01-221-1765 1764 638 —1764 641 5925-00-248-1104
50-BE 300 350 1764 678 —1764 638 —1764 642 —
75-BE 450 525 1764 679 —1764 638 —1764 643 5925-00-248-1108
100-BE 600 700 1764 680 —1764 638 —1764 644 —
2-Pole, 500 Volts ac
15-BF 90 105 1764 681 —1764 638 —1764 645 —
15-B 180 210 1764 682 5925-00-396-2283 1764 638 —1764 646 5925-00-629-0975
25-BF 150 175 1764 683 —1764 638 —1764 647 —
25-B 300 350 1764 684 —1764 638 —1764 648 5925-00-628-0695
50-B 600 700 1764 685 —1764 638 —1764 649 5925-00-248-1078
75-B 900 1050 1764 686 —1764 638 —1764 650 5925-00-248-1082
100-B 1200 1400 1764 687 —1764 638 —1764 651 —
100 Non-Automatic 1764 688 5925-00-699-1111 1764 638 —1764 652 5925-00-772-0646
3-Pole, 250 Volts dc
15-BE 90 105 1764 689 —1764 639 5925-00-258-2945 1764 653 5925-00-608-0972
25-BE 150 175 1764 690 5925-00-399-8120 1764 639 5925-00-258-2945 1764 654 5925-00-553-9745
50-BE 300 350 1764 691 —1764 639 5925-00-258-2945 1764 655 5925-00-383-3814
75-BE 450 525 1764 692 —1764 639 5925-00-258-2945 1764 656 5925-00-248-1371
100-BE 600 700 1764 693 5925-00-399-8127 1764 639 5925-00-258-2945 1764 657 5925-00-608-0973
30 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A100,
NQB-A100
AQB-A100 AND NQB-A100 CIRCUIT BREAKER PRODUCT SELECTION, CONTINUED
For list prices, see Price and
Availability Digest (PAD).
Note:
Breakers with ratings other than
those given on this page are con-
sidered special and full descrip-
tion data must be provided.
Styles listed include slip-type
connectors for rear connections.
Order front terminal connectors
separately if required. No addi-
tional charges for front connectors
ordered with breakers or frames.
Type NQB-A100 non-automatic.
To convert 3-pole AQB breaker,
order style 1764 668 only.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS
TRIP SETTING IN
AMPERES
COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY
STYLE
NUMBER
NATIONAL
STOCK NUMBER
STYLE
NUMBER
NATIONAL
STOCK NUMBER
STYLE
NUMBER
NATIONAL
STOCK NUMBERLOW HIGH
3-Pole, 500 Volts ac
15-BF 90 105 1764 694 5925-00-113-5066 1764 639 5925-00-258-2945 1764 658 5925-00-502-6719
15-B 180 210 1764 695 —1764 639 5925-00-258-2945 1764 659 5925-00-248-1453
25-BF 150 175 1764 696 5925-00-658-9609 1764 639 5925-00-258-2945 1764 660 5925-00-215-3758
25-B 300 350 1764 697 5925-00-265-9474 1764 639 5925-00-258-2945 1764 661 5925-00-248-1449
50-BF 300 350 1764 698 5925-00-988-5474 1764 639 5925-00-258-2945 1764 662 5925-00-248-1442
50-B 600 700 1764 699 5925-00-396-2339 1764 639 5925-00-258-2945 1764 663 5925-00-248-1443
75-BF 450 525 1764 700 —1764 639 5925-00-258-2945 1764 664 5925-00-248-1436
75-B 900 1050 1764 701 5925-00-396-2345 1764 639 5925-00-258-2945 1764 665 5925-00-248-1437
100-BF 600 700 1764 702 5925-01-265-0190 1764 639 5925-00-258-2945 1764 666 5925-00-248-1429
100-B 1200 1400 1764 703 5925-00-450-6275 1764 639 5925-00-258-2945 1764 667 5925-00-248-1431
100 Non-Automatic 1764 704 5930-01-300-1107 1764 639 5925-00-258-2945 1764 668 5925-00-699-1111
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 31
Front Connected Breakers
For the load ends of panelboard
breakers and for other front
terminal applications, pressure
connectors should be ordered.
When breakers and the required
lugs are ordered simultaneously,
these lugs will be supplied with-
out charge.
Circular MILs area.
Switchboard Mounting
Complete breakers and frames
include mounting hardware.
Female slip connectors are
mounted in the breaker base for
plugging onto stud projections of
terminal mounting block assem-
blies. Order one mounting block
assembly for each end of the
breaker.
NET WEIGHT, TERMINAL MOUNTING SUPPORTS (SET OF TWO)
For ordering information,
see Page 5.
CABLE
RANGE
NAVY CABLE SIZE,
MAXIMUM DESCRIPTION
STYLE
NUMBER
NATIONAL
STOCK NUMBER
N3-N14 14,340 One Pressure Connector 1763 660 —
N23-N40 38,910 One Pressure Connector 1763 661 —
N50-N75 75,780 One Pressure Connector 1763 662 —
NUMBER
OF POLES DESCRIPTION
STYLE
NUMBER
NATIONAL
STOCK NUMBER
2 Mounting Block Assembly 1764 675 —
3 Mounting Block Assembly 1764 674 —
2 or 3 Mounting Block Only 1764 240 5940-00-643-7194
— One Stud Assembly — Complete with 4 Nuts 1631 442 5940-00-501-9120
MOUNTING BLOCK
ASSEMBLY
NET WEIGHT,
LBS. (KG) FRAME
NET WEIGHT,
LBS. (KG)
2-Pole 2.75 (1.2) 2-Pole AQB 7.38 (3.4)
2-Pole NQB 7.38 (3.4)
3-Pole 3.25 (1.5) 3-Pole AQB 7.88 (3.6)
3-Pole NQB 7.88 (3.6)
COMPLETE
BREAKER
NET WEIGHT,
LBS. (KG)
TRIP
UNIT
NET WEIGHT,
LBS. (KG)
2-Pole AQB 10.00 (4.5) 2-Pole AQB 2.63 (1.2)
2-Pole NQB 8.75 (4.0) 2-Pole NQB 1.38 (0.6)
3-Pole AQB 10.75 (4.9) 3-Pole AQB 2.88 (1.3)
3-Pole NQB 9.50 (4.3) 3-Pole NQB 1.63 (0.7)
Additions
Handle Lock
When specified, order style
1614 485. One furnished without
charge per every 10 breakers,
when requested.
NSN: 5930-00-669-7524
Fungus-Moisture Resistant
Treatments
(JAN-T-152, JAN-C-173 or
MIL-V-173) if specified, contact
Eaton. External parts are coated;
trip units are not treated.
Technical Manual Navships
362-0819- per MIL-M-15071
When required, specify
IB-29-062-CIA.
Individual Reproductions
When required, reproductions of
master drawings, outline draw-
ings and certification sheets can
be ordered as follows:
Drawings Available
Master drawing 1-JF-630; rear
connected breaker outline,
drilling and wiring diagram
20-B-2881; front connected
breaker outline, drilling and
wiring diagram 30-B-3837.
400 Cycle Breakers
Refer to Eaton.
ITEM DESCRIPTION
1 Full size photolithic tracing
of master drawing on vellum
2 Outline and drilling plan
on vellum
3 Certification data on vellum
4 Reproductions of Items 1, 2 or 3
32 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A100,
NQB-A100
Outline Dimensions
AQB-A100 and NQB-A100
Breakers — Dimensions
in Inches
Slip Contact Assembly
Drilling Plan
For Mounting Panel (Front View)
Front Cover Cutout
7/8
4-3
/4
1
/8
7/8
1-25
/
3
2
4-11
/
3
2
L
oad
En
d
15
/
1
6
2-27
/
32
R
1
/8
Min.
1-29
/
3
2
15
/
16
Lin
e
En
d
T
erminal Mfg. Block
TT
7
°
15-1
/2
°
7-1
/2
°
Of
f
f
f
3
/
8
–
16 Thd.
–
5
/
16
–
18 Thd.
–
T
e
rmin
a
l Bl
oc
k
s
are not Su
pp
lied
wi
t
h Br
ea
k
e
r
s
but
m
ust
be
O
r
de
r
ed
Se
p
aratel
y
(2 Re
q
uried Per
Breakers
)
Refer
to Dw
g
. 1-A-445
7
1
/
8
R
7
/
1
6
7/16
7
13
/
16
1-3
/8
5-1/
2
/
/
-7
/8
3-9
/
1
6
-1
/4
1-7
/8
6
4-9
/
1
6
4-3
/
1
6
8-3
/4
1
0
5/
8
/
/
V
isible Ampere Ratin
g
Interchan
g
eabl
e
Tri
p
Uni
t
1-5
/8
1-5
/8
5
2-1
/2
1-1
/4
3
/
1
6
4-1
/
1
6
2-3
/
1
6
1-3/16
/
3/
3/
1/2 D.ctbr
ct
ct
1-5
/8
2-21
/
6
4
4-21
/
3
2
F
o
r 2-P
o
l
e
Br
ea
k
e
r
Ce
n
te
r
P
o
l
e
Cu
rr
e
n
t
Carryin
g
Parts
a
r
e
O
mi
tted
Mountin
g
Bolts
a
n
d
W
as
h
e
r
s
(
Furnished with
Terminal Blocks
)
(
4
)
1
/
4
–
2
0
x
1-7
/
8 L.G.
S
l
otted
H
e
x
H
eads
B
o
l
ts
1
/
4
–
2
0
Th
d.
.
098
Di
a
. H
o
l
e
f
o
r H
a
n
d
l
e
L
oc
k
a
n
d
Warnin
g
Ta
g
5
/8
1-1
/
8 Min. Slo
t
Lin
e
En
d
9
/
16 Rad.
Min.
C
C
L
L
C
C
C
C
L
L
CC
CC
Studs
s
Studs
Studs
C
C
L
C
C
15
/
1
6
8-3
/4
L
oad
En
d
1-1/8 Min. Slot
1
-
1/8 Min. Sl
15/16
9
/
16 Rad.
Min.
7
/
16 Dia
.
4 H
o
l
es
5
2-1
/4
1-1
/2
3
6
1
0
5
/8
1-5
/8
1-5
/
8
Bkr. Fr
a
m
e
Out
lin
e
1/2 Dia. Megger Test
H
o
l
es
O
mi
t
Mi
dd
l
e
H
o
l
e
f
o
r 2-P
o
l
e
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 33
Characteristic Time-Current
Curves
AQB-A100 Breakers
Operating Characteristics
Trip Unit Rating 15 – 100 Amperes
50°C Ambient — Cold Start,
60 Cycle, ac or dc.
400 Cycle Breakers
Operating Characteristics
Trip Unit Rating 15 – 100 Amperes
50°C Ambient — Cold Start
400 Cycle ac.
Hou
r
s
M
in
utes
Seco
n
ds
Ti
me
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
0
1
5
0
100
200
300
400
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
In
sta
n
ta
n
eou
s
T
ri
p
at 1200% t
o
1400% Ratin
g
In
sta
n
ta
n
eou
s
T
ri
p
at 600% t
o
g
M
a
xim
um
Minim
um
Hou
r
s
Ti
m
e
,
Minutes
Seco
n
ds
30
4
3
2
1
50
4
0
2
0
1
0
4
3
2
1
5
30
4
0
2
0
1
0
1
5
4
3
2
1
5
0
0
0
100
200
300
400
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
Trip Unit Rating
To determine the trip unit rating
to be used, when the load
current and ambient are known,
multiply the load current by the
factor obtained from this curve
for the known ambient. The
result will be the ideal trip unit
rating. However, since trip units
are furnished only with standard
ratings as per Navy spec., select
the standard trip unit whose
rating is equal to or one rating
higher than the ideal rating.
Specification MIL-C-17361
This specification covers all
thermal-magnetic AQB breakers.
It requires that they carry 150%
of current ratings for at least one
hour and that thermal elements
initiate tripping at 225% rated
current within one hour and at
600% in 25 seconds plus or
minus 25%. The instantaneous
magnetic settings for each
continuous ratings are based on
intended applications. (Thermal
tripping tests are conducted with
all poles in series in 50°C ambient;
each pole is tested individually to
check magnetic settings.)
90
8
0
7
0
60
50
4
0
30
2
0
1
0
0
0
0
.
5
1.
0
1.
5
2.
0
2.
5
3
.
0
3
.
5
4.
0
4.
5
F
actor
34 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A101,
NQB-A101
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A101,
NQB-A101 Breakers
250 Volts dc, 500 Volts ac, 100
Amperes Maximum, 15,000
Amperes ac, 10,000 Amperes
dc I.C.
Specification: MIL-C-17361
●15 – 100 amperes.
●500 volts ac and 250 volts dc.
●3-pole.
Interrupting Rating
●15,000 amperes ac and
10,000 amperes dc.
●Non-Interchangeable Trip
Unit.
●Class: Hi Shock MIL-S-901:
50°C Ambient.
AQB-A101 circuit breakers are
designated for use in lighting and
distribution panelboards and for
switchboards in the protection of
feeder and motor branch circuits.
These breakers have adjustable
instantaneous trip settings of
“LO,” “Intermediate,” and “HI.”
The “LO” setting is 500% —
700% of continuous current rat-
ing. It is designed for dc motor
circuits and ac feeder circuits.
The “HI” setting is 1200% —
1400% of continuous current rat-
ing and is designed for applica-
tion on ac motor circuits. The
intermediate setting may be
used to increase LO setting trip
amperes or decrease HI setting
trip amperes as may be required.
NQB-A101 circuit breakers have
a maximum continuous current
rating of 100 amperes. They are
used only as disconnects, since
they do not include an automatic
opening device.
Generator Breakers
(Designated with a “G”) are also
available in other configurations.
Consult Eaton.
AQB-A101 AND NQB-A101 CIRCUIT BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Complete breaker does not include
mounting bases. Type required
must be ordered separately.
Note:
These breakers are non-repairable
per NAVSEA letter, serial number
9077 Ser 03/03 EI-48, paragraph
3 Policy, sub-paragraph 2, dated
25 October 1994.
Front connected bases include
cable lugs. Cover cable sizes
2828CM to 100,000CM.
Only 3-pole breakers are furnished,
for 2-pole applications make
connections to outside poles.
Instantaneous trip setting at
1200 – 1400% HI or 500 – 700% LO.
Set at LO position at factory.
Manufactured to meet MIL-C 17361
D or prior revisions only.
“G” indicates generator breakers.
Refer to Eaton for further
information.
TYPE
TRIP UNIT
AMPERE
RATING
INSTANTANEOUS TRIP SETTING
AC 60 CYCLES THERMAL
MAGNETIC
STYLE NUMBER
NATIONAL
STOCK NUMBER
MAGNETIC
ONLY STYLE
NATIONAL
STOCK NUMBERHI LO
AQB-A101 15 180 – 210 75 – 105 458D509G11 5925-00-876-9216 458D511G11 5925-00-397-8258
AQB-A101 25 300 – 350 125 – 175 458D509G12 5925-00-876-9217 458D511G12 —
AQB-A101 50 600 – 700 250 – 350 458D509G13 5925-00-876-9218 458D511G13 5925-00-546-3258
AQB-A101 75 900 – 1050 375 – 525 458D509G14 5925-01-136-5633 458D511G14 —
AQB-A101 100 1200 – 1400 500 – 700 458D509G15 5925-00-876-9220 458D511G15 5925-01-022-5086
AQB-A101 100G 1200 – 1400 500 – 700 458D509G16 5925-00-619-0412 — —
NQB-A101 100 Non-Automatic — 458D509G20 5930-00-969-2477 — —
400 Cycle
AQB-A101 15H 180 – 210 75 – 105 458D510G11 5925-00-867-7328 458D512G11 —
AQB-A101 25H 300 – 350 125 – 175 458D510G12 5925-00-867-7329 458D512G12 —
AQB-A101 50H 600 – 700 250 – 350 458D510G13 5925-00-986-7313 458D512G13 —
AQB-A101 75H 900 – 1050 375 – 525 458D510G14 5925-00-986-7314 458D512G14 —
AQB-A101 100H 1200 – 1400 500 – 700 458D510G15 5925-00-972-3000 458D512G15 —
AQB-A101 100GH 1200 – 1400 500 – 700 458D510G16 5925-01-200-7813 — —
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 35
AQB-A101 AND NQB-A101 CIRCUIT BREAKER PRODUCT SELECTION — BREAKERS WITH ATTACHMENTS
For list prices, see Price and
Availability Digest (PAD).
For other configurations, call Eaton.
Complete breaker does not include
mounting bases. Type required
must be ordered separately.
Note:
These breakers are non-repairable
per NAVSEA letter, serial number
9077 Ser 03/03 EI-48, paragraph
3 Policy, sub-paragraph 2, dated
25 October 1994.
Front connected bases include
cable lugs. Cover cable sizes
2828CM to 100,000CM.
Only 3-pole breakers are furnished,
for 2-pole applications make
connections to outside poles.
Instantaneous trip setting at
1200 – 1400% HI or 500 – 700% LO.
Set at LO position at factory.
Shunt trip with IAIB Auxiliary
Switch.
TYPE
TRIP UNIT
RATING
INSTANTANEOUS TRIP SETTING
AC 60 CYCLE STYLE
NUMBER ATTACHMENT
NATIONAL
STOCK NUMBERHIGH LOW
60 Hz
AQB-A101 15 180 – 210 75 – 105 5682D24G13 120 Vac Shunt Trip 5925-00-813-2470
AQB-A101 25 300 – 350 125 – 175 5682D24G14 120 Vac Shunt Trip 5925-01-028-6500
AQB-A101 50 600 – 700 250 – 350 5682D24G15 120 Vac Shunt Trip 5925-01-241-3396
AQB-A101 75 900 – 1050 375 – 525 5682D24G16 120 Vac Shunt Trip 5925-00-167-7513
AQB-A101 100 1200 – 1400 500 – 700 5682D24G17 120 Vac Shunt Trip 5925-00-938-3446
NQB-A101 100 Non-Automatic — 5682D24G19 120 Vac Shunt Trip 5930-01-197-4752
400 Hz
AQB-A101 15H 180 – 210 75 – 105 5682D24G36 120 Vac Shunt Trip 5925-01-359-1968
AQB-A101 25H 300 – 350 125 – 175 5682D24G37 120 Vac Shunt Trip 5925-01-339-4840
AQB-A101 50H 600 – 700 250 – 350 5682D24G38 120 Vac Shunt Trip 5925-01-339-4839
AQB-A101 75H 900 – 1050 375 – 525 5682D24G39 120 Vac Shunt Trip 5925-01-359-1969
AQB-A101 100H 1200 – 1400 500 – 700 5682D24G40 120 Vac Shunt Trip 5925-01-293-9163
36 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A101,
NQB-A101
SWITCHBOARD/PANELBOARD MOUNTING
AQB-A101 Breaker with Single Front
Connected Base
Fuse Unit Assemblies
AQB-F101A and AQB-F101B
fuse units are designed for use
in conjunction with standard
AQB-A101 circuit breakers on cir-
cuits where a fault potential of
up to 100,000 amperes exists.
For ordering information, see
Page 5.
AQB-A101 Breaker with Single Front
Connected Base
NET WEIGHT
AQB-A101 Single Mounting Base —
Rear Connected
AQB-A101 Double Mounting Base —
Front Connected
Individual fuses are not replace-
able; replace with complete unit.
To convert for use with high rating
unit (AQB-F101B) in field, remove
rejection pin per instructions on
fuse unit mounting base nameplate.
TYPE
STYLE
NUMBER
NET WEIGHT,
LBS. (KG)
NATIONAL
STOCK NUMBER
Single Base — Front Connected 315C364G03 2.75 (1.2) 5925-00-832-6143
Single Base — Rear Connected 315C364G02 3.00 (1.4) 5925-00-521-2526
Single Base — Rear Connected, Line Front Connected,
Load for Use with Rear Connected Fuse Base 315C364G07 3.00 (1.4) —
Double Base Front Connected 458D569G02 3.50 (1.6) 5925-00-728-5217
Double Base Rear Connected 458D569G03 4.00 (1.8) 5925-01-221-8617
DESCRIPTION
NET WEIGHT,
LBS. (KG)
AQB-A101 Breaker 6.00 (2.7)
NQB-A101 Breaker 5.75 (2.6)
AQB-F101A Fuse Unit 2.00 (0.9)
AQB-F101B Fuse Unit 2.00 (0.9)
Fuse Unit
Mounting Base
3.00 (1.4)
COMPLETE FUSE UNIT ASSEMBLY SHIPPED AS:
STYLE
NUMBER
AMPERE
RATING CONNECTION
FUSE UNIT FUSE UNIT MOUNTING BASE
TYPE STYLE NUMBER
NATIONAL
STOCK NUMBER STYLE NUMBER
NATIONAL
STOCK NUMBER
372B155G01 15 – 25 Front AQB-F101A 504C010H01 5920-00-215-4727 655D258G01 5925-00-998-1965
372B155G02 15 – 25 Rear AQB-F101A 504C010H01 5920-00-215-4727 655D258G05 5920-01-216-6127
372B155G03 50, 75 and 100 Front AQB-F101B 504C010H02 5920-01-281-4158 655D258G03 5920-01-138-0548
372B155G04 50, 75 and 100 Rear AQB-F101B 504C010H02 5920-01-281-4158 655D258G06 5920-01-216-6128
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 37
Additions
Shunt Trip
Breakers can be equipped with a
shunt trip attachment for tripping
the breaker from a remote point,
and can be supplied with coils for
120 volts, 60 cycle or for 120
volts dc. These shunt trips have
momentary rated coils and are
supplied with an auxiliary switch
to be wired in series for protec-
tion (Auxiliary switch included
with the shunt trip. Do not order
separately). Shunt trips are
always mounted in the right
pole. Leads extend 36 inches
outside of breaker. For 400 Hz
shunt trip contact Eaton.
To order, specify style number of
standard breaker required plus
shunt trip voltage and frequency.
Must be factory installed. Net
weight .3 lbs.
Auxiliary Switch
Breakers can be supplied with
internally mounted auxiliary
switch to open or close control
circuits as breaker operates.
Each switch provides one “A”
contact and one “B” contact.
“A” contact is closed when
breaker is closed, open when
breaker is open. “B” contact is
open when breaker is closed and
closed when breaker is open.
When ordered with one switch
it is normally mounted in right
pole, may be specified mounted
in left pole. A maximum of 2
switches can be supplied: one in
left and one in right pole. Order
by description. Must be factory
installed. Net weight .3 lbs.
Note:
One auxiliary switch normally
supplied with shunt trip attach-
ments for cut-off switch and
additional switches cannot be
supplied on breakers with
shunt trips.
Handle Lock
When specified, order style
1614485.
NSN 5930-00-669-7524.
Handle Boot
When specified, order style
number 752B729H01.
Rear Stud
Complete with 4 nuts, style
number 208B801G01.
Fungus-Moisture Resistant
Treatment
(JAN-T-152, JAN-C-173 or
MIL-V-173). If specified, contact
Eaton. External parts are coated.
Technical Manual
Navships No. 362-2314. This
booklet per MIL-M-15071. When
required, order BVR-TM-475C.
Drawings Available
900J429 — Master drawing for
breaker and mounting bases.
900J439 — Master drawing
for breaker with fuse unit and
mounting bases.
459D448 — Outline and wiring
diagram for breaker on single
base.
654D255 — Outline and wiring
diagram for breaker with fuse
unit on single base.
459D449 — Outline and wiring
diagram for breaker on double
base.
654D256 — Outline and wiring
diagram for breaker with fuse
unit on double base.
657D205 — For fuse unit
mounting base only.
Individual Reproductions
When required, reproduction of
master drawings, outline draw-
ings and certification sheets can
be ordered as follows:
ITEM DESCRIPTION
1 Full size photolithic tracing
of master drawing on vellum
2 Outline and drilling plan
on vellum
3 Certification data on vellum
4 Reproductions of Items 1, 2
or 3
38 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A101,
NQB-A101, AQB-A103,
NQB-A103
Outline Dimensions
AQB-A101 and AQB-A103
Breakers — Dimensions
in Inches
For Single Breaker
Mounted Base
Single Breaker
(Rear Mounted)
Drilling Plan
For Single Mounted Base
N
a
m
e
-
Pl
ate
Load En
d
d
d
Line En
e
e
d
4-1
/8
2-1
/
1
6
1-3
/8
1-3
/8
11
/
1
6
15
/
3
2
1-15
/
1
6
6-1/
2
5-9
/
1
6
2-5/
8
3
/
1
6
3
/8
5
/
3
2
9
/
32 Diamete
r
(4 Mt
g
. Holes
)
.190-32 X 3-3
/
4
–
R
d.
H
ead
Sc
r
ew
6-1
/4
3
/
1
6
5-1
/4
2-1
/2
1/16 Thic
k
In
su
l
at
i
o
n
1
/
6
4
1-3
/8
3-13
/
1
6
1
/4
1
/4
1
/4
19
/
3
2
19/3
2
3
/
8-16 Thd
.
1-1
/
3
2
1-7
/
1
6
7
/
3
2
1
/
6
4
3/4 Dia
.
2-3
/
16
1
/
3
2
1
/4
3-15
/
1
6
1
/
1
6
1
/4
Di
a.
1-3
/
3
2
1
/8
7
/
1
6
1-11/1
6
1-1
/
3
2
St
y
le 315C364602
(
Recommended
)
)
/
Co
pp
er Extension
s
for Me
gg
er Readin
g
s
.
Co
pp
er Extensions C
a
n
B
e
Br
o
k
e
n
O
ff Wi
th
4-1
/8
2-1/1
6
1-11
/
3
2
11
/
3
2
11/1
6
7
/
3
2
3-11
/
1
6
1-11
/
3
2
3
/
1
6
1
/
16
R
1
/
16
R
1
/2
7
/
1
6
1-3
/8
11
/
1
6
3-5
/
1
6
3
/
8
R
2-7
/8
1-3
/8
11
/
1
6
1-33
/
6
4
1-3
/
3
2
1-11
/
3
2
6-1
/2
2-51
/
6
4
1-11
/
3
2
2 Inserts
(
Inser
t
Remove Breaker
)
Mt
g
. B
k
r.
r.
Mt
g
. Bas
e
.098 Diameter Hole for Handle Lockin
g
Device or Warnin
g
Ta
g
4-7
/8
4-1
/
1
6
3-7
/8
3
/
1
6
2-5
/
1
6
1
/4
7
/
3
2
1
/
16
R
1-23
/
6
4
On
2-11
/
1
6
17-1
/2
°
11-1
/2
°
R
eset
5
°
T
T
7
/
3
2
2
9
/3
R
11
/
3
2
Piv
ot
Lin
e
3
/
3
2
8-1
/2
°
T
ri
pp
e
d
4-1
/2
°
Off 5
/
16 Thk.
1-9
/
3
2
3-15
/
1
6
1-9
/
3
2
WARNING
OPEN BREAKER BEFORE REMOVIN
E
BREAKER BEFORE REM
G
ON
OFF
F
1-7
/
1
6
13
/
1
6
On
Of
f
Style 161448
5
(Not Su
pp
lied With Circuit Breaker
)
R
e
v
e
r
se
P
os
i
t
i
o
n
o
f L
oc
kT
o
Prevent Breaker From Openin
g
CIRCUIT BREAKER HANDLE
LOCKING DEVICE
1-1/
4
1-5
/8
13
/
1
6
6-1/2
1/
1/
2-1
/
1
6
5
/
16
Di
a
m
ete
r
Me
gg
er
T
est
H
o
l
es
2-15
/
1
6
4-1
/8
3
/
1
6
1-3
/8
Br
ea
k
e
r
Out
lin
e
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 39
Outline Dimensions
AQB-A101 and AQB-A103
Breaker Mounting Bases —
Dimensions in Inches
For Two Breaker
Mounting Base
For Double Mounting Base
Front Connected
For Double Mounting Base
Rear Connected
Front Cover Cutouts for
Double Mounting Base
C
L
C
C
B
et
w
een
o
f N
e
x
t
B
ase
4-1
/8
1-3
/8
1-3
/8
3
/8
3
/
1
6
11
/
3
2
1-3
/8
1-3
/8
11
/
1
6
L
oad
1
/2
1
/4
6-1
/
3
2
1
/2
1
/4
1
/
4-2
0
T
a
p
(
2 Holes
)
1
/
4-2
0
T
a
p
(
2 Holes
)
4-1
/8
4-1
/8
3-1
/2
1-3
/4
3-1
/2
3-1/
2
7
4-1
/8
13-5
/
1
6
6-1/3
2
1
/
4-2
0
T
a
p
(
2 Holes
)
Lin
e
L
oad
Name
p
lat
e
2-1
/
1
6
9/32 Dia. Mt
g
. Hol
e
4-1
/8
17
/
32 C
’
.190-32 X 3-3
/4
R
ou
n
d
H
ead
Sc
r
ew
3-55
/
6
4
3
/
1
6
5-19
/
3
2
14
Front Cove
r
P
iv
o
t
Lin
e
Copper Extensions for Me
gg
er Readin
gs
5-1
/4
6-1
/4
1-1
/
3
2
1-3
/
8
1
/
16 Thk. Insulation Recommende
d
Not Furnished
)
1
P
iv
o
t
Lin
e
2
9
/
16
M
a
xim
um
W
i
dt
h
an
d
M
a
xim
um
Thick Co
ppe
r
B
us
Com
p
let
e
H
a
r
d
w
a
r
e
E
xce
p
t f
o
r
Co
ppe
r
B
us
B
a
r
s
1/4 Dia
.
Mountin
g
Bol
t
Hole
(
6
)
Mountin
g
Plat
e
Cab
l
e
En
t
r
a
n
ce
H
a
r
d
w
a
r
e
u
pp
lie
d
C
o
pp
e
r
B
us
B
a
r
s
In
su
l
at
i
o
n
S
h
eet
(
Not Su
pp
lie
d
)
2-1
/2
1-1
/
32
1
/
4 Dia
.
1
/4
14
3-1
/2
12-1
/
1
6
D
rill 13
/
32 Min. Dia. Hole
s
5
/
16 Dia.
Me
gg
e
r
T
est
H
o
l
es
3
/
1
6
1-5
/8
13
/
1
6
B
ase
Out
lin
e
Br
ea
k
e
r
Out
lin
e
1
3
6-1
/2
3
/
1
6
4-1
/8
2-1
/
1
6
2-15
/
1
6
1-1
/4
1-1
/4
1-3
/8
14
1-3
/8
2-15
/
1
6
40 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A101,
NQB-A101, AQB-A103,
NQB-A103
For Mounting of Breaker
(Front Connected)
For Mounting of Breaker
(Rear Connected)
For Dimensions of Breaker and
Mounting Base, See Drawing
Number 459D448.
Drilling Plan
For Rear Connected Studs
and Mounting Bases.
Front Panel Cutout
1-3
/8
2-3
/4
1
/
1
6
R
3-1
/4
3-3
/8
3-3
/4
1-5
/8
1-11
/
1
6
1-7
/8
.1
90
-
3
2 In
se
r
ts
(
2
)
for Fus
e
P
u
ll
e
r
Sc
r
ew
s
T
erminal for Minimum Navy Cable Thfa-3-2828 C.M.
T
T
a
nd Maximum Nav
y
Thfa-100-100,000 C.M
.
13
/
1
6
6-1
/
1
6
2
6-11
/
1
6
2-1
/2
R
e
j
ecti
o
n
S
c
r
ew
A
Q
B-F1
0
1
A
or
A
Q
B-F1
0
1
B
AQ
B-A1
01
6-1
/4
5-1
/4
Fr
o
n
t
P
a
n
el
Copper Extensions for Me
gg
er Readin
gs
(Ma
y
Be Broken Off if Not Re
q
uire
d
)
4-1
/8
2-1
/
1
6
5
/
3
2
6-1
/2
1/
16 Thick Insulatio
n
R
eco
mm
e
n
de
d
1-15
/
1
6
2-5/
8
6
1
/2
1-11
/
1
6
23
/
32 Max. Across Corner
s
15
/
3
2
9-1
/
1
6
In
su
l
at
i
o
n
S
h
eet
(Not Su
pp
lie
d
)
3
/
8-16 Thd
.
2-1
/2
1
0
B
ase
Out
lin
e
15
/
3
2
2-3
/4
1-3
/8
1-15
/
1
6
2-5
/8
6
3-3
/8
1-11
/
1
6
13
/
32 Min. Dia.
(
6 Holes
)
f
o
r
R
ea
r
Co
nn
ected
Studs
1
/
4-2
0
T
a
p
(6 Holes
)
for Mountin
g
Base
s
9-1
/
1
6
C
L
CC
11
/
3
2
6-9
/
1
6
2-15
/
1
6
1-5
/8
13
/
1
6
B
r
ea
k
e
r
Out
li
n
e
5/16 Dia. Me
gg
er (3 Holes
)
4
2-3
/4
1-3
/8
2
o
f Br
ea
k
er
2-3
/4
1-1
/4
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 41
Outline Dimensions
AQB-A101 and AQB-A103
Breakers, Double Base with
Fuse Units — Dimensions in
Inches
For Mounting of Two
Breakers (Front Connected)
For Mounting of Two
Breakers (Rear Connected)
For Dimensions of Breaker and
Mounting Base, See Drawing
Number 459D449.
Drilling Plan
For Rear Connected Studs
and Mounting Bases.
Front Panel Cutout
3-3
/4
1-7
/8
1-5
/8
1
/
1
6
R
1
.190-32 Inserts
(
2
)
f
o
r F
use
P
u
ll
e
r
Sc
r
e
w
s
2
0
1
3
1
0
6-1
/2
1-3
/8
2-3
/4
1-11
/
1
6
3-3/
8
2-1
/
1
6
4-1
/8
Terminal for Minimum Nav
y
Cable Thfa-3-2828 C.M.
and Maximum Nav
y
Thfa-100-100,000 C.M
.
A
Q
B-F1
0
1A
or
A
Q
B-F1
0
1
B
A
Q
B-F1
0
1A
or
A
Q
B-F1
0
1
B
6-1
/4
6-1
/
16
1-11/1
6
1
/2
6-11
/
1
6
13-5
/
1
6
1
/
16 Thick Insulation Recommende
d
2-1
/2
15-7
/8
6
-21
/
32
7
-15
/
16
1-3
/4
6-11
/
1
6
13
/
1
6
1-3
/4
2-1
/2
19-1
/6
23
/
32 Max.
A
c
r
oss
Co
rn
e
r
s
In
su
l
at
i
o
n
S
h
eet
(
Not
Su
pp
lied
)
9-17
/
3
2
.
3
7
5
-1
6
Th
d.
3-1
/4
A
Q
B-A1
01
A
Q
B-A1
01
.406 Min. Dia.
(
6 Holes
)
f
o
r
R
ea
r
Co
nn
ected
Stud
7-15
/
1
6
9-17
/
3
2
15-7
/8
1-3
/8
19-1
/6
.2
50
-2
0
T
a
p
(10 Holes
)
for Mountin
g
Base
s
2-3
/4
1-3
/8
1-11
/
1
6
3-3/
8
11
/
1
6
1-3
/4
6-21
/
3
2
13-5
/6
1-3
/
4
B
ase
Out
li
n
e
11
/
3
2
5/16 Dia. Me
gge
r
(
6 Holes
)
2-3
/4
1-3
/8
1-5
/8
13
/
1
6
2-15
/
1
6
B
r
ea
k
e
r
Out
li
n
e
2-3
/4
6-9
/
1
6
6-9
/
1
6
1-1
/4
11
/
3
2
2-3
/4
2-15
/
1
6
2
4
42 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A101,
NQB-A101, AQB-A103,
NQB-A103
Characteristic Time-Current
Curves
AQB-A101 Breakers
Operating Characteristics
Trip Unit Rating 15 – 100
Amperes 50°C Ambient —
Cold Start, 60 Cycle, ac or dc,
Thermal-Magnetic.
400 Cycle Breakers
Operating Characteristics
Trip Unit Rating 15 – 100
Amperes 50°C Ambient —
Cold Start 400 Cycle ac, Thermal-
Magnetic Trip Unit Rating.
Hou
r
s
M
in
utes
Seco
n
ds
Ti
me
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
0
1
5
0
100
200
300
400
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
In
sta
n
ta
n
eou
s
T
ri
p
at 1200% t
o
1400% Ratin
g
In
sta
n
ta
n
eou
s
T
ri
p
at 500% t
o
g
Hou
r
s
Ti
m
e, Minutes
Seco
n
ds
30
4
3
2
1
50
4
0
2
0
1
0
4
3
2
1
5
30
4
0
2
0
1
0
4
3
2
1
5
0
0
0
100
2
00
300
4
00
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
Trip Unit Rating
To determine the trip unit rating
to be used, when the load cur-
rent and ambient are known,
multiply the load current by the
factor obtained from this curve
for the known ambient. The
result will be the ideal trip unit
rating. However, since trip units
are furnished only with standard
ratings as per Navy spec., select
the standard trip unit whose
rating is equal to or one rating
higher than the ideal rating.
Specification MIL-C-17361
This specification covers all
thermal-magnetic AQB breakers.
It requires that they carry 150%
of current ratings for at least one
hour and that thermal elements
initiate tripping at 225% rated
current within one hour and at
600% in 25 seconds plus or
minus 25%. The instantaneous
magnetic settings for each con-
tinuous ratings are based on
intended applications. (Thermal
tripping tests are conducted with
all poles in series in 50°C ambi-
ent; each pole is tested individu-
ally to check magnetic settings.)
90
80
7
0
60
50
4
0
30
2
0
1
0
0
0
0
.
5
1.
0
1.
5
2.
0
2.
5
3
.
0
3
.
5
4.
0
4.
5
F
actor
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 43
Characteristic Time-Current
Curves
Generator Breakers
50°C Ambient — Cold Start “G”
rating, 60 or 400 Cycle ac or dc,
Thermal-Magnetic.
Hou
r
s
Ti
me
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
0
1
5
0
1
00
200
300
400
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
4
00
H
z
In
sta
n
ta
n
eous
1400% Ratin
g
T
ri
p
at 500% t
o
700
%
Rati
n
g
Hou
r
s
Ti
me
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
4
0
30
2
0
1
0
5
4
3
2
1
0
1
5
0
100
200
300
400
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
60
H
z
In
sta
n
ta
n
eous
2300
%
Rati
n
g
T
ri
p
at 850% to
1150
%
Rati
n
g
44 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A103RMS,
NQB-A103
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A103 RMS,
NQB-A103 Breakers
500 Volts ac, 100 Amperes
Maximum, 15,000 Amperes I.C.
Specifications: MIL-C-17361
●10 – 100 amperes.
●500 volts ac (No dc).
●60/400 Hz (Universal).
●3-pole.
Interrupting Rating
●15,000 amperes, 60 Hz ac.
●7,500 amperes, 400 Hz ac.
●100 kA with fuse kit units.
●Class: Hi shock MIL-S-901:
50°C ambient.
AQB-A103 RMS circuit breakers
are designated for use in lighting
and distribution panelboards and
for switchboards in the protec-
tion of feeder and motor branch
circuits.
The AQB-A103 RMS now fea-
tures true rms sensing, which
works on any waveform shape,
is more accurate and is less
sensitive to nuisance tripping.
AQB-A103 RMS circuit breakers
are form fit and function inter-
changeable with A101 circuit
breakers. The electronic trip unit
provides better shock immunity,
enhanced trip curve shaping
capabilities, improved selectivity
and system coordination, and
dramatic logistical savings.
NQB-A103 circuit breakers have
a maximum continuous current
rating of 100 amperes. They are
used only as disconnects, since
they do not include an automatic
opening device.
AQB-A103RMS Characteristics
Continuous Current Setting
(6-Position Selector Switch)
10 – 25 Amperes (10, 12.5, 15,
18.75, 20, 25)
40 – 100 Amperes (40, 50, 60,
75, 80, 100)
Instantaneous Pickup — Adjust-
able in multiples of 25 or 100
ampere frame rating (6x, 8x, 10x,
12x, 15x, 20x, 30x, 40x)
Short Delay Pickup — Adjustable
in multiples of continuous cur-
rent setting (2x, 3x, 5x, 7x, 9x,
10x, 13x, 14x)
Short Delay Time — Adjustable
with bands Min., 1, 2, 3, Max.,
plus 3 new flat response curves
at 100 ms, 200 ms and 300 ms.
(See trip curve.)
Net Weight
AQB — 6.0 lbs. (2.7 kg.)
NQB — 5.75 lbs. (2.6 kg.)
Drawings Available
1376D98 Master
1376D60 Outline
Technical Manual
1244C68H01
STK-2 Portable Test Kit
For switchboards and panelboard
mounting and other accessories
see Pages 36 and 37.
For outline dimensions see
Pages 38 – 41.
AQB-A103 RMS AND NQB-A103 CIRCUIT BREAKER
PRODUCT SELECTION
For list prices, See Price and
Availability Digest (PAD).
Complete breaker does not include
mounting bases. Type required
must be ordered separately.
Front connected bases include
cable lugs. Cover cable sizes
2828CM to 100,000CM.
Only 3-pole breakers are furnished,
for 2-pole applications make
connections to outside poles.
ST is shunt trip which has its own
built-in cutoff switch and always
left pole.
AMPERES
STYLE
NUMBER
NATIONAL
STOCK NUMBER
10 – 25 1376D96G01 5925-01-455-8639
40 – 100 1376D96G02 5925-01-455-8635
10 – 25 1376D96G07 with 115 Vac ST 5925-01-482-1112
40 – 100 1376D96G08 with 115 Vac ST 5925-01-482-1134
100 1376D96G51 NQB-A103 5925-01-456-0004
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 45
Types AQB-A103,
NQB-A103
Characteristic Time-Current
Curve Navy Type AQB-A103
RMS Circuit Breaker
Time-Current Curve for
AQB-A103 RMS Circuit
Breaker (Long Delay and
Short Delay with Flat
Response)
CURVE NO. SC-7238-02
.01
2
60
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
3
4
5
6
7
8
9
10
20
30
40
50
70
80
90
100
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
1 MINUTE
SRUOH2
SDNOCESNIEMIT
1 HOUR
.02
.03
.04
.05
.06
.07
.08
.09
.10
.2
.3
.4
.5
CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS)
CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS)
.01
.5
.6
.7
.8
.9
1
2
3
4
5
6
7
8
9
10
20
30
.5
.6
.7
.8
.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
40
50
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
60
70
10X
100ms
Instantaneous
Setting
Determines
End of Curve
Type AQB-A103 RMS Circuit Breakers
Catalog Types (Basic Type)
25A-1376D96G01
100A-1376D96G02
Curve: Long Delay and Short Delay with Flat Response
Circuit Breaker Time / Current Curves (Phase Current)
Notes:
1. Curve accuracy applies from -20 C to +55 C ambient. For possible
continuous ampere derating for ambient above 50 C, refer to Cutler-Hammer.
2. The end of the curve is determined by the interrupting rating of the circuit
breaker. See above calculations.
3. AQB-A103 RMS breakers are suitable for functional eld testing with test kit
catalog number STK2.
4. There is memory eect that can act to shorten the long delay. The memory
eect comes into play if a current above the Long Delay Pick Up value exists
for a time and then is cleared by the tripping of a downstream device or the
circuit breaker itself. A subsequent overload will cause the circuit breaker to
trip in shorter time than normal. The amount of time delay reduction is
inverse to the amount of time that has elapsed since the previous overload.
Approximately ve minutes is required between overloads to completely reset
memory.
5. Long Delay Pick Up is 10%.
6. Long Delay Time at 6x is 20-32 seconds.
At 2.25x i s < 1 hour.
At 1.5x i s > 1 hour.
7. Short Delay Pick Up is 10%.
8. Fixed Short Delay Time is 10%.
ºº
º
±
±
±
Breaker Type Voltage Rating 500 Vac
AQB-A103 RMS Frequency 60 Hz 400 Hz
(Without Fuse)
Interrupting Current 15 kA 7.5 kA
13X
1.44x
200ms
300ms
Available Settings
Frame Rating Continuous Current Setting Short Delay
(I ) (CCS) .4 -1.0 x (I ) Setting x (CCS)
(2x - 14x)
041-020152
12.5 25 - 175
012-0351
18.75 37.5 - 262.5
082-0402
053-0552
065-0804001
50 100 - 700
60 120 - 840
75 150 - 1050
80 160 - 1120
100 200 - 1400
nn
Available
Short Delay
Settings:
2x, 3x, 5x, 7x,
9x,10x,13x
and 14x
5X 7X
3X
2X
9X
Long
Time
Delay
1.76x
SDNOCESNIEMIT
Short Delay
Pickup - 2X
14X Short Delay
Pickup - 14X
See Note 6
1.60x
Long
Time
Delay
46 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A103,
NQB-A103
Characteristic Time-Current
Curve Navy Type AQB-A103
RMS Circuit Breaker
Time-Current Curve for
AQB-A103 RMS Circuit
Breaker (Long Delay and
Short Delay with I2t
Response)
CURVE NO. SC-7238-02
.01
2
60
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
3
4
5
6
7
8
9
10
20
30
40
50
70
80
90
100
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
1 MINUTE
SRUOH2
SDNOCESNIEMIT
1 HOUR
.02
.03
.04
.05
.06
.07
.08
.09
.10
.2
.3
.4
.5
.6
.7
CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS)
CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS)
.01
.9
.5
.6
.7
.8
.9
1
2
3
4
5
6
7
8
9
10
20
30
.5
.6
.7
.8
.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
Notes:
1. Curve accuracy applies from -20 C to +55 C ambient. For possible continuous ampere derating
for ambient above 50 C, refer to Cutler-Hammer.
2. The end of the curve is determined by the interrupting rating of the circuit breaker.
See above calculations.
3. AQB-A103 RMS breakers are suitable for functional eld testing with test kit catalog number STK2.
4. There is memory eect that can act to shorten the Long Delay. The memory eect comes into play
if a current above the Long Delay Pick Up value exists for a time and then is cleared by the tripping
of a downstream device or the circuit breaker itself. A subsequent overload will cause the circuit
breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the
amount of time that has elapsed since the previous overload. Approximately ve minutes is
required between overloads to completely reset memory.
5. Long Delay Pick Up is 10%.
6. Long Delay Time at 6x is 20-32 seconds. (26 seconds nominal) At 2.25x i s < 1 hour.
At 1.5x i s > 1 hour.
7. Fixed Short Delay Pick Up is 10%.
8. Short Delay Time is 10%.
9. Short Delay response reverts to a at response at current levels greater than 16x CCS.IT
2
ºº
º
±
±
±
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Instantaneous Setting
Determines End of Curve
SD Band
(Minimum)
1.44x
Long Time Delay
Maximum
Clearing Time
Breaker Type Voltage Rating 500 Vac
AQB-A103 RMS Frequency 60 Hz 400 Hz
(Without Fuse)
Interrupting Current 15 kA 7.5 kA
Circuit Breaker Time / Current Curves (Phase Current)
Type AQB-A103 RMS Circuit Breakers
Catalog Types (Basic Type)
25A-1376D96G01
100A-1376D96G02
Curve: Long Delay and Short Delay with I T Response
2
.8
1
1.76x
Long
Time
Delay
Long Time
Delay
Minimum
Clearing
Time
Short Delay
Pick Up
14X
)
1
(
d
naBDS
)mumix
aM(dnaBDS
SD Band (2)
)3(dnaBDS
Available Short Delay
Settings (8):
2X, 3X, 5X, 7X, 9X,
10X, 13X and 14X
SDNOCESNIEMIT
Available Settings
Frame Rating Continuous Current Setting Short Delay
(I ) (CCS) .4 -1.0 x (I ) Setting x (CCS)
(2x - 14x)
041-020152
12.5 25 - 175
012-0351
18.75 37.5 - 262.5
082-0402
053-0552
065-0804001
50 100 - 700
60 120 - 840
75 150 - 1050
80 160 - 1120
100 200 - 1400
nn
16X
5X
3X
Short Delay
Pick Up
2X
SD Band (Maximum)
SDBan
d(3)
SD Band (2)
SD Band (1)
See
Note 9
See Note 6
1.60x
@ 4X, SD Band
Max = 16 seconds
#3 = 8 seconds
#2 = 4 seconds
#1 = 2 seconds
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 47
Characteristic Time-Current
Curve Navy Type AQB-A103
RMS Circuit Breaker
Time-Current Curve for
AQB-A103 RMS Circuit
Breaker (Instantaneous
Response)
CURVE NO. SC-7238-02
CURRENT IN MULTIPLES OF In
.01
2
5
6
7
8
9
60
90
100
.02
.03
.04
.05
.06
.07
.08
.09
.10
.2
.3
.4
.5
.6
.7
.8
.9
1
3
4
10
20
30
40
50
70
80
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
1 MINUTE
2HOURS
TIME IN SECONDS
1HOU
R
.02
.03
TIME IN SECONDS
Circuit Breaker Time / Current Curves (Phase Current)
Type AQB-A103 RMS Circuit Breakers
Catalog Types (Basic Type)
25A - 1376D96G01
100A - 1376D96G02
Curve: Instantaneous Response
.01
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
500
800
600
900
700
400
1000
300
400
30
40
6
20
15
10 12
8
1
10
Instantaneous
Pick-up (x I )
25 A Frame (I )
3 Pole 500 V.A.C.
60 or 400 Hz
Continuous
Current
Cutler-Hammer NP6591C91H08 Made in U.S.A. Date:
Style number
NSN number
Short Delay
Pickup (xCCS)
Short Delay
Band
n
NAVY TYPE AQB-A103 RMS
100
Min. Max.
3
2
200 300
20
18.75
12.5 15
25
14
79
10
3
5
13
2
FLAT(ms)
Setting (Amps, CCS)
n
NAVY TYPE AQB-A103 RMS
NP6591C91H09 Made in U.S.A.Cutler-Hammer
Pick-up (x I )
Inst ant aneous
Cur tren
Continuous
100 A Frame (I )
3 Pole 500 V.A.C .
60 or 400 Hz
n20
40
8
630
12
10 15
Date:
Pickup (xCCS)
Short Delay
Short Delay
Band
Style number
NSN No.
3
3
5
7
10
9
1
Min.
2
Max.
200 300100
80
40
50 75
60
100
FLAT (ms)
13
14
2
Setting (Amp s, CCS)
n
Frame Rating Instantaneous Setting Instantaneous Current
Inx(I
n) (Amperes)
25 6 150
8 200
10 250
12 300
15 375
20 500
30 750
40 1000
100 6 600
8800
10 1000
12 1200
15 1500
20 2000
30 3000
40 4000
Breaker Type Voltage Rating 500 Vac
AQB-A103 RMS Frequency 60 Hz 400 Hz
(Without Fuse)
Interrupting Current 15 kA Asym. 7.5 kA Asym.
Notes:
1. Instantaneous Pick Up is 15%
2. Curve accuracy applies from -20ºC to +55ºC ambient. For possible
continuous ampere derating for ambient above 50ºC, refer to Cutler-Hammer.
3. AQB-A103 RMS breakers are suitable for functional field testing with test kit
catalog number STK2.
±
20X
30X
12X
10X
8X
40X
15X
CURRENT IN MULTIPLES OF In
2000
3000
5000
80000
100000
10000
90000
6000
30000
70000
50000
9000
40000
7000
8000
60000
20000
4000
25 Amp Breaker Nameplate
100 Amp Breaker Nameplate
6X
48 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A250,
NQB-A250
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A250,
NQB-A250 Breakers
250 Volts dc, 500 Volts ac,
250 Amperes Maximum, 20,000
Amperes ac, 15,000 Amperes
dc I.C.
Specification: MIL-C-17361
●100 – 250 amperes.
●500 volts ac and 250 volts dc.
●2- and 3-pole.
Interrupting Ratings
●20,000 amperes ac and
15,000 amperes dc.
AQB-A250 circuit breakers are
used primarily to protect feeder
circuits, however, those followed
by “NM” in the table have higher
magnetic settings to allow for
motor starting. Breakers with
settings specifically for use with
generators are designated “NG”
in the table.
These breakers are available
with interchangeable trip units in
ratings of 125, 150, 175, 225 and
250 amperes. The nonautomatic
NQB-A250 carries a 250 ampere
rating and has copper conductors
replacing the trip unit. Special
generator breakers have trip
units rated at 100, 160 and
250 amperes.
AQB-A250 breakers can be
ordered with undervoltage
release devices, auxiliary
switches and shunt trip attach-
ments complete with auxiliary
switch. These attachments are
also easily installed in the field.
AQB-A250 AND NQB-A250 CIRCUIT BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Note:
Breakers with ratings other than
those given on this page are
considered as special and full
description data must be provided.
Styles listed include slip-type con-
nectors for rear connections. Order
front terminal connectors sepa-
rately if required; see Page 50. No
additional charges for front con-
nectors ordered with breakers or
frames.
Type NQB-A250 non-automatic.
Not to be used with attachments;
if required, order dummy trip unit
452D371G31 for 3-pole and
452D371G16 for 2-pole.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS TRIP
SETTING — AMPERES COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY
AC DC
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBERLOW HIGH LOW HIGH
2-Pole 500 Volts ac, 250 Volts dc
125-N 650 1300 650 1300 313C682G03 5925-01-233-6525 452D370G01 5925-00-796-4371 452D371G03 —
125-NM 1950 3900 2250 4100 313C682G04 —452D370G01 5925-00-796-4371 452D371G04 —
150-N 650 1300 650 1300 313C682G05 —452D370G01 5925-00-796-4371 452D371G05 5925-00-793-6865
150-NM 1950 3900 2250 4100 313C682G06 —452D370G01 5925-00-796-4371 452D371G06 —
175-N 650 1300 650 1300 313C682G07 —452D370G01 5925-00-796-4371 452D371G07 5925-00-175-5058
175-NM 1950 3900 2250 4100 313C682G08 —452D370G01 5925-00-796-4371 452D371G08 —
225-N 650 1300 650 1300 313C682G09 —452D370G01 5925-00-796-4371 452D371G09 5925-00-064-7834
225-NM 1500 3000 1770 3550 313C682G10 —452D370G01 5925-00-796-4371 452D371G10 —
250-N 650 1300 650 1300 313C682G11 —452D370G01 5925-00-796-4371 452D371G11 —
250-NM 1700 3400 1850 3800 313C682G12 —452D370G01 5925-00-796-4371 452D371G12 —
250 Non-Auto Non-Auto 313C682G31 —452D370G03 —29B2710G05 —
2-Pole 500 Volts ac, 250 Volts dc Generator Circuit Breaker Applications
100-NG 1175 2350 — — 313C682G13 —452D370G01 5925-00-796-4371 452D371G13
160-NG 1950 3900 — — 313C682G14 —452D370G01 5925-00-796-4371 452D371G14
250-NG — — 650 1300 313C682G15 —452D370G01 5925-00-796-4371 452D371G15
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 49
AQB-A250 AND NQB-A250 CIRCUIT BREAKER PRODUCT SELECTION (CONTINUED)
For list prices, see Price and
Availability Digest (PAD).
Note:
Breakers with ratings other than
those given on this page are
considered as special and full
description data must be
provided.
Styles listed include slip-type con-
nectors for rear connections. Order
front terminal connectors sepa-
rately if required; see Page 50.
No additional charges for front
connectors ordered with breakers
or frames.
Type NQB-A250 non-automatic.
Not to be used with attachments;
if required, order dummy trip unit
452D371G31 for 3-pole and
452D371G16 for 2-pole.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS TRIP
SETTING — AMPERES COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY
AC DC
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBERLOW HIGH LOW HIGH
3-Pole 500 Volts ac, 250 Volts dc
125-N 650 1300 650 1300 313C682G18 5925-01-173-1114 452D370G02 5925-00-789-3718 452D371G18 5925-00-795-4958
125-NM 1950 3900 2250 4100 313C682G19 5925-01-031-9909 452D370G02 5925-00-789-3718 452D371G19 5925-00-839-0289
150-N 650 1300 650 1300 313C682G20 5925-01-229-4448 452D370G02 5925-00-789-3718 452D371G20 5925-00-795-4957
150-NM 1950 3900 2250 4100 313C682G21 5925-01-303-8381 452D370G02 5925-00-789-3718 452D371G21 5925-00-839-0290
175-N 650 1300 650 1300 313C682G22 5925-00-499-0088 452D370G02 5925-00-789-3718 452D371G22 5925-00-796-4439
175-NM 1950 3900 2250 4100 313C682G23 5925-01-305-6194 452D370G02 5925-00-789-3718 452D371G23 —
225-N 650 1300 650 1300 313C682G24 5925-01-306-0120 452D370G02 5925-00-789-3718 452D371G24 5925-00-839-0291
225-NM 1500 3000 1770 3550 313C682G25 5925-01-210-5267 452D370G02 5925-00-789-3718 452D371G25 5925-00-839-0292
250-N 650 1300 650 1300 313C682G26 5925-01-452-0162 452D370G02 5925-00-789-3718 452D371G26 5925-00-839-0293
250-NM 1700 3400 1850 3800 313C682G27 5925-01-272-3805 452D370G02 5925-00-789-3718 452D371G27 5925-00-690-7568
250 Non-Auto Non-Auto 313C682G36 5930-00-900-0247 452D370G04 5925-00-831-8801 29B2710G06 5925-00-831-8800
3-Pole 500 Volts ac, 250 Volts dc Generator Circuit Breaker Applications
100-NG 1175 2350 — — 313C682G28 5925-01-080-2226 452D370G02 5925-00-789-3718 452D371G28 5925-00-852-7809
160-NG 1950 3900 — — 313C682G29 5925-01-104-4625 452D370G02 5925-00-789-3718 452D371G29 5925-00-795-4956
250-NG — — 650 1300 313C682G30 —452D370G02 5925-00-789-3718 452D371G30 —
50 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A250,
NQB-A250
AQB-A250, NQB-A250 CIRCUIT BREAKER PRODUCT SELECTION (CONTINUED)
For list prices, see Price and
Availability Digest (PAD).
For 400 cycle breakers with higher
instantaneous trip ratings, refer
to Eaton.
Note:
Breakers with ratings other than
those given on this page are
considered as special and full
description data must be provided.
Styles listed include slip-type
connectors for rear connections.
Order front terminal connectors
separately if required. No addi-
tional charges for front connectors
ordered with breakers or frames.
Not to be used with attachments;
see prior Page 48.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS TRIP
SETTING IN AMPERES COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY
AC DC
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBERLOW HIGH LOW HIGH
400 Cycle, 2-Pole, 500 Volts ac
125-NH 910 1560 — — 315C574G03 —452D370G01 5925-00-796-4371 457D446G03 —
150-NH 910 1560 — — 315C574G05 —452D370G01 5925-00-796-4371 457D446G05 —
175-NH 910 1560 — — 315C574G07 —452D370G01 5925-00-796-4371 457D446G07 —
225-NH 910 1560 — — 315C574G09 —452D370G01 5925-00-796-4371 457D446G09 —
250-NH 910 1560 — — 315C574G11 —452D370G01 5925-00-796-4371 457D446G11 —
400 Cycle, 2-Pole, 500 Volts ac Generator Circuit Breaker Applications
100-NGH 2020 3420 — — 315C574G13 —452D370G01 5925-00-796-4371 457D446G13 —
160-NGH 2020 3420 — — 315C574G14 —452D370G01 5925-00-796-4371 457D446G14 5925-00-758-6227
250-NGH 2520 4200 — — 315C574G15 —452D370G01 5925-00-796-4371 457D446G15 —
400 Cycle, 3-Pole, 500 Volts ac
125-NH 910 1560 — — 315C574G18 —452D370G02 5925-00-789-3718 457D446G18 5925-00-803-5491
150-NH 910 1560 — — 315C574G20 5925-01-075-8931 452D370G02 5925-00-789-3718 457D446G20 5925-00-803-5488
175-NH 910 1560 — — 315C574G22 5925-01-100-4027 452D370G02 5925-00-789-3718 457D446G22 5925-00-899-9904
225-NH 910 1560 — — 315C574G24 5925-01-193-6055 452D370G02 5925-00-789-3718 457D446G24 5925-01-193-6056
250-NH 910 1560 — — 315C574G26 5925-01-050-9032 452D370G02 5925-00-789-3718 457D446G26 5925-01-149-4269
400 Cycle, Three-Pole, 500 Volts ac Generator Circuit Breaker Applications
100-NGH 2020 3420 — — 315C574G28 —452D370G02 5925-00-789-3718 457D446G28 5925-00-238-5198
160-NGH 2020 3420 — — 315C574G29 5925-01-330-7615 452D370G02 5925-00-789-3718 457D446G29 5925-00-803-5489
250-NGH 2520 4200 — — 315C574G30 5925-01-238-5706 452D370G02 5925-00-789-3718 457D446G30 5925-00-906-7803
3-Pole, 500 Volts ac, 250 Volts dc Front Connect With Lugs
125-N 650 1300 650 1300 504C191G18 —452D370G06 5925-01-178-8962 452D371G18 5925-00-795-4958
125-NM 1950 3900 2250 4100 504C191G19 5925-01-415-4641 452D370G06 5925-01-178-8962 452D371G19 5925-00-839-0289
150-N 650 1300 650 1300 504C191G20 —452D370G06 5925-01-178-8962 452D371G20 5925-00-795-4957
150-NM 1950 3900 2250 4100 504C191G21 5925-01-437-4675 452D370G06 5925-01-178-8962 452D371G21 5925-00-839-0290
175-N 650 1300 650 1300 504C191G22 —452D370G06 5925-01-178-8962 452D371G22 5925-00-796-4439
175-NM 1950 3900 2250 4100 504C191G23 —452D370G06 5925-01-178-8962 452D371G23 5925-01-305-8589
225-N 650 1300 650 1300 504C191G24 5925-01-415-4638 452D370G06 5925-01-178-8962 452D371G24 5925-00-839-0291
225-NM 1500 3000 1770 3550 504C191G25 —452D370G06 5925-01-178-8962 452D371G25 5925-00-839-0292
250-N 650 1300 650 1300 504C191G26 5925-01-415-4639 452D370G06 5925-01-178-8962 452D371G26 5925-00-839-0293
250-NM 1700 3400 1850 3800 504C191G27 —452D370G06 5925-01-178-8962 452D371G27 5925-00-690-7568
250 Non-Auto Non-Auto 504C191G36 5925-01-345-3653 452D370G08 5925-01-413-1629 29B2710G06 5925-00-831-8800
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 51
Switchboard Mounting
Complete breakers and frames
include mounting hardware.
Female slip connectors are
mounted in breaker base to plug
onto stud projections of terminal
mounting block assemblies. Order
one mounting block assembly for
each end of breaker.
Front Connected Breakers
For connections made at front
terminals, pressure-type lugs
required. If specified on same
order, connectors furnished no
charge. One connector per
terminal. Select from the table
to the right.
NET WEIGHT
KIT TO CONVERT AQB FRAME TO NQB BREAKER
Not to be used with attachments; see Page 48.
Note:
Breaker with ratings other than
those given on this page are
considered as special and full
description data must be provided.
DESCRIPTION
STYLE
NUMBER
NET WEIGHT,
LBS. (KG)
NATIONAL
STOCK NUMBER
One Stud Assembly Complete with 4 Nuts 1631 443 1 (0.5) —
Terminal Mounting Block (No Studs) 313C681G01 1 (0.5) 2920-01-354-4811
Mounting Block and Stud Set (3 Studs) 313C680G02 1.50 (0.7) 5940-01-146-6806
CABLE
RANGE AMPERES DESCRIPTION
STYLE
NUMBER
NATIONAL
STOCK NUMBER
N40-N74 125 — 20B3055H14 5925-01-414-2467
N100-N125 150 – 175 Solderless 20B3055H15 5940-01-429-4972
N150-N200 250 Connector 20B3055H16 5999-01-413-1588
DESCRIPTION
NET WEIGHT,
LBS. (KG)
AQB Complete, 3-Pole A250 20.50 (9.3)
NQB Complete, 3-Pole N250 17.50 (7.9)
3-Pole AQB, NQB Frame 17.00 (7.7)
AQB Trip Unit, 3-Pole 3.50 (1.6)
Motor Operator 18.00 (8.2)
POLES
STYLE
NUMBER
NATIONAL
STOCK NUMBER
NET WEIGHT,
LBS. (KG)
329B2710G06 5925-00-831-8800 .50 (0.2)
229B2710G05 — .50 (0.2)
52 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A250,
NQB-A250
Additions
Handle Lock
If required, order style
28B4596G01. One furnished no
charge per 10 breakers ordered,
when requested. Net weight
0.15 lbs. (0.07 kg).
Mechanical Interlock
If mechanical interlock (switch-
board use) is desired for a pair of
breakers, order by description.
(Not submitted for Navy approval.)
Auxiliary Switch
The most commonly used, stan-
dard mounting is left pole with
leads exiting rear when required,
is style 452D379G02, national
stock number 5930-00-732-8401.
Internally mounted switch is
used to open or close control cir-
cuits as breaker operates and is
provided with “A” and “B” con-
tacts. “A” contact is normally
closed when breaker is closed
and open when breaker is open;
“B” is normally open when
breaker is closed and closed with
breaker open. It has the follow-
ing rating at given voltages:
15 ampere — 125, 250 or 460
volts ac; 1/2 amperes — 125
volts dc; 1/4 ampere — 250 volts
dc. Net weight, 0.17 lb. (0.08 kg).
If 2A/2B auxiliary switch is
required, order Style
452D379G04,
NSN 5930-00-509-2483.
Contact Eaton for other ratings or
types of mounting.
Fungus — Moisture —
Resistant Treatments
(JAN-T-152; JAN-C-173 or MIL-V-
173): If specified, contact Eaton.
External parts are coated; trip
units are not treated.
Technical Manual —
NAVSHIPS No. 362-2164
This booklet per MIL-M-15071.
When required, order BVR-TM-
379A.
Motor Operator
6590C87G01 — 115 Vac, 60 Hz
Shunt Trip
Shunt trip attachments for trip-
ping the breaker electrically from
a remote point are listed in table
below. Shunt trips have momen-
tary rating only and for protection
must be connected in series
with auxiliary switch. Net weight,
0.70 lb. (0.3 kg) Contact Eaton
for 400 Hz. shunt trips.
SHUNT TRIP ATTACHMENT PRODUCT SELECTION
These shunt trips require a sepa-
rate auxiliary switch be ordered.
These shunt trips are mounted
standard right pole with rear leads.
These shunt trips are mounted left
pole with rear leads.
These shunt trips already include
the required auxiliary switch.
NOMINAL
VOLTAGE
VOLTAGE
RANGE
STYLE
NUMBER
NATIONAL
STOCK NUMBER (NSN)
28 Vdc 26 – 36 452D377G01 5925-00-831-8802
115 Vac 90 – 130 452D377G01 5925-00-831-8802
28 Vdc 26 – 36 452D377G02 5925-00-831-8806
115 Vac 90 – 130 452D377G02 5925-00-831-8806
120 Vdc 70 – 140 452D377G03 5925-00-840-1790
450 Vac 360 – 500 452D377G03 5925-00-840-1790
120 Vdc 70 – 140 452D377G04 5925-00-831-8807
450 Vac 360 – 500 452D377G04 5925-00-831-8807
28 Vdc 26 – 36 452D377G05 5925-00-831-8808
115 Vac 90 – 130 452D377G05 5925-00-831-8808
28 Vdc 26 – 36 452D377G06 5925-00-831-8809
115 Vac 90 – 130 452D377G06 5925-00-831-8809
120 Vdc 70 – 140 452D377G07 5925-01-007-5836
450 Vac 360 – 500 452D377G07 5925-01-007-5836
120 Vdc 70 – 140 452D377G08 5925-00-831-8812
450 Vac 360 – 500 452D377G08 5925-00-831-8812
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 53
Undervoltage Device
Automatically trips breaker when
line voltage drops below 40 to
60% of normal. After undervolt-
age coil has dropped out and
tripped breaker on reduced
voltage, it automatically resets
by breaker action. (If undervolt-
age coil is energized to 80% of
normal). Select device from table
to the right. Net weight, 1.12 lbs.
(0.5 kg).
Individual Reproductions
When required, reproduction of
master drawings, outline draw-
ings and certification sheets can
be ordered as follows:
Drawings Available
Master drawing 900-J-376;
front and rear connected breaker
outline, drilling and wiring
diagram 452-D-834.
For ordering information,
see Page 5.
UNDERVOLTAGE DEVICE PRODUCT SELECTION
You can’t mount a UVR and shunt
trip in same breaker; UVR right
pole only.
INDIVIDUAL REPRODUCTIONS PRODUCT SELECTION
NOMINAL
VOLTAGE
VOLTAGE
RANGE
PICKUP AND
SEAL VOLTS
(MINIMUM)
DROPCUT
VOLTAGE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
450 ac, 60 Cycle 360 – 500 360 290 Maximum 452D837G01 5925-00-920-3099
450 ac, 60 Cycle 360 – 500 360 45 Minimum 452D837G01 5925-00-920-3099
250 dc 175 – 355 150 25 Minimum 452D837G02 5950-00-501-2065
33 dc 30 – 36 22 5 Minimum 452D837G03 5950-00-790-4869
115 Vac 90 – 135 90 80 Maximum 452D837G04 5925-01-385-2027
ITEM DESCRIPTION
1 Full Size Photolithic Tracing of Master Drawing on Vellum
2 Outline and Drilling Plan on Vellum
3 Certification Data on Vellum
4 Reproductions of Items 1, 2 or 3
54 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A250,
NQB-A250
Outline Dimensions
AQB-A250 Breaker —
Dimensions in Inches
Note:
The auxiliary switch must be
used with each shunt trip. Con-
nect one side of shunt trip in
series with “A” contact (Closed
when breaker is closed) of auxil-
iary switch when connecting to
power supply.
FRONT CONNECTED SOLDERLESS TERMINALS IDENTIFICATION
Note: Front Connected
Terminals are not Supplied
with Circuit Breaker.
1
°
T
ri
pp
e
d
3-9/1
6
1-1
/2
25
/
3
2
8-1
/4
4-1
/8
7-5
/8
3-13
/
1
6
9
/
1
6
1/4
5-15
/
1
6
11
5-1
/
1
6
4-1
/2
3-1
/4
5-3
/8
9
/
1
6
1
/4
1/
4
5
/
1
6
4-7
/
1
6
8-7
/8
5
/
1
6
25
/
3
2
5
/8
C
A
C
L
CC
B
5
/8
o
f Br
ea
k
er
C
L
C
C
Fr
am
e
Name
p
lat
e
Visible Ampere Ratin
g
Interchan
g
eable Trip Uni
t
W
arnin
g
Name
p
lat
e
1-7
/8
2-7
/
1
6
1-7
/
3
2
1
/
4-20
Mt
g
.
Sc
r
e
w
s
2-5
/
1
6
7
4-13
/
1
6
4-9
/
1
6
4-7
/
1
6
3-1
/
1
6
1
-5
/8
1-3
/
3
2
2-1
/8
5-3
/8
9-7
/8
4-1
/2
3-1
/
3
2
4-21
/
3
2
11/1
6
4-5
/8
1-15/1
6
1-3
/
3
2
1
/4
19-1
/2
°
On
Rese
t
1
5
°
C
l
osed
11-1
/2
°
1-11
/
1
6
Fr
o
n
t
S
h
eet
1
/4
4-7
/
8
R
.
098
Di
a
H
o
l
e
in H
a
n
d
l
e
Front Face of Mountin
g
Sheet or Channe
l
Su
pp
ort Blocks Are Not Su
pp
lied With Breaker,
But Must Be Ordered Separately. Refer to Drawin
g
313C680.
All Parts Necessar
y
to Convert a Breaker Are Include
d
See Wirin
g
Dia
g
ram and Drillin
g
Pla
n
4 Nuts and 1 Washer Su
pp
lied with Stu
d
1
/
2-13
Th
d.
3
/
8-16 Stu
d
Lin
e
En
d
L
oad
E
n
d
3
/
8-16 Stu
d
o
f
H
a
n
d
l
e
3
/
8-16 Th
d
.
Fl
at
W
ashers
,
a
n
d
N
ut
s
T
erminal
T
T
Mountin
g
Blocks Ar
e
o
n
3
"
Ce
n
te
r
s.
Fr
o
n
t
Co
nn
ect
i
on
s
Are on 2-3
/
4 Center
s
3
3
11-5
/
1
6
1-9
/
1
6
1
/
1
6
1-5
/
1
6
1" Di
a.
1
1-5
/
3
2
1-23
/
3
2
1-13
/
3
2
Lin
e
E
n
d
L
oad
En
d
2-3
/4
2-3
/4
Fr
o
n
t
Co
nn
ected
Solderless T
erminals
T
T
CABLE RANGE MCM
ABC
STYLE
NUMBERMAXIMUM MINIMUM
75 50 12-11/16 6-25/32 5-29/32 20B3055H14
125 100 13 6-15/16 6-1/16 20B3055H15
200 150 13-5/16 7-3/32 6-7/32 20B3055H16
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 55
Outline Dimensions
AQB-A250 Breaker —
Dimensions in Inches
Handle Locking Device
(Not Supplied with Circuit
Breaker)
Wiring Diagrams
DRILLING PLAN FOR TERMINAL MOUNTING BLOCKS FRONT SHEET DRILLING TEMPLATE
Note:
The auxiliary switch must be
used with each shunt trip.
Connect one side of shunt trip in
series with “A” contact (Closed
when breaker is closed) of auxil-
iary switch when connecting to
power supply.
T
o
p
r
ea
k
er
Stud
C
L
C
C
of
B
r
ea
k
er
9
/
1
6
1
/
1
6
13
/
1
6
9-1
/8
T
op of Mtg. Bloc
T
T
k
7
/
16 Dia. 4 Hole
s
T
op of Breaker
TT
3
1
/
1
6
6
8-3
/8
4-3
/
1
6
9-7
/8
9
/
1
6
L
e
f
t
H
a
n
d
S
i
de
o
f Br
ea
k
er
3
/
8 Diameter . 2 Holes for
Undervolta
g
e Release Shunt Trip
or Auxiliar
y
Switch Leads. Hole
to
be
Drill
ed
in
S
wi
tc
h
boa
r
d
Breaker Su
pp
or
t
13
/
1
6
R
eco
mm
e
n
ded
Minim
um
D
i
sta
n
ce
B
et
w
ee
n
U
ni
ts
Lin
e
E
n
d
L
oad
En
d
B
otto
m
of
B
r
ea
k
er
1-3
/
8 Dia. 6 Hole
s
L
e
f
t
H
a
n
d
S
i
de
of
Br
ea
k
er
C
C
L
L
C
C
CC
T
op of Breaker
T
T
C
L
CC
3
2-3
/4
1-1
/2
2-13
/
1
6
B
k
r.
2-5
/8
1
/4
R
9
/
1
6
6
3
7-1
/8
5
/
16 Dia. 3 Hole
s
for Megger T
est
T
T
1-1/8
3
B
otto
m
of
Mt
g
. Bloc
k
5-1
/4
On
O
f
f
Wh
e
n
U
n
de
r
V
olta
ge
R
e
l
ease
i
s
Pr
o
vi
ded
Wh
e
n
S
h
u
n
t
T
ri
p
and Auxiliar
y
S
wi
tc
h i
s
Pr
o
vi
ded
S
h
u
n
t
T
ri
p
2
Leads 18" Lon
g
A and B Auxiliar
y
S
wi
tc
h
3
L
eads
18" Lon
g
Undervolta
ge
R
e
l
ease
2
Leads 18" Lon
g
Lin
e
En
d
L
oad
En
d
Lin
e
En
d
d
A
QB
N
QB
56 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A250,
NQB-A250
Motor Operator On Navy —
Type AQB-A250 and NQB-
A250 Molded Case Circuit
Breakers
AQB-A250 on Left With Handle
Extension and Unmounted Motor
Operator on Right
The motor operator is a mecha-
nism for remote circuit breaker
ON and OFF switching. The
motor operator is mounted to
the circuit breaker and provides
high speed switching with
operating times of approximately
14 cycles (235 milliseconds).
Motor operators for use on the
AQB-A250 and NQB-A250 circuit
breakers are rated at 115 Vac,
60 Hz, and require a minimum
1 kVA power source. In addition,
all motor operators are equipped
with an Auto-Reset feature as
standard.
The motor operator is designed
to remotely switch a circuit
breaker to its ON, OFF and
relatch positions. The relatch
(Auto-Reset) function will occur
automatically after a circuit
breaker trip operation. The motor
operator is self contained and
assembled in its own mounting
frame which mounts on the front
of the circuit breaker. When the
ON or OFF remote control but-
ton is pressed, current flows to
the electric motor which turns a
ball bearing and screw assembly
driving the carrier and roller
assembly. Two rollers fit over the
circuit breaker handle and move
with the handle through its range
of movement. Limit switches
control the travel of the carrier
assembly. A terminal block is
provided in the mounting frame
for control connections. A “b”
contact auxiliary switch is
provided for installation in the
breaker for the Auto-Reset
function.
If 450 Vac required, then customer
should supply own minimum
1 kVA step-down transformer per
motor operator.
Net Weight, Lbs. (kg)
Motor Operator 18.00 (8.2).
VOLTAGE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
115 Vac 6590C87G01 6105-01-431-5680
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 57
Outline Dimensions
AQB-A250 or NQB-A250
Circuit Breaker and Motor
Operator — Dimensions
in Inches
8
.2
5
(
Breaker
)
C
L
C
C
C
L
C
C
.2
5
Br
ea
k
er
Mountin
g
Bl
oc
k
s
Br
ea
k
e
r
Out
lin
e
H
a
n
d
l
e
1.
68
Motor O
p
erator
Name
p
lat
e
.2
5
11.
00
4.44
11.
00
R
e
f
.
On
O
Of
f
Rese
t
Tri
pp
e
d
2-1
/8
1
9
.
5º
1
5º
11.
5º
1º
8.46R
.1
9
8
.1
8
1
0
.
58
Fr
o
n
t
S
h
eet
8
.
88
8
.
31
1.
50
Front
S
h
eet
58 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A250,
NQB-A250
Motor Operator
Identification
115 Vac Motor Operator:
6590C87G01.
MOTOR OPERATOR INSTALLED WITH FRONT COVER REMOVED
MOTOR OPERATOR WIRING DIAGRAM
Motor
Handle Extension
Pan Head
Mounting Screw
On and Relay
Control Limit
Switches
Terminal Block
Off Limit Switch
Yellow
(
On
)
M
otor
Bl
ack
Red
(
Off
)
COM
N
C
Rela
y
Control LS
3
O
n
S
wi
tc
h L
S1
COM
N
C
O
n
S
wi
tc
h L
S2
N
O
T
e
rm Bl
oc
k
Le
g
en
d
1
=
1
3
= Lin
e
4 =
O
f
f
6
=
On
COM
N
C
N
O
Rela
y
Soc
k
et
1
2
3
4
5
6
6
7
8
9
9
A
B
T
e
rmin
a
l
Bl
oc
k
s
1
3
5
7
9
Breaker O
p
en
Indicator Li
g
h
t
L
R
e
m
ote
S
wi
tc
h
es
(Momentar
y)
ON
O
F
F
CO
M B
2
Aux Sw
U
V
R
Br
ea
k
er
If A
pp
licabl
e
4
50
V
ac
11
5
V
ac
Ex
te
rn
a
l P
o
w
er
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 59
Characteristic Time-Current
Curves
Specification MIL-C-17361
This specification covers all
thermal-magnetic AQB breakers.
It requires that they carry 150%
of current ratings for at least one
hour and that thermal elements
initiate tripping at 225% rated
current within one hour and at
600% in 25 seconds plus or
minus 25%. The instantaneous
magnetic settings for each
continuous ratings are based on
intended applications. (Thermal
tripping tests are conducted with
all poles in series in 50°C ambi-
ent; each pole is tested individu-
ally to check magnetic settings.)
AQB-A250
Operating Characteristics
Trip Unit Rating 125 – 250
Amperes 50°C Ambient —
Cold Start, 60 Cycle, ac or dc.
AQB-A250 GENERATOR BREAKER
Operating Characteristics
Trip Units, Types 100NGH,
160NGH, 250NGH, 100NG,
160NG and 250NG for use with
generator circuit breakers 50°C
ambient — Cold Start, ac or dc.
400 CYCLE BREAKERS
Operating Characteristics
Trip Unit Rating 125 – 250
Amperes 50°C Ambient —
Cold Start, 400 Cycle ac.
Trip Unit Rating
To determine the trip unit rating
to be used, when the load cur-
rent and ambient are known,
multiply the load current by the
factor obtained from this curve
for the known ambient. The
result will be the ideal trip unit
rating. However, since trip units
are furnished only with standard
ratings as per Navy spec., select
the standard trip unit whose
rating is equal to or one rating
higher than the ideal rating.
Hou
r
s
3
200
M
in
utes
Seco
n
d
s
Ti
me
C
y
cles
2
1
50
30
2
0
1
0
8
6
4
3
2
1
4
0
2
0
1
0
8
6
4
3
2
1
4
0
2
0
1
0
7
5
3
2
1
.
8
.
6
.
5
150
100
30
,
000
2
0
,
000
15
,
000
10
,
000
6,
000
4,
000
3
,
000
2,
000
1,
500
300
400
500
600
800
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
M
M
inim
um
M
a
xim
um
±
25%
±
P
t
R
at
i
n
g
ripping
m
e
60
0
22
5
1
50
Hou
r
s
3
200
M
in
utes
Seco
n
d
s
Ti
me
Cy
cle
s
2
1
50
30
2
0
1
0
8
6
4
3
2
1
4
0
2
0
1
0
8
6
4
3
2
1
4
0
2
0
1
0
7
5
3
2
1
.
8
.
6
.
5
150
100
30,000
2
0
,
000
1
5
,
000
1
0
,
000
6,
000
4,
000
3
,
000
2,
000
1,
500
300
400
500
600
800
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
M
M
inim
um
M
a
xim
um
1
to
2 Min
.
5
to
1
5
Min.
2
0
Min.
o
r M
or
e
P
e
r
ce
n
t
of
t
R
at
i
n
g
T
ripping
TT
Ti
m
e
300
2
00
1
50
Hou
r
s
Ti
m
e, Minutes
Seco
n
ds
30
4
3
2
1
50
4
0
2
0
1
0
4
3
2
1
5
30
4
0
2
0
1
0
4
3
2
1
5
0
0
0
100
200
300
400
600
800
1000
1500
2000
3000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
90
80
7
0
60
50
4
0
30
2
0
1
0
0
0
0
.
5
1.
0
1.
5
2.
0
2.
5
3
.
0
3
.
5
4.
0
4.
5
F
actor
A
m
b
i
e
n
t
Te
mp
erature, °
C
60 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-LF100,
AQB-LF250
Circuit Breakers for
Naval Shipboard Use
Types AQB-LF100,
AQB-LF250 Breakers
Type AQB-LF100, 100 Amperes
Maximum, Type AQB-LF250,
250 Amperes Maximum, 500
Volts ac, 100,000 Amperes I.C.
AQB-LF100 Fused Navy Circuit Breaker
AQB-LF250 Fused Navy Circuit Breaker
Note:
AQB-LF100 breakers are sold for
replacement only. They are no
longer on the Navy Qualified
Product List.
Application
AQB-LF100 and AQB-LF250
circuit breakers are for use in
low-voltage distribution systems
where available fault current
exceeds the interrupting ratings
of standard molded case break-
ers but does not exceed 100,000
amperes.
Like standard Navy breakers,
they are designed for use in
switchboards, loadcenters and
panelboards.
AQB-LF circuit breakers are avail-
able in three-pole design and for
rear connection only.
Description
These breakers are essentially
standard Navy circuit breakers
incorporating current limiting
fuses in one compact device.
The fuses are mounted in a
removable molded housing
which plugs into and becomes
an integral part of the breaker.
Fuses are easily replaced from
the front simply by loosening
four screws and pulling out the
fuse housing.
An interlock prevents the breaker
from being closed if any of the
three fuses are blown and the
fuse housing is designed so that
all three fuses must be unblown
before the housing can be
mounted in its correct position
on the breaker. Removal of the
fuse housing automatically
opens breaker and provides
visual assurance that the circuit
is disconnected.
Operation
The thermal-magnetic trip unit of
the standard breaker provides
protection on overloads and
short circuits below a predeter-
mined value without affecting
the fuses. However, these spe-
cially coordinated fuses assume
the fault clearing duty on high
magnitude short circuits and
extend the interrupting capacity
to 100,000 amperes.
The common trip feature of the
circuit breaker is retained so that
all poles open when any fuse
blows. Fast acting current limit-
ing fuses clear short circuits in
less than one-half cycle. Conse-
quently, peak let-through cur-
rents are greatly reduced and
bus-supporting members or cur-
rent carrying parts do not have to
be designed to meet maximum
peak current.
Fuse
Trip
Lever
Instantaneous
Trip Adjusting
Wheels
Slide Type
Connectors
for Fuse
Contacts
Fuse
Housing
Interlock
Fuse Plug-In
Contacts
Fuse Housing
Unit Removed
Current
Limiting Fuses
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 61
AQB-LF100 Fused Breaker
Specification: MIL-C-17361
●15 – 100 Amperes, 500 Volts
ac, 60 Cycles, 3-Pole
Interrupting Rating
●100,000 Amperes
Note:
AQB-LF100 breakers are sold
for replacement only. They are
no longer on Navy Qualified
Product List.
AQB-LF100 breakers are
designed for the same applica-
tion as the AQB-A100 (non-
fused) circuit breaker except that
they may be applied on circuits
where fault currents up to
100,000 amperes are available.
Breakers designated by the
suffix “DF” in the table have set-
tings designed for the protection
of feeder circuits and those
followed by “D” have higher
magnetic settings to allow for
motor starting.
AQB-LF100 FUSED BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Breaker frame consists of frame
with its fuse housing unit and slip-
type connectors for back connec-
tion, but does not include trip unit,
fuses or mounting blocks. Order
these separately, trip units and
fuses from table above and mount-
ing blocks from listings below.
National stock number as follows:
313C743H02 = 5920-00-628-7792
313C743H03 = 5920-00-628-7793
Switchboard Mounting
Breaker frame includes mount-
ing hardware. Female slip con-
nectors are mounted on the rear
for plugging onto stud projec-
tions of terminal mounting block
assemblies. Order one for each
end of the breaker.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS
TRIP SETTING —
AMPERES
BREAKER
COMPLETE
BREAKER
FRAME TRIP UNIT FUSES
STYLE
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
QUANTITY
REQUIREDLOW HIGH
3-Pole 500 Volts ac
15-DF 90 105 452D391G16 452D390G02 5925-00-617-8312 452D385G13 5925-00-849-8481 313C743H02 3
15-D 180 210 452D391G17 452D390G02 5925-00-617-8312 452D384G13 5925-00-655-1156 313C743H02 3
25-DF 180 210 452D391G18 452D390G02 5925-00-617-8312 452D385G15 5925-00-655-1157 313C743H02 3
25-D 300 350 452D391G19 452D390G02 5925-00-617-8312 452D384G15 5925-00-655-1158 313C743H02 3
50-DF 300 350 452D391G20 452D390G02 5925-00-617-8312 452D385G17 5925-00-655-1159 313C743H03 3
50-D 600 700 452D391G21 452D390G02 5925-00-617-8312 452D384G17 5925-00-655-1160 313C743H03 3
75-DF 450 525 452D391G22 452D390G02 5925-00-617-8312 452D385G20 5925-00-655-1161 313C743H03 3
75-D 900 1050 452D391G23 452D390G02 5925-00-617-8312 452D384G20 5925-00-655-1162 313C743H03 3
100-DF 600 700 452D391G24 452D390G02 5925-00-617-8312 452D385G23 5925-00-655-1163 313C743H03 3
100-D 1200 1400 452D391G25 452D390G02 5925-00-617-8312 452D384G23 5925-00-655-1164 313C743H03 3
DESCRIPTION STYLE NUMBER NATIONAL STOCK NUMBER
One Stud Assembly Complete with 4 Nuts 1631 442 5940-00-501-9120
Terminal Mounting Block (No Studs) 1764 240 —
Mounting Block and Stud Set (3 Studs) 01A4457G23 —
62 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-LF100,
AQB-LF250
AQB-LF100 Fused Breaker
Additions
Individual Reproductions
When required, reproductions of
master drawings, outline draw-
ings and certification sheets can
be ordered as follows:
Drawings Available
Master drawing 900J377; outline
drilling plan and wiring diagram
451D711.
Handle Lock (For Shipboard
Maintenance Use Only)
Order style number 1614 485.
Fungus-Moisture-Resistant
Treatments (JAN-T-152;
JAN-C-173 or MIL-V-173)
If specified, contact Eaton.
External parts are coated; trip
units are not treated.
ITEM DESCRIPTION
1 Full Size Photolithic Tracing of
Master Drawing on Vellum
2 Outline and Drilling Plan
on Vellum
3 Certification Data on Vellum
4 Reproduction of Items 1, 2
or 3
Technical Manual
Cutler-Hammer NAVSHIPS
number 362-2166. This booklet
per MIL-M-15071. When
required, order BVR-TM-380.
FUSE HOUSING UNIT
(NO FUSES)
NET WEIGHT
STYLE
NUMBER
NATIONAL
STOCK NUMBER
313C742G01 6605-00-799-3521
DESCRIPTION
NET WEIGHT,
LBS. (KG)
AQB Breaker Complete 3-Pole 13.62 (6.2)
AQB Breaker Frame Only Complete
With Fuse Unit Assembly
Without Fuses
9.68 (4.4)
Trip Unit 3-Pole 2.62 (1.2)
Fuse Unit Assembly Without Fuses 1.62 (0.7)
One Mounting Block With 3 Studs 1.62 (0.7)
Current Limiting Fuse 0.45 (0.2)
Circuit Breaker Handle Locking Device 0.25 (0.1)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 63
AQB-LF250 Fused Breaker
Specification: MIL-C-17361
●125 – 250 amperes, 500 volts
ac, 60 cycles, 3-pole.
Interrupting Rating
●100,000 amperes.
These fused breakers are
designed for applications similar
to those for AQB-A250 (non-
fused). However, because of
their current limiting fuses, they
can be applied on circuits with
available fault currents up to
100,000 amperes.
Undervoltage release devices,
shunt trips and/or auxiliary
switches are available for the
AQB-LF250 and can be easily
installed in the field.
Those breakers identified by the
suffix “LM” in the table have
higher magnetic settings for
motor starting while those carry-
ing the suffix “L” are set for the
protection of feeder circuits
AQB-LF100 AND AQB-LF250 CIRCUIT BREAKER PRODUCTION SELECTION
For list prices, see Price and
Availability Digest (PAD).
Breaker frame consists of frame
with its fuse housing unit and slip-
type connector for back connec-
tion, but does not include trip unit,
fuses or mounting blocks. Order
these separately, trip units from
table above and mounting blocks
from listings above.
National stock number 5920-01-
295-0107.
Switchboard Mounting
Breaker frame includes mount-
ing hardware. Female slip con-
nectors are mounted on the rear
for plugging onto stud projec-
tions of terminal mounting block
assemblies. Order one for each
end of the breaker.
CONTINUOUS
AMPERE
RATING
INSTANTANEOUS
TRIP SETTING —
AMPERES
BREAKER COMPLETE BREAKER FRAME TRIP UNIT FUSES
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
QUANTITY
REQUIREDLOW HIGH
3-Pole 500 Volts ac (Refer to Eaton for 2-Pole Styles and Prices)
125-L 650 1300 313C748G18
5925-01-360-8673
452D820G02
5925-00-617-8313
452D821G18
5925-00-655-1165
313C743H04 3
125-LM 1500 3000 313C748G19
5925-01-233-5623
452D820G02
5925-00-617-8313
452D821G19
5925-00-655-1166
313C743H04 3
150-L 650 1300 313C748G20
5925-00-998-1960
452D820G02
5925-00-617-8313
452D821G20
5925-00-655-1167
313C743H04 3
150-LM 1500 3000 313C748G21
5925-01-229-4444
452D820G02
5925-00-617-8313
452D821G21
5925-00-655-1168
313C743H04 3
175-L 650 1300 313C748G22
5925-01-189-9250
452D820G02
5925-00-617-8313
452D821G22
5925-00-655-1169
313C743H04 3
175-LM 1500 3000 313C748G23
5925-01-507-2391
452D820G02
5925-00-617-8313
452D821G23
5925-00-655-1170
313C743H04 3
225-L 650 1300 313C748G24
5925-01-233-5173
452D820G02
5925-00-617-8313
452D821G24
5925-00-655-1171
313C743H04 3
225-LM 1500 3000 313C748G25
5925-01-378-1838
452D820G02
5925-00-617-8313
452D821G25
5925-00-655-1172
313C743H04 3
250-L 650 1300 313C748G26
5925-01-243-1611
452D820G02
5925-00-617-8313
452D821G26
5925-00-655-1174
313C743H04 3
250-LM 1500 3000 313C748G27
5925-01-434-3687
452D820G02
5925-00-617-8313
452D821G27
5925-00-655-1173
313C743H04 3
Net Weight 32.00 Lbs. (14.5 kg) Net Weight 24.50 Lbs. (11.1 kg) Net Weight 3.00 Lbs. (1.4 kg) Net Weight 1.50 Lbs. (0.7 kg)
DESCRIPTION STYLE NUMBER NATIONAL STOCK NUMBER
One Stud Assembly Complete with 4 Nuts 1631 443 5940-00-501-9119
Terminal Mounting Block (No Studs) 313C681G01 2920-01-354-4811
Mounting Block and Stud Set (3 Studs) 313C680G02 5940-01-146-6806
64 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-LF100,
AQB-LF250
Additions
Individual Reproductions
When required, reproductions of
master drawings, outline draw-
ings and certification sheets can
be ordered as follows:
Drawings Available
Master drawing 900-J-379;
breaker outline, drilling plan and
wiring diagram 451D250.
Handle Lock (For Shipboard
Maintenance Use Only)
Order style number
28B4596G01.
Auxiliary Switch
For description, see AQB-A250
breaker Page 52. Style number
452D379G02 same as for
AQB-A250. Net weight .17 lbs.
(0.08 kg).
Shunt Trip Attachment
To order refer to AQB-A250
breaker on Page 52. Style num-
bers and net prices are same as
those for AQB-A250. Net weight
.70 lbs. (0.3 kg).
ITEM DESCRIPTION
1 Full Size Photolithic Tracing of
Master Drawing on Vellum
2 Outline and Drilling Plan
on Vellum
3 Certification Data on Vellum
4 Reproduction of Items 1, 2
or 3
Undervoltage Device
To order, refer to AQB-A250
breaker on Page 52. Style num-
bers and list prices are same as
those for AQB-A250. Net weight
1.12 lbs. (0.5 kg).
Technical Manual
NAVSHIPS number 362-2165.
This booklet per MIL-M-15071.
When required, order BVR-TM-
381.
FUSE HOUSING UNIT (NO FUSES)
Ordering Information
See Page 5.
Net Weights
See table above.
STYLE
NUMBER
NATIONAL
STOCK NUMBER
NET WEIGHT,
LBS. (KG)
452D832G01 5920-01-218-3803 4.50 (2.0)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 65
Outline Dimensions
AQB-LF100 Breakers —
Dimensions in Inches
Slip Contact Assembly
C
L
C
C
4-15
/
1
6
2-15
/
3
2
4-21
/
3
2
1-5
/8
1-5
/8
F
o
r 2-P
o
l
e
Br
ea
k
er
Current Carr
y
i
n
g
P
a
r
ts
Ar
e
O
mi
tted
fr
o
m
Ce
n
te
r P
o
l
e
10-1
/
6
4
5-43/6
4
3 Megger Hole
s
5
/
16 Diamete
r
5-1
/
6
4
Br
ea
k
er
2-3
/8
13
/
1
6
1
0-5
/
32
V
isible Amp. Ratin
g
Interchan
g
eabl
e
T
ri
p
Uni
t
5
/8
4-3
/4
1-5/
8
1-5/
8
13
/
1
6
1/4-20 Mt
g.
Sc
r
ew
s
(Ca
p
tive
)
10
8
-3
/
4
3-7
/
8
4
-9
/
16
3-1
/
2
2
-11/16
2
-3
/
32
5
/8
1/4-20 4 Mt
g
. Bolts Supplie
d
wi
t
h Br
ea
k
er
. B
o
l
ts
Extend 5
/
8 Below Botto
m
o
f Br
ea
k
er
5
/
6
4
2-5
/
1
6
5
2-1
/2
1-1
/4
13
/
1
6
1-5
/8
1-1/
4
13
/
1
6
O
n
O
f
f
15-1
/2
°
7
°
T
ri
pp
e
d
7-1
/2
°
.
098
Di
a
. H
o
l
e
3-1
/4
2-5
/8
Fr
o
n
t
S
h
eet
1-39
/
6
4
3-31
/
6
4
2-3
/
1
6
5
/
6
4
1
/
1
6
4 N
uts
a
n
d
1
W
as
h
er
Su
pp
lied with Stu
d
15
/
1
6
3
/
8-16 Th
d
.
5
/
16-18 Thd.
1
/
8 Min
.
2-27
/
32
R
4-9
/
1
6
Flat Washers
,
L
oc
k W
as
h
e
r
s
a
n
d
N
uts
Su
pp
lied
wi
t
h T
e
rmin
a
l
Mt
g
. Bloc
k
8-3
/4
4-3
/
1
6
3
/
4 Dia
.
15
/
1
6
5
/8
45
/
6
4
Mt
g
. Shee
t
4-3
/4
4-1
/4
4-11
/
3
2
3-15
/
1
6
Su
pp
ort Blocks are Not Su
pp
lied
with Breaker
,
but Must be Ordered
Separately, Refer to Dw
g
. 1A4457
All Parts Necessar
y
to Convert a
Br
ea
k
e
r
a
r
e
In
c
l
uded
1-29
/
3
2
C
C
L
C
C
Lin
e
En
d
L
oad
En
d
66 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-LF100,
AQB-LF250
Typical Wiring Diagram
Wiring as Shown for 3-Pole
Breaker. For 2-Pole Breaker Omit
Middle Pole.
Drilling Plans and Cutout
For Terminal Mounting Blocks
Front Sheet Drilling Template.
Circuit Breaker Handle
Locking Device
DRILLING PLANS FRONT COVER CUTOUT
Lin
e
En
d
R
e
m
o
v
ab
l
e
F
use
Unit Assembl
y
L
oad
En
d
R
e
m
o
v
ab
l
e
Tri
p
Uni
t
C
L
C
C
Minim
u
m Di
sta
n
ce
B
et
w
ee
n
U
ni
ts
Lin
e
E
n
d
C
C
L
CC
C
C
L
L
C
C
C
C
C
C
L
L
C
C
CC
5-1
/8
T
o
p
of Breake
r
15
/
1
6
Studs
9
/
16 R Min
.
1-5
/8
3-1
/4
H
a
n
d
l
e
7
/
16 Dia
.
(
4 Holes
)
15
/
1
6
9
/
16 R Min
.
1-1
/
8 Minimum Slo
t
5
/8
B
r
ea
k
er
Studs
Lin
e
En
d
L
oad
E
n
d
4-3
/
1
6
8-3
/4
3-7
/
16
p
T
op of Breaker
TT
2-1
/4
1-5
/8
1
/4
R
3
r
ea
k
er
2-1
/2
5
4-13
/
1
6
8
1
/4
R
Lin
e
En
d
L
oad
En
d
1-1
/2
On
O
f
f
R
e
v
e
r
se
P
os
i
t
i
o
n
o
f L
oc
k
to
Pr
e
v
en
t
B
reaker from Openin
g
(Not Su
pp
lied with
Circuit Breaker
)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 67
Outline Dimensions
AQB-LF250 Breakers —
Dimensions in Inches
Typical Wiring Diagram
WIRING AS SHOWN FOR 3-POLE
BREAKER; FOR 2-POLE BREAKER,
OMIT MIDDLE POLE
WHEN UNDERVOLTAGE
RELEASE IS PROVIDED
WHEN SHUNT TRIP AND
AUXILIARY SWITCH IS
PROVIDED
4-7
/
1
6
8-1
/4
3
9-3
/
4
4
-1
/
4
5
-1
/
2
1/64
5
/
1
6
1
-7
/
8
3-9
/
16
2-3
/
1
6
4
-7
/
8
7-1
/
8
12
1
/4
2-7
/
1
6
1-1
/2
2-3
/4
1-19/3
2
Warnin
g
Name
p
lat
e
1/4-20 Mtg.
Sc
r
e
w
s
8
4
1
1-23
/
32
Fr
a
m
e
Name
p
lat
e
Visible Am
p
Ratin
g
Inter
chan
g
eable
Tri
p
Uni
t
1/4-20 Mt
g
.
Sc
r
e
w
s
f
o
r
Bk
r.
F
o
r
A
ccess
R
e
m
o
v
e
5
/
16 Diameter
3
H
o
l
es
f
o
r
Me
gg
er Test
s
7
-1
/
16
4
-21
/
32
3
6
3
/
8-16 Th
d
.
Flat Washers
,
Lockwashers
and Nuts Su
pp
lied with Terminal
Mountin
g
Block
s
8-7
/8
3
5-1
/2
.
098
Di
a
. H
o
l
e
in H
a
n
d
l
e
11
/
1
6
C
L
C
C
4-9
/
1
6
3-1
/
1
6
2-5
/
1
6
1/2-13 Thd
.
Lin
e
E
n
d
On
19-1
/2
°
1
°
ripped
°
1
5
Of
f
3
/
32
R
4-7
/8
R
2-1
/8
1
/
1
6
Fr
o
n
t
S
h
eet
L
oad
E
n
d
4-5
/8
4-3
/8
1
/8
R
1
/
1
6
4-5/
8
11-23
/
3
2
8
1-5
/8
5
/
1
6
5-9
/
1
6
1-5
/
3
2
1/2-13 Thd
.
H
9-7
/8
4-5
/
1
6
1
Front Face of Mtg.
S
h
eet
o
r
C
h
a
nn
el
4 N
uts
a
n
d
1 W
as
h
e
r
Su
pp
lied with Stu
d
Su
pp
ort Blocks
Are Not Supplied
with Breaker
,
But
M
ust
B
e
O
r
de
r
ed
Se
p
aratel
y
. Refer
to Dw
g
. 313C680.
All Parts Necessar
y
to
Co
nv
e
r
t
a
Bkr.
Ar
e
In
c
l
uded
7
R
e
m
o
v
ab
l
e
Tri
p
Uni
t
R
e
m
o
v
ab
l
e
F
use
U
ni
t
Ass
y.
Lin
e
En
d
L
oad
En
d
A
Q
B Br
ea
k
e
r
with Overcurrent
,
Short Circuit Trip
a
n
d
F
uses
Undervolta
g
e Releas
e
2 Leads 18" Lon
g
A
a
n
d
B A
u
x.
S
wi
tc
h
3
L
eads
18" Lon
g
Shunt Tri
p
2 L
eads
18" Lon
g
68 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-LF100,
AQB-LF250
Outline Dimensions
AQB-LF250 Breakers —
Dimensions in Inches
Drilling Plans
For Terminal Mounting Blocks
Front Sheet Drilling Template.
Handle Locking Device
(Not Supplied With Circuit
Breaker.)
FOR TERMINAL MOUNTING BLOCKS FRONT SHEET DRILLING TEMPLATE
Note:
The auxiliary switch must be
used with each shunt trip, con-
nect one side of shunt trip in
series with “A” contact (closed
when breaker is closed) of auxil-
iary switch when connecting to
power supply.
13
/
1
6
1
/
1
6
9-1
/8
Lin
e
En
d
9
/
1
6
4-7
/8
5-1
/4
4
-5
/
16
5-9
/
1
6
3
/
8 Dia
.
2 H
o
l
es
L.H.
S
i
de
o
f Br
ea
k
er
13
/
1
6
Bottom o
f
M
t
g
. Blo
c
k
4-1
/8
4-3
/
1
6
1
/
1
6
3
6
B
otto
m
o
f Br
ea
k
er
L
oad
En
d
1-3
/
8 Dia. 6 Hole
s
R.H.
S
i
de
o
f Br
ea
k
er
B
r
ea
k
er
3
1-1
/2
T
op of Mounting Bloc
TT
k
T
op of Breaker
TT
R
d
M
Undervoltage Release
t
or Shunt T
rip and Aux
T
T
.
S
wi
tc
h L
ead
H
o
l
es
to
be
B
reaker Suppor
t
r
r
C
C
L
C
C
C
C
B
r
ea
k
er
T
T
k
C
C
L
C
C
H
a
n
d
l
e
T
o
p
of Breake
r
9
/
1
6
1
/4
T
op Bk
T
T
r.
Stud
1
/4
R
3
1-1
/2
2-3
/
1
6
2-3
/4
4
-7
/
8
C
L
C
C
9
/
3
2
1
/4
2-1
/8
4
-1
/
2
9-1
/
2
5
1
/4
8-1
/4
4-1
/8
1
2-1/4
7
-3
/
8
1
/
1
6
R
7
/
16 Dia
.
4 H
o
l
es
L
L
L
On
O
f
f
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 69
Characteristic Time-Current
Curves AQB-LF100 and
AQB-LF250 Breakers
Trip Unit Rating
To determine the trip unit rating
to be used, when the load cur-
rent and ambient are known,
multiply the load current by the
factor obtained from the curve to
the right for the known ambient.
The result will be the ideal trip
unit rating. However, since trip
units are furnished only with
standard ratings as per Navy
spec., select the standard unit
trip whose rating is equal to
or one rating higher than the
ideal rating.
AQB-LF100 BREAKERS AQB-LF250 BREAKERS
100 300 1,200 10,000 100,000
600 3,000 30,000
Percent Rated Current
10,000
5,000
4,000
3,000
2,000
1,000
500
400
300
200
100
50
40
30
20
10
5
4
3
2
1
.5
.4
.3
.2
.1
.05
.03
.02
.01
AQB - LF 100
Time, Seconds
Operating Characteristics
Thermal Magnetic and Current
Limiting Fuse
50°C Ambient - Cold Start Ac
Instantaneous Trip at
1,200 to 1,400 % Rating
Instantaneous Trip at
600 to 700% Rating
100 Amp.
75 Amp.
50 Amp.
25 Amp.
15 Amp.
25 Seconds ± 25%
Less Than 1 Hour
More Than 1 Hour
Percent of
Trip Element
Rating
Tripping
Time
600
225
150
100 300 1,200 10,000 100,000
600 3,000 30,000
Percent Rated Current
10,000
5,000
4,000
3,000
2,000
1,000
500
400
300
200
100
50
40
30
20
10
5
4
3
2
1
.5
.4
.3
.2
.1
.05
.03
.02
.01
AQB - LF 250
Time, Seconds
Operating Characteristics
Thermal Magnetic and Current
Limiting Fuse 50°C Ambient
Cold Start Ac Instantaneous
Trip Range of 250 Amp. Trip
Unit Shown
650 to 1,300 Amp.
1,500 to 3,000 Amp.
See Table for Instantaneous
Range of Other Trip Unit
250 Amp.
225 Amp.
175 Amp.
150 Amp.
125 Amp.
25 Seconds ± 25%
Less Than 1 Hour
More Than 1 Hour
Percent of
Trip Element
Rating
Tripping
Time
600
225
150
3
.
5
T
e
°
C
01
02
03
04
05
06
07
08
09
0
1
00
3
.
0
2.
5
2.
0
1.
5
1.
0
.
5
0
Facto
r
70 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A253,
AQB-L253 and
NQB-A253
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A253,
AQB-L253, NQB-A253
500 Volts ac, 250 Amperes
Maximum, A253 — 30,000
Amperes I.C. and L253 —
100,000 Amperes I.C. Breakers
Specifications: MIL-C-17361
●100 – 250 amperes, 100%
Rated.
●AQB-A253: 500 volts ac,
60/400 Hz.
●AQB-L253: 500 volts ac,
60 Hz.
●NQB-A253: 500 volts ac,
60/400 Hz.
●No dc.
●Interchangeable Electronic
Trip with rms sensing.
●3-pole.
Interrupting Rating
●AQB-A253: 30,000 amperes,
60 Hz ac.
●10,000 amperes, 400 Hz ac.
●AQB-L253: 100,000 amperes,
60 Hz ac.
●NQB-A253: Non Overcurrent
Protection.
●Class: Hi shock MIL-S-901D,
50ºC ambient.
Description
The AQB-A253, 250 ampere cir-
cuit breaker, is form and fit inter-
changeable with the AQB-A250
but has an electronic trip unit and
higher interrupting capacity. It is
available in a 3-pole, ac current
version only. If used to protect
two ac poles, connect only the
outer poles. It is a universal style
with a common trip unit and
60 Hz and 400 Hz ratings.
The AQB-L253 is a high interrup-
tion version of the AQB–A253 in
the same external package. It
uses fuseless current-limiting
technology to achieve 100 kA
interrupting capacity so it can be
used to replace the AQB-LF250
without the logistic concerns of
fuse replacement. The AQB-
L253 utilizes a smaller package
and offers a significant weight
reduction compared to the
LF250. The -L253 is available in
only a 60 Hz version.
The NQB-A253 circuit breaker
has a maximum continuous
current rating of 250 amperes.
They are used only as discon-
nects, since they do not include
an automatic opening device.
The AQB-A253 and L253 are
supplied with a universal trip unit
that is used in all AQB versions.
The trip unit must be equipped
with an adjustable rating plug
(ordered separately) that deter-
mines the continuous current
rating of the complete circuit
breaker. Two adjustable rating
plugs are available. One covers
the continuous current settings
of 250, 225, 200 and 175
amperes and the other covers
the current settings of 160,150,
125 and 100 amperes.
The interchangeable electronic
trip unit (ETU) has an adjustable
time-current curve with select-
able values of Short Time Delay
Pickup (STDPU) (scaled to the
CCS) and Short Time Delay (STD)
for improved coordination with
upstream or downstream
devices. The trip unit also has an
instantaneous override trip fixed
at 7500 A (30 x frame rating).
The ETU can emulate the trip
curve of the AQB-A250 by set-
ting the STD to INST and using
the STDPU to emulate an adjust-
able INST setting.
Principle of Operation
These circuit breakers are
designed to provide the most
modern form of low voltage cir-
cuit protection technology avail-
able, providing high interruption
ratings and flexible coordination
without the need for current
limiting fuses. The breakers use
modern electromagnetic design
principles to increase the inter-
rupting capacity (IC) to signifi-
cantly higher levels than
comparable AQB-A250 breakers.
The AQB-L253 uses a “reverse
loop” conductor design and
“magnetically unlatched” con-
tact arms to provide very high
interrupting capacity while limit-
ing the let-through current and
limiting the fault duration to a
few milliseconds.
Ordering
The circuit breaker is available in
three styles, an AQB-A253 (stan-
dard IC), an AQB-L253 (high IC)
and an NQB-A253 (non-auto-
matic) switch. The breaker is
completed by adding one of two
styles of rating plugs, one which
covers the continuous current
range from 250 – 175 amperes
and another which covers the
range from 160 – 100 amperes.
An internally mounted auxiliary
switch, a shunt trip and an under-
voltage release are also available.
AQB-A253, AQB-L253
Characteristics
Continuous Current Setting
(4-Position Selector Switch) —
100 – 160 amperes (100,125,
150,160) rating plug
175 – 250 amperes (175, 200,
225, 250) rating plug
Instantaneous Pickup — Fixed
at 30 X Frame rating (7500 A).
Short Delay Pickup — Adjust-
able in multiples of continuous
current settings (2x, 3x, 4x, 6x,
8x, 10x, 12x, 13x).
Short Time Delay — Adjustable
flat response with bands:
●INST (.025 – .050 seconds).
●0.100 seconds
(.058 – .083 seconds).
●0.200 seconds
(.158 – .183 seconds).
●0.300 seconds
(.258 – .283 seconds).
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 71
For list prices, see Price and
Availability Digest (PAD).
FRONT-CONNECTED BREAKER (COMPLETE WITHOUT LUGS)
For list prices, see Price and
Availability Digest (PAD).
FRONT-CONNECTED BREAKER (COMPLETE WITH LUGS)
For list prices, see Price and
Availability Digest (PAD).
AQB-A253, AQB-L253 AND NQB-A253 CIRCUIT BREAKER PRODUCT SELECTION
BREAKER
COMPLETE BREAKER FRAME ONLY TRIP UNIT ONLY
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
Standard LSI
AQB-A253 1483D82G03 5925-01-493-8105 1483D82G01 5925-01-495-3022 1483D73G04 5925-01-481-5874
AQB-L253 1483D82G04 5925-01-532-5569 1483D82G02 5925-01-481-5876 1483D73G04 5925-01-481-5874
Instantaneous Only
AQB-A253 1483D82G13 —1483D82G01 5925-01-495-3022 1483D73G07 —
AQB-L253 1483D82G14 —1483D82G02 5925-01-483-1953 1483D73G07 —
Non-Automatic
NQB-A253 1483D82G06 5925-01-548-7748 1483D82G01 5925-01-495-3022 1483D73G06 —
BREAKER
STYLE
NUMBER
NATIONAL
STOCK NUMBER
AQB-A253 1483D82G09 5925-01-527-6915
AQB-L253 1483D82G10 5925-01-554-4936
NQB-A253 1483D82G11 5925-01-527-6914
BREAKER
STYLE
NUMBER
NATIONAL
STOCK NUMBER
NQB-A253 1483D82G12 —
AQB-L253 1483D82G15 —
AQB-A253 1483D82G16 —
ADJUSTABLE RATING PLUG
For list prices, see Price and Availability Digest (PAD).
Note:
Please contact Technical
Resource Center for specialty
part number with accessories
factory installed.
Note:
AIC ratings are based on 3-phase
average asymmetrical current.
AMPERE
RATING
STYLE
NUMBER
NATIONAL
STOCK NUMBER
100 – 160 6603C02G52 5935-01-481-2133
175 – 250 6603C02G51 5935-01-481-2131
72 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A253,
AQB-L253 and
NQB-A253
Circuit Breaker
Mounting Blocks
Complete circuit breaker
includes mounting hardware.
Female slip connectors are
included in the breaker base to
plug onto stud projections on the
front of terminal mounting block
assemblies; these mounting
blocks must be ordered sepa-
rately. Order two mounting block
assembly for each breaker.
Front-Connected
Circuit Breakers
For cable connections made at
front terminals, pressure-type
lugs are required. If specified on
order, connectors will be
furnished at no charge and
“tulips” removed. Use one
connector per terminal.
Select from the table below.
Auxiliary Switch
The auxiliary switch (AS)
changes state with the circuit
breaker. Auxiliary switches
supplied with this breaker are
form C (SPDT) with 3 lead wires.
The “a” (normally open) contact
mimics the action of the main
contacts and the “b” (normally
closed) contact is opposite. This
switch is mounted in the right
pole of the circuit breaker and
must be factory installed.
DESCRIPTION
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
NET WEIGHT,
LBS. (KG)
Mounting Block and Stud Set (3 Studs) 313C680G02 5940-01-146-6806 1.5 (0.7)
Terminal Mounting Block (No Studs) 313C681G01 2920-01-354-4811 1.0 (0.5)
One Stud Assembly Complete with 4 nuts 1631443 — 1.0 (0.5)
DESCRIPTION
CABLE
RANGE AMPERES
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Solderless Connector N40-N70 125 20B3055H14 5925-01-414-2467
N100-N125 150 – 175 20B3055H15 5925-01-429-4972
N150-N200 250 20B3055H16 5925-01-413-1588
DESCRIPTION
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
NET WEIGHT,
LBS. (KG)
Auxiliary Switch, 1a/1b, 115 Vac, 10 Amperes 1483D90G01 5930-01-558-9236 0.5 (0.2)
Auxiliary Switch, 2a/2b, 115 Vac, 10 Amperes 1483D90G02 5930-01-559-4835 0.5 (0.2)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 73
Shunt Trip
The Shunt Trip (ST) is provided
to remotely trip (open) the circuit
breaker in response to a remote
signal applied to the accessory
device. It is available in a variety
of voltage ratings (see below).
It is a momentary device that
draws power briefly and then is
disconnected by in integral cutoff
switch (included). It is mounted
in the left pole of the breaker and
can be installed only in the
absence of an undervoltage
release.
Please check with Eaton for
availability.
Undervoltage Release
The undervoltage release (UVR)
will trip the circuit breaker and
hold it in a tripped condition if the
control voltage to the UVR drops
below 40% to 60% of nominal.
After the UVR has tripped the
breaker it will be mechanically
reset by the opening action of
the breaker and electromagneti-
cally latched if the applied volt-
age returns to at least 80% of
nominal. It mounts in the left
pole of the circuit breaker cover
and can only be used in the
absence of a shunt trip device.
FACTORY INSTALL ONLY.
AQB-LF250 Adapter Plate
This close-out plate is required
when the AQB-L253 is used to
replace an existing AQB-LF250
circuit breaker. The plate closes
the hole in the switchboard or
panelboard where the fuse pack
of the –LF250 protruded.
NOMINAL
VOLTAGE
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
NET WEIGHT,
LBS. (KG)
115 Vac, 50/60 Hz 1483D92G03 5925-01-481-5863 0.5 (0.2)
115 Vac, 400 Hz 1483D92G04 0.5 (0.2)
450 Vac, 50/60 Hz 1483D92G05 5925-01-515-6353 0.5 (0.2)
28 Vdc 1483D92G01 5925-01-559-6023 0.5 (0.2)
120 Vdc 1483D92G02 5925-01-558-9230 0.5 (0.2)
250 Vdc 1483D92G06 0.5 (0.2)
NOMINAL
VOLTAGE
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
NET WEIGHT,
LBS. (KG)
115 Vac, 50/60 Hz 1483D91G01 — 0.5 (0.2)
450 Vac, 50/60 Hz 1483D91G02 — 0.5 (0.2)
120 Vdc 1483D91G03 — 0.5 (0.2)
250 Vdc 1483D91G04 — 0.5 (0.2)
DESCRIPTION
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
NET WEIGHT,
LBS. (KG)
AQB-LF250 Close-out Plate 6603C76G01 5895-01-483-1936 0.14 (0.1)
74 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A253,
AQB-L253 and
NQB-A253
Master Drawing 1483D48. Motor Operator
An electrical motor operator is
available which mounts on the
front face of the circuit breaker
and can be used for remotely
opening or closing the breaker.
It provides high speed actuation
with operating times of approxi-
mately 10 cycles (0.17 seconds).
Motor operators for the -A253 or
–L253 are rated at 120 Vac but
can be used at 450 Vac with a
customer-supplied 1 kVA step-
down transformer. A handle
extension is also provided for
installation on the circuit breaker
handle. Eaton recommends a
minimum 1 kVA power source
for each motor operator.
Handle Lock
A handle lock can be furnished to
lock the handle in either the ON
or OFF position if required. It
consists of a special bracket held
in place with a cotter pin.
Trip Unit Tester
A portable tester can be used
to functionally check the circuit
breaker and trip unit for overload
and short circuit trip settings.
The test port is located on the
front of the trip unit and can
be accessed while the circuit
breaker is mounted.
This test kit is common to all
Navy circuit breakers with
electronic trip units.
RECOMMENDED BREAKER AND ACCESSORY HARDWARE TORQUE VALUES
NET WEIGHTS
NOMINAL VOLTAGE STYLE NUMBER NATIONAL STOCK NUMBER NET WEIGHT, LBS. (KG)
120 Vac/Vdc, 60/400 Hz 1483D93G01 5925-01-542-4620 22.0 (10.0)
DESCRIPTION STYLE NUMBER NATIONAL STOCK NUMBER NET WEIGHT, LBS. (KG)
Handle Lock 1720101 — 0.15 (0.07)
Handle Extension 5103A34G01
DESCRIPTION STYLE NUMBER NATIONAL STOCK NUMBER NET WEIGHT, LBS. (KG)
STK-2 Portable Test Kit 1232C50G10 6625-01-419-1910 —
ITEM THREAD TORQUE, IN-LBS
Circuit Breaker Mounting Bolts .250-20 144
Circuit Breaker Cover Screws .164-32 23
Mounting Block Mounting Stud .375-16 144
Front Connect Cable Terminal .312-24 81
Rear Connect Stud Nuts .500-13 250
Trip Unit Mounting Screws .375-15 144
Motor Operator Mounting Bolts .250-20 144
Motor Operator Cover Screws .164-32 23
DESCRIPTION NET WEIGHT, LBS. (KG)
AQB-A253 Frame 18.31 (8.3)
AQB-L253 Frame 18.96 (8.6)
Single AQB-A253 Breaker with Rating Plug 21.97 (10.0)
Single AQB-L253 Breaker with Rating Plug 21.97 (10.0)
Trip Units 2.82 (1.3)
Rating Plug 0.03 (0.01)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 75
Outline Dimensions
AQB-A253, AQB-L253
and NQB-A253 Breakers —
Dimensions in Inches
14.
3
∞
.
62
.44
2.
0
∞
1
9
.
7
∞
24.
7
∞
3
.
81
4.
06
5
.
93
1.
62
.4
07
2.4
3
3
.
03
.22
8
.
50
4.2
5
3
.
00
4.
56
2
4.7
8
3
.
00
6
.
00
9
.
87
6
.1
0
9
.7
5
5
.7
0
M
a
xim
um
9
.
87
5
.
37
11.
00
3
.
00
1.41
9
.
87
ÿ
.
3
1
3
6
.
00
4.4
3
R .21
8
3
.
06
4.
50
4.
50
3
.
00
ÿ
1.
37
1.5
0
4.4
3
ÿ
.4
3
4.
03
ÿ
.
37
OFF
OFF
Handle
Piv
ot
Minim
u
m Fr
o
n
t
P
a
n
e
l
Cutout
Sca
l
e
.
3
7
5
= 1.
00
Drilling Plan for Terminal
Mounting Bloc
k
Lin
e
En
d
L
oad
En
d
Lin
e
En
d
L
oad
En
d
A
Q
B-L2
53
o
r
A
Q
B-A2
53
Br
ea
k
er
3
2
1
3
2
1
Lin
e
L
oad
AQB Breaker
,
wi
t
h
O
v
e
r
cu
rr
e
n
t
a
n
d
S
h
o
r
t
C
ir
cu
i
t
Tri
p
Protectio
n
N
Q
B Br
ea
k
e
r
N
o
n-A
uto
m
at
i
c
Typical Wiring Diagram
Four S
p
ecial Screws,
.250-20 Thread
,
for Mountin
g
Breaker
to Mountin
g
Block
.
C
L
C
C
Piv
ot
L
L
76 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A253,
AQB-L253 and
NQB-A253
Outline Dimensions
AQB-A253, AQB-L253
and NQB-A253 Breakers —
Dimensions in Inches
4.
65
5
.2
1
.
65
1.
62
3
.
03
5
.
37
9
.
87
.
81
.
56
.2
5
.
563
.2
51
.1
8
.1
8
.
53
3
.
00
.1
9
.1
9
12.14
C
l
oseout
Pl
ate
L
ocat
i
on
R
e
v
e
r
se
P
os
i
t
i
o
n
o
f L
oc
k
to
Pr
e
v
e
n
t
Breaker from Openin
g
Circuit Breaker Handle Locking Device
(Not Su
pp
lied with Breaker
)
C
r
oss
Sect
i
on
Sca
l
e
: 1.
00
3
.
00
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 77
Time-Current Curve for
AQB-A253 and AQB-L253
Equipped with LES Digitrip
RMS 310 Trip Units
CURVE NO. SC-7238-99
TIME IN SECONDS 1 HOUR
1 MINUTE 2 HOURS
CURRENT IN MULTIPLES OF
CONTINUOUS CURRENT SETTING (CCS)
.5
.5 20105432
1.8.6
1
.8
.6
CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS)
.7 .9 6789
20105432 6789
.7 .9
10,000
.1
1000
5000
4000
3000
2000
20,000
.01
TIME IN SECONDS
CURRENT IN AMPS
30,000
40,000
50,000
100,000
.2
.3
.4
.5
60,000
70,000
80,000
90,000
6000
7000
8000
9000
.05
.03
.02
.04
.06
.07
.08
.09
.6
.7
.8
.9
1
.1
.01
.2
.3
.4
.5
.05
.03
.02
.04
.06
.07
.08
.09
.6
.7
.8
.9
1
2
3
4
05
06
07
08
09
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10,000
Fixed Instantaneous
Override is Provided
@ 7500A
Circuit Breaker Time/Current Curves (Phase Current)
Types AQB-A253 and AQB-L253
Equipped With LES Digitrip RMS 310 Trip Units
Available Rating Plugs
100, 125, 150, 160
175, 200, 225, 250
Adjustable
Adjustable
6603C02G52
6603C02G51
200-2080
350-3250
Continuous Current
Setting (CCS)
Type Short Delay
Pickup Range
Amperes
Rating Plug
Catalog
Number
Typical Trip Unit Nameplate
Short Delay
Pick-upxCCS Time ms
AQB -A/L253 RMS 310 Trip Unit
50º C
6810
12
13
2
3
4
INST
100
200
300
TEST
Engaged
Remove
Push To
Trip
Continuous
Current Setting
250A
225A
200A
175A
CH Cutler-Hammer A/L253 Rating Plug
Curve accuracy applies from –20°C to +55°C ambient. For possible continuous ampere
derating for ambient above 50°C, refer to Cutler-Hammer.
For high fault current level a fixed instantaneous override is provided at 7500A.
(Tolerance ±20%).
The end of the curve is determined by the interrupting rating of the circuit breaker.
AQB-A/L253’s are suitable for functional field testing with test kit Cat. Number STK2.
Calibration response in short delay pickup range is same for 1, 2 or 3 poles in series.
There are memory effects that can act to shorten the long delay. The memory effects
come into play if a current above the long delay pickup value exists for a time and
then is cleared by the tripping of a downstream device or the circuit breaker itself.
A subsequent overload will cause the circuit breaker to trip in shorter time than normal.
The amount of time delay reduction is inverse to the amount of time that has elapsed
since the previous overload. Approximately five minutes are required between overloads
to completely reset the memory.
1.
2.
3.
4.
5.
6.
Notes
Voltage Rating
Frequency
Interrupting
Current
10 kA
–
30 kA
100 kA
60 Hz 400 Hz
Breaker
Type
A253
L253
500 VAC
4
2
3
8
10
6
12
13
Short Delay
Pickup Settings
(Tolerance ± 10%)
300ms
200ms
100ms
INST.
Long Delay
Minimum Total
Clearing Time
1.55 ± 10%
Long Delay
Maximum Total
Clearing Time
78 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Circuit Breakers for
Naval Shipboard Use —
Types AQB-L400,
AQB-LL400 Breakers
Types AQB-L400QF, AQB-
L400QM: 150,000 Amperes I.C.
and AQB-LL400QS: 100,000
Amperes I.C. 250 – 400
Amperes; 500 Volts ac, 60 Hz.
AQB-LL400QS Breaker
Motor Operator Mounted on
Circuit Breaker
AQB-L400QF, AQB-L400QM and
AQB-LL400QS current limiting
circuit breakers are designed for
installation in switchboards for
protection of generators and
feeders and branch circuits with
available fault currents of
150,000 amperes maximum.
Description
The Navy Type AQB-L400QF,
AQB-L400QM, and AQB-
LL400QS molded case circuit
breakers are 500 Vac maximum
rated devices with electronic
trip units rated at 400 amperes
maximum continuous current at
60 Hz. The circuit breakers are
assembled as 3-pole units which
may be used as 2- or 3-pole
devices.
The circuit breakers are designed
to MIL-C-17361 and meet the
requirements of Class HI-shock,
MIL-S-901. The circuit breaker
electronic trip unit has adjustable
short delay time and pickup trip
settings which can be readily
changed at the operator level to
meet the shipboard system trip
requirements. Four interchange-
able rating-plugs are available to
select the continuous current
rating of 250, 300, 350 or 400
amperes. Also provided is a
non-adjustable inverse time
delay tripping action for overload
conditions, and instantaneous
tripping for protection against
short circuit conditions that
exceed the preset short delay
pickup setting. In open air at
50°C, the circuit breaker will
carry continuously a current
equal to the ampere rating of the
installed rating plug. The calibra-
tion of the trip unit is insensitive
to ambient temperatures over a
range of -20°C to +70°C.
Operation
The AQB-L400QF, AQB-
L400QM, and AQB-LL400QS
current limiting circuit breakers
(without the need for current lim-
iting fuses) are designed to pro-
vide circuit protection for low
voltage distribution systems. The
circuit breakers will disconnect a
load from an electrical supply
when the handle is operated,
when an overcurrent or short cir-
cuit condition develops, or when
the push-to-trip button in the trip
unit is manually pressed. A com-
plete breaker consists of a
breaker, rating plug plus mount-
ing blocks and is available with
numerous attachments such as
electrical operator, shunt trip,
undervoltage release and auxil-
iary switches to perform varied
auxiliary functions.
The circuit breaker has a spring-
loaded independent over-toggle
operating mechanism that pro-
vides a quick-make quick-break
trip-free operation.
The operating mechanism also
provides the electro-mechanical
means to open the contacts
when trip conditions occur.
When current is flowing through
the contacts of the circuit
breaker, the positions of the
lower contact arms and the mov-
ing contact arms induce oppos-
ing magnetic fields. The resulting
opposing forces along the mag-
netic flux lines cause rapid con-
tact blow-apart under high
current fault conditions. The
AQB-L400QF and AQB-L400QM
circuit breakers have slot motors
for each moving contact arm to
intensify the magnetic field and
further increase the blow-apart
effect.
Specifications
●AQB-L400QF, AQB-L400QM
and AQB-LL400QS Current
Limiting Navy Circuit
Breakers.
●250 – 400 Amperes, 500 Volts
ac, 60 Hz.
Note:
Call Eaton for 400 Hz.
●3-Pole Only, 50°C Ambient.
Continuous Current Rating
●250, 300, 350 and
400 Amperes.
Current Interruption Ratings
●AQB-L400QF —
150,000 Amperes
●AQB-L400QM —
150,000 Amperes
●AQB-LL400QS —
100,000 Amperes
Protective Functions
●Long Delay Pickup (Minimum
Thermal Trip)
(Fixed)
131% to 156% (All Ratings)
Protective Functions
Short Delay Pickup
(Adjustable)
●AQB-L400QF —
650 – 1500 Amperes
●AQB-L400QM —
1700 – 3200 Amperes
●AQB-LL400QS —
3600 – 5800 Amperes
Short Delay Time
(Adjustable)
●MIN, 1, 2, 3, MAX. (5 Bands)
●See Trip Curves or MIL-Spec
Instantaneous Pickup (Fixed)
●AQB-L400QF —
1850 Amperes
●AQB-L400QM —
3280 Amperes
●AQB-LL400QS —
6300 Amperes
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 79
This enables these circuit break-
ers to have an interrupting rating
of 150 kA compared with the
AQB-LL400QS rating of 100 kA.
MAGNETIC FIELD WITH
SLOT MOTOR
L
o
w
er
Co
n
tact
m
Lin
e
En
d
r
Co
n
ducto
r
S
l
ot
M
oto
Up
pper
p
Upper
Upper
Co
o
n
tact
o
Ar
m
A push-to-trip button is provided
to manually trip the circuit
breaker. When the button is
pressed, a plunger rotates the
latch lever causing the circuit
breaker to trip.
All trip units are built into the
circuit breaker frames and use
electronic sensing elements.
The Types AQB-L400QF, AQB-
L400QM, and AQB-LL400QS
Seltronic trip units provide
protection functions. All trip units
are supplied electrically from
current sensors mounted on the
main conductors in the circuit
breaker base. A field-installed
rating plug determines the con-
tinuous ampere rating of the
trip unit. An electrical interlock
causes the circuit breaker to trip
at current levels of 75% or more
if the rating plug is not installed.
Under fault conditions, the trip
unit will initiate a trip signal and
energize the flux shunt trip.
When the flux shunt trip oper-
ates, the plunger extends and
rotates the trip lever. As the trip
lever rotates, the latch lever
rotates which unlatches the trig-
ger and the circuit breaker trips.
Overload Trip — The trip unit
initiates an ultimate trip of the cir-
cuit breaker within one hour for an
overload of 131% to 156%, and
in less time for higher overloads.
Short Delay Trip — For short cir-
cuit conditions that exceed the
short delay pickup setting but
not the instantaneous (override)
pickup, the trip unit initiates a trip
after the selected short delay
time setting.
Instantaneous Trip — For short
circuit conditions that exceed the
instantaneous (override) pickup
value, but not the current-limiting
threshold, the trip unit initiates a
trip with no intentional delay.
AQB-L400 AND AQB-LL400 CIRCUIT BREAKER
PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
Does not include rating plug.
Motor Operator
The motor operator is designed
to remotely switch a circuit
breaker to its ON, OFF and
relatch positions. The relatch
function will occur automatically
after a circuit breaker trip opera-
tion. The motor operator is self-
contained and assembled in
its own mounting frame which
mounts on the front of the circuit
breaker. When the ON or OFF
remote control button is pressed,
current flows to the electric
motor which turns a ball bearing
and screw assembly driving the
carrier and roller assembly. Two
rollers fit over the circuit breaker
handle and move with the handle
through its range of movement.
Limit switches control the travel
of the carrier assembly. A terminal
block is provided in the mounting
frame for control connections.
Bell alarm 752B515G01 is
included.
MOTOR OPERATOR PRODUCT SELECTION
If 450 Vac required, then customer
should supply own minimum
1 kVA step-down transformer per
motor operator.
BREAKER
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Circuit Breaker, Navy Type (Supplied with male plug-in adapters installed f
or rear connection)
AQB-LL400QS 1230C83G01 5925-01-356-4514
AQB-L400QF 1230C83G02 5925-01-440-3934
AQB-L400QM 1230C83G03 5925-01-360-5605
NQB-LL400 1230C83G04 5925-01-512-5100
AQB-LL400QS Mag Only 1230C83G05 —
AQB-L400QM Mag Only 1230C83G06 —
Rating Plug
250Q, 250 Amperes 1230C84G01 5925-01-356-8864
300Q, 300 Amperes 1230C84G02 5925-01-356-5973
350Q, 350 Amperes 1230C84G03 5925-01-356-5974
400Q, 400 Amperes 1230C84G04 5925-01-356-5975
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Motor Operator 115 Vac, 60 Hz 1234C53G01 5925-01-348-9823
80 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
CIRCUIT BREAKERS, NAVY TYPE,
AQB-L400QF, AQB-L400QM, AND
AQB-LL400QS (TOP) AND MOTOR
OPERATOR (BOTTOM)
MOUNTING BLOCK
AUXILIARY SWITCHES
SHUNT TRIP
“SHORE POWER” MOTOR OPERATOR (DDG-51 CLASS)
“SHORE POWER” BREAKER (DDG-51 CLASS)
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Plug-in Mounting Block, Rear Connected, Complete
(Required One Per Load or Line End)
1230C81G01 5975-01-457-5094
Mounting Block, Molded Base Only (For Mounting a Front Connected
Circuit Breaker, or as a Replacement Part)
1230C81G05 —
Male Slip Connectors (Replacement Part, Three Per Kit) 1230C81G04 —
Front Connected Terminal (Required Three Per Line or Load End) 504C497G01 —
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
1a/1b 115-450 Vac 1220C86G01 5930-01-358-5608
2a/2b 115-450 Vac 1220C86G02 5930-01-356-5780
1a/1b 120 Vdc 1220C86G05 —
2a/2b 120 Vdc 1220C86G06 —
1a/1b 115-450 Vac and 1a/1b 120 Vdc Combination 1220C86G07 —
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Shunt Trip (Left-Pole only) (Includes Build-in Cutoff Switch)
115 Vac/28 to 120 Vdc 1220C86G03 6625-01-356-5176
450 Vac Only 1220C86G04 5925-01-368-1501
Combination Shunt Trip and 1a/1b Auxiliary Switch (Left-Pole Only)
115 Vac/28-120 Vdc Shunt Trip and 115-450 Vac Auxiliary Switch 1220C86G08 5925-01-358-4082
115 Vac/28-120 Vdc Shunt Trip and 120 Vdc Auxiliary Switch 1220C86G09 5925-01-445-7323
450 Vac Shunt Trip and 115-450 Vac Auxiliary Switch 1220C86G10 —
450 Vac Shunt Trip and 120 Vdc Auxiliary Switch 1220C86G11 —
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Motor Operator 115 Vac (Works with UVR) 1241C42G01 5925-01-407-3083
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
LL400QS with UVR and 2A2B 1241C34G02 5925-01-442-3696
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 81
BREAKER WITH UNDERVOLTAGE RELEASE
(Only Left-Pole) UVR and Circuit Breaker must be ordered as an integral unit.
Using externally-mounted
step-down transformer supplied.
Not field mountable.
Switchboard Mounting
Breaker frame includes mount-
ing hardware. Stud projections
are mounted on the rear of the
breaker for plugging into female
slip connectors of terminal
mounting block assemblies.
Handle Lock
(For shipboard maintenance use
only) order style number
1720101.
Trip Unit Test Port Plug
For extra plugs, order
5091A80H01.
Fungus-Moisture-Resistance
Treatments
(JAN-T-152; JAN-C-173; MIL-V-173)
If specified, contact Eaton.
External parts are coated.
Technical Manual
When required, order
1240C33H01.
Master Drawing – 1375D92.
Portable Test Kit
Can be used to functionally test
the breaker for overload and
short circuit, while breaker is
mounted. When required, order
catalog number STK2.
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Undervoltage Release Mechanism (LH) Factory Installed
AQB-L400QF with 115 Vac 1230C83G15 —
AQB-L400QF with 450 Vac 1230C83G16 —
AQB-L400QF with 120 Vdc 1230C83G17 —
AQB-L400QF with 250 Vdc 1230C83G18 5925-01-521-6181
AQB-L400QM with 115 Vac 1230C83G19 —
AQB-L400QM with 450 Vac 1230C83G20 —
AQB-L400QM with 120 Vdc 1230C83G21 —
AQB-L400QM with 250 Vdc 1230C83G22 —
AQB-LL400QS with 115 Vac 1230C83G11 5925-01-514-3469
AQB-LL400QS with 450 Vac 1230C83G12 5925-01-356-4518
AQB-LL400QS with 120 Vdc 1230C83G13 —
AQB-LL400QS with 250 Vdc 1230C83G14 —
Individual Reproduction
When required, reproduction of
outline drawings and certification
sheets can be ordered as
follows.
NET WEIGHT
Adapter Kit
Style Number 6590C82G01/
National Stock Number 5925-01-
452-3858
LF400 Mtg. Block
6590C82G03
ITEM DESCRIPTION
1 Outline Drawing and Drilling
Plan on Vellum
2 Certification Data on Vellum
3 Reproduction of Items 1 and 2
DESCRIPTION
NET
WEIGHT
Circuit Breaker 30 lbs.
Motor Operator 22 lbs.
Mounting Block 10 lbs.
Front Connected
Terminals
(Set of Three)
1 lb.-10-1/4 ozs.
Portable Test Kit 12 lb.-14-1/4 ozs.
Rating Plug 2 ozs.
Shunt Trip 3 ozs.
Auxiliary Switch 2.5 ozs.
82 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Eaton Adapter Kit and Navy
Type AQB-L400 Molded
Case Circuit Breaker
Combination in AQB-LF400
The Navy Type AQB-L400 or
AQB-LL400 circuit breakers
when supplied with a factory
installed Eaton AQB-L400
Adapter Kit, can be installed
directly into Navy Type AQB-
LF400 applications. This combi-
nation of an AQB-L400/LL400
circuit breaker and the Eaton
Adapter Kit provides a direct one-
to-one current limiting type L400
circuit breaker replacement for
an already installed fused type
LF400 circuit breaker. Existing
AQB-L400/LL400 circuit breakers
in the field (manufactured prior
to August, 1992) may need a
factory modification to accept
the Adapter Kit. Contact Eaton
for details, if there are any
questions.
An Eaton AQB-L400 Adapter Kit
provides the means for convert-
ing the normally male config-
ured primary connections of an
AQB-L400/LL400 current limit-
ing circuit breaker to female
configured primary connections,
normally associated with an
AQB-LF400 circuit breaker. A
close out plate, attached directly
to the front of the AQB-L400 cir-
cuit breaker with four mounting
screws, provides the deadfront
cover required to complete the
conversion. This close out plate
blanks out the hole in the switch-
board door or cover, through
which the LF400 fuse pack
protruded.
The adapter kit itself is comprised
of line and load side adapter
blocks, six female spring loaded
primary connection adapters, a
close out plate, and four mount-
ing screws.
Eaton Adapter Kit Parts Before Installation
Navy Type AQB-L400 Molded Case
Circuit Breaker with Adapter Kit
Factory Installed
Navy Type AQB-L400 Circuit Breaker
and Adapter Kit Combination Plugged
into AQB-LF400 Mounting Blocks
Net Weight
34 Lbs. (15 kg) (Breaker plus
adapter).
L400/LL400 BREAKER WITH ADAPTER KIT (CALL EATON FOR OTHER CONFIGURATIONS)
BREAKER
STYLE NUMBER
CONSISTS OF
BREAKER FRAME
PLUS
PLUG
PLUS
ATTACHMENTS
PLUS
ADAPTER KIT
1241C54G01 LL400QS 400Q 115 Vac/28 Vdc ST and 115/450 Vac Aux. SW 6590C82G01
1241C54G02 L400QF 250Q None 6590C82G01
1241C54G03 LL400QS 400Q 450 Vac ST and 1A/1B Aux. SW 6590C82G01
1241C54G04 LL400QS 400Q 1A/1B Aux. SW 6590C82G01
1241C54G05 L400QM 300Q 450 Vac ST and 1A/1B Aux. SW 6590C82G01
1241C54G06 LL400QS 400Q None 6590C82G01
1241C54G07 LL400QS 300Q 450 Vac ST and 1A/1B Aux. SW 6590C82G01
1241C54G08 L400QM 350Q 450 Vac ST and 1A/1B Aux. SW 6590C82G01
1241C54G09 LL400QS 350Q None 6590C82G01
1241C54G10 L400QM 400Q None 6590C82G01
1241C54G11 LL400QS 400Q 450 Vac UVR & 2A/2B Aux. SW 6590C82G01
1241C54G12 L400QM 350Q 115 Vac ST 6590C82G01
1241C54G13 L400QM 300Q 115 Vac/28 Vdc ST and 115/450 Vac Aux. SW
(1220C86G08)
6590C82G01
1241C54G14 L400QM 400Q 1A/1B Aux. SW 6590C82G01
1241C54G15 LL400QS 400Q 115 Vac/28 Vdc Shunt Trip (1220C86G08) 6590C82G01
1241C54G16 LL400QS 350Q 450 Vac UVR and 2A/2B Aux. SW 6590C82G01
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 83
Outline Dimensions
AQB-L400, AQB-LL400 —
Dimensions in Inches
°
Ce
n
te
r Lin
e
of
C
ir
cu
i
t
Br
ea
k
er
H
a
n
d
l
e
1-1
/8
Lin
e
/8
1-7
/
/
3-3/4
3
-3
/
3-3/
10-3/16
0
-3
/1
0-3/1
11-7/32
-7
/
3
1-7/32
18-1/16
8
-1
/1
8-1/1
1
6
L
oad
9-17/32
17
/3
-17/3
21
/
6
4
2-3
/4
1-3
/8
5-5/32
5
-5
/
5-5/
/
1
6
3-1
/
/
21
/
6
4
1-1
/8
8-1
/4
/
4-1
/8
/
3-1
/
1
6
1-17
/
3
2
59
/
6
4
1-27
/
3
2
2-13/32 Load End
2
-13
/
32
2-13/32 L
2-17/32 Line End
2
-17
/
32
2-17/32 L
1-3
/
8 Load En
d
*
1-1
/
4 Line End
*
8
4
2-3
/4
5-1
/
2
* Conductor Hei
g
ht for Fron
t
Co
nn
ect
i
o
n
Fr
o
n
t
Su
rf
ace
of Mountin
g
P
a
n
el
On
R
eset
M
a
x
Automatic
mat
i
c
matic
T
ri
ppe
ed
e
6-1
/
1
6
5-1
/4
4-7
/8
3-3
/8
4-1
/
1
6
1-3
/4
9
9
-9
/
1
6
9
14-3/4
1
4-3
/4
14-3/4
1
9
-
32
5
5
-3
/
1
6
5-3/16
1
1
-3
/4
1
3-7
/8
R
ad
i
us
1
9
'
30
1
5
°
6-27/32
27
/3
27/3
5-13/16
-
13
/
-13/
2-3
/
1
6
C
C
C
L
L
L
C
C
11
/
1
6
84 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Outline Dimensions
AQB-L400, AQB-LL400
with Motor Operator —
Dimensions in Inches
L
oad
E
n
d
2-3
/4
8
4
8-1
/4
Lin
e
E
n
d
C
ir
cu
i
t
Br
ea
k
er
H
a
n
d
l
e
10-3
/
1
6
3-3
/8
7-13
/
1
6
1
-7
/8
1
1-3
/4
9
9
-9
/
1
6
9
1
1
4-3
/4
1
5
5
-3
/
1
6
5
1
°
1-3
/4
On
2-3
/
1
6
Of
8
.
008
T
ri
pp
e
d
1
9
°
°
°
0'
30
0
C
C
C
L
L
L
C
C
10-3/16
0
-3
/1
0-3/1
11-7/32
1
-7
/3
1-7/3
18-1/16
-
1
/
1
6
-1/16
1
6
6-27/32
27
/3
27/3
5-13/16
-
13
/
-13/
5-1
/2
8-1
/8
5
/
16-1
8
M
ou
n
t
i
n
g
H
a
r
d
w
a
r
e
5-1
/4
Nut De
pt
h
5
/
1
6
2.4
5
3
/
1
6
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 85
Wiring Diagrams
Front Sheet Template —
Dimensions in Inches
Drilling Plan for Mounting
Panel — Dimensions
in Inches
Lin
e
L
oad
A
Q
B Br
ea
k
e
r Wi
t
h
O
v
e
r
cu
rr
e
n
t
and Short Circuit Tri
p
Protectio
n
F
o
r 2-P
o
l
e
Br
ea
k
e
r
s
Use
Tw
o Outside Poles
w
w
5
.1
88
.2
50
R
H
a
n
d
l
e
C
L
CC
1.
6
2
5
3
.2
50
6
.
0
1
6
2.
0
7
8
1.
969
.1
88
R
2.7
50
3
.
500
5
.
500
7.
000
.
3
12 Di
a.
Me
gg
er Hole
s
C
L
C
C
H
a
n
d
l
e
5
.1
88
9
.
562
1.12
5
1.
3
7
5
2.7
50
Lin
e
En
d
Stud
Br
ea
k
er
1.7
50
.
500
1.
000
2.7
50
5
.
500
1.12
5
14.7
50
17.
000
1.1
99
R
.
500
Di
a
. -
6
H
o
l
es
f
o
r.
3
7
5
Mt
g
.B
o
l
ts
C
L
C
C
C
L
CC
C
L
CC
Stud
L
oad
En
d
86 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Characteristic Time-Current
Curves
Navy Type AQB-L400QF
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 250 AMPERE RATING PLUG
Rating Plug: 250
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
2
5
0
A
m
p
e
r
e
s
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
6
5
0
A
)
L
o
w
S
e
t
t
i
n
g
(
1
5
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
S
h
o
r
t
D
e
l
a
y
T
i
m
e
“
M
A
X
”
S
e
t
t
i
n
g
“
M
I
N
”
S
e
t
t
i
n
g
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
1
8
5
0
A
±
1
5
%
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 87
Characteristic Time-Current
Curves
Navy Type AQB-L400QF
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 300 AMPERE RATING PLUG
Rating Plug: 300
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
30
0
A
m
p
e
r
e
s
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
6
5
0
A
)
L
o
w
S
e
t
t
i
n
g
(
1
5
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
S
h
o
r
t
D
e
l
a
y
T
i
m
e
“
M
A
X
”
S
e
t
t
i
n
g
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
1
8
5
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
88 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Characteristic Time-Current
Curves
Navy Type AQB-L400QF
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 350 AMPERE RATING PLUG
Rating Plug: 350
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
6
5
0
A
)
L
o
w
S
e
t
t
i
n
g
(
1
5
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
S
h
o
r
t
D
e
l
a
y
T
i
m
e
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
1
8
5
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
“
M
A
X
”
S
e
t
t
i
n
g
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
35
0
A
m
p
e
r
e
s
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 89
Characteristic Time-Current
Curves
Navy Type AQB-L400QF
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 400 AMPERE RATING PLUG
Rating Plug: 400
Q
Curve T
olerance Applies
TT
Over T
T
-2
0
°
C
to
+7
0
°
C
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
6
5
0
A
)
L
o
w
S
e
t
t
i
n
g
(
1
5
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
S
h
o
r
t
D
e
l
a
y
T
i
m
e
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
1
8
5
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
“M
A
X
”
S
e
t
t
i
n
g
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
40
0
A
m
p
e
r
e
s
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
90 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Characteristic Time-Current
Curves
Navy Type AQB-L400QM
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 250 AMPERE RATING PLUG
Rating Plug: 250
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
2
5
0
A
m
p
e
r
e
s
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
T
i
m
e
“
M
A
X
”
S
e
t
t
i
n
g
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
328
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
1
7
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
3
2
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
“
M
I
N
”
S
e
t
t
i
n
g
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 91
Characteristic Time-Current
Curves
Navy Type AQB-L400QM
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 300 AMPERE RATING PLUG
Rating Plug: 300
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
3
0
0
A
m
p
e
r
e
s
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
T
i
m
e
“
M
A
X
”
S
e
t
t
i
n
g
“
M
I
N
”
S
e
t
t
i
n
g
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
328
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
1
7
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
3
2
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
92 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Characteristic Time-Current
Curves
Navy Type AQB-L400QM
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 350 AMPERE RATING PLUG
Rating Plug: 350
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
1
7
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
3
2
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
S
h
o
r
t
D
e
l
a
y
T
i
m
e
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
3
2
8
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
“
M
A
X
”
S
e
t
t
i
n
g
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
35
0
A
m
p
e
r
e
s
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 93
Characteristic Time-Current
Curves
Navy Type AQB-L400QM
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 400 AMPERE RATING PLUG
Rating Plug: 400
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
T
i
m
e
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
3
2
8
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
“
M
A
X
”
S
e
t
t
i
n
g
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
40
0
A
m
p
e
r
e
s
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
1
7
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
3
2
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
94 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Characteristic Time-Current
Curves
Navy Type AQB-LL400QS
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 250 AMPERE RATING PLUG
Rating Plug: 250
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
2
5
0
A
m
p
e
r
e
s
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
T
i
m
e
“
M
I
N
”
S
e
t
t
i
n
g
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
630
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
36
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
5
8
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
“
M
A
X
”
S
e
t
t
i
n
g
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 95
Characteristic Time-Current
Curves
Navy Type AQB-LL400QS
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 300 AMPERE RATING PLUG
Rating Plug: 300
Q
Curve T
olerance Applies
TT
Over T
T
-2
0
°
C
to
+7
0
°
C
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
3
0
0
A
m
p
e
r
e
s
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
T
i
m
e
“
M
A
X
”
S
e
t
t
i
n
g
“
M
I
N
”
S
e
t
t
i
n
g
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
630
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
3
6
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
5
8
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
96 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-L400,
AQB-LL400
Characteristic Time-Current
Curves
Navy Type AQB-LL400QS
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 350 AMPERE RATING PLUG
Rating Plug: 350
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
3
6
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
5
8
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
S
h
o
r
t
D
e
l
a
y
T
i
m
e
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
6
3
0
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
“M
A
X
”
S
e
t
t
i
n
g
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
35
0
A
m
p
e
r
e
s
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 97
Characteristic Time-Current
Curves
Navy Type AQB-LL400QS
Circuit Breaker
TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 400 AMPERE RATING PLUG
Rating Plug: 400
Q
Curve T
olerance Applies
T
T
Over T
T
-2
0
°
C
to
+7
0
°
C
M
a
x
i
m
u
m
T
r
i
p
T
i
m
e
S
h
o
r
t
D
e
l
a
y
T
i
m
e
F
i
x
e
d
I
n
s
t
a
n
t
a
n
e
o
u
s
(
O
v
e
r
r
i
d
e
)
P
i
c
k
-
U
p
6
3
0
0
A
±
1
5
%
M
a
x
i
m
u
m
I
n
t
e
r
r
u
p
t
i
ng
T
i
m
e
a
t
5
0
0
V
o
lts AC
M
i
n
i
m
u
m
T
r
i
p
T
i
m
e
C
u
r
r
e
n
t
L
i
m
i
t
i
n
g
T
h
r
e
s
h
o
l
d
“
M
I
N
”
S
e
t
t
i
n
g
“
M
A
X
”
S
e
t
t
i
n
g
L
o
n
g
D
e
l
a
y
P
i
c
k
-
U
p
w
i
th
R
a
t
i
ng
P
l
u
gs
o
f
40
0
A
m
p
e
r
e
s
S
h
o
r
t
D
e
l
a
y
P
i
c
k
-
U
p
(
36
0
0
A
)
L
o
w
S
e
t
t
i
n
g
(
5
8
0
0
A
)
H
i
g
h
S
e
t
t
i
n
g
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1
,
000
500
300
200
5,000
3
,
000
2
,
000
10,000
CURRENT IN AMPERES
TIME IN SECONDS
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
CURRENT IN AMPERES
10,000
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
TIME IN SECONDS
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
1 MINUTE1 HOUR2 HOURS
1 MINUTE 1 HOUR 2 HOURS
100
300
200
90
80
70
60
50
800
600
900
700
500
400
5,000
4,000
3,000
2,000
1,000
8,000
6,000
9,000
7,000
10,000
50,000
40,000
30,000
20,000
80,000
60,000
90,000
70,000
100,000
98 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Type NQB-A803
Circuit Breakers for
Naval Shipboard Use —
Type NQB-A803
500 Volts ac, 800 Amperes at
60 Hz, 650 Amperes at 400 Hz
Specifications: MIL-C-17361
●800 amperes at 60 Hz, 650
amperes at 400 Hz.
●500 volts ac, 60/400 Hz.
●3-Pole.
Interrupting Rating
●Non-overcurrent protection.
●Class: Hi Shock MIL-S-901D,
50ºC ambient.
NQB-A803 CIRCUIT BREAKER PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
ACCESSORIES
Note:
AIC ratings are based on 3-phase
average asymmetrical current.
TYPE
NQB-A803
COMPLETE BREAKER
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Rear Connect 1488D90G10 —
Front Connect 1488D90G20 —
Front Connect with 1A1B Aux. Contact 1488D90G30 —
Front Connect with 1A1B Aux. Contact and
Long Studs (BIW Style)
1488D90G31 —
DESCRIPTION
STYLE
NUMBER
Block Assembly, 3-Pole 2614D53G07
Auxiliary Switch, FACTORY INSTALL ONLY 4214B63G01
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 99
Outline Dimensions
NQB-A803 — Dimensions
in Inches
7.12
B
A
5
.1
8
5
.2
4
6
.
00
.
35
2.
98
.
37
1.
03
.
53
1.1
5
.5
3
1.
09
R
3
.
85
1
6
.
00
O
v
e
r
a
ll
Len
g
t
h
9
.2
5
Ce
n
te
rlin
e
of Mountin
g
H
o
l
es
14.7
5
7.
00
.2
9
.
94
.7
50
.
3
7
5
11.
50
P
us
h
T
o
T
r
ip
2.7
9
R .
3
1
2
2.4
9
1.
37
2.7
5
2.
34
8
.2
5
3
.2
3
1.
06
8
.
62
5
.
50
3.3
4
21
∞
2
∞
ON
1
5
±
2
1
3
∞
2
∞
Lin
e
En
d
L
oad
En
d
6
X .147 Di
a
. H
o
l
e
.520 Dee
p
To
Acce
p
t A #8 Thread
Cuttin
g
Screw
Co
n
tact
P
os
i
t
i
o
n
In
d
i
cato
r
R
ed
–
I
/
ON
G
r
ee
n
–
O
/
OFF
Whi
te
–
Tri
pp
e
d
R
e
m
o
v
ab
l
e
T
e
rmin
a
l
Co
v
e
r
M
ust
B
e
In Pl
ace
Whil
e
In
Se
rvi
ce
R
e
m
o
v
ab
l
e
T
e
rmin
a
l
Co
v
e
r M
ust
B
e
In
Pl
ace
Whil
e
In
Se
rvi
ce
.344 Dia. Mountin
g
Holes
.7
03
Di
a
.
C
'B
o
r
e
4.453 Dee
p
From To
p
.
59
4 Di
a
.
C
'B
o
r
e
.359 Dee
p
From Bottom
2X .500-13 Ta
p
Throu
g
h for
A
ttac
hm
e
n
t
L
eads
.12
5
x .7
50
S
l
ots
f
o
r
A
ttac
hm
e
n
t
Wir
es
H
a
n
d
l
e
Piv
ot
0
∞
±
2
∞
L
L
3
.
81
C
C
L
L
LL
L
L
C
C
L
L
L
L
L
L
C
C
L
L
LL
Breaker
Status
Dimension
AB
On 7.9 8.3
Off 6.5 6.9
Tripped 5.7 6.1
Reset 5.6 6.0
Handle Forces
In Handle at Center Line Hole
Off – On 130 Lb.
On – Off 105 Lb.
Trip – Reset 160 Lb.
100 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A1601,
NQB-A1601
Note: A1601 PRODUCTS ARE NO LONGER AVAILABLE.
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A1601,
NQB-A1601 Breakers
500 – 1600 Amperes; 500 Volts,
60 Hz ac, 75,000 Amperes I.C.
Breaker Only
Breaker and Mounting Base
Note:
AQB-A1601 are sold for replace-
ment only. They are no longer on
the Navy Qualified Products List.
Specification: MIL-C-17361
●500 – 1600 Amperes.
●500 Volts ac, 60 Cycles Only,
3-Pole, 50°C Ambient.
Interrupting Rating
●75,000 Amperes ac (Without
Delayed Instantaneous).
●50,000 Amperes ac (With
Delayed Instantaneous).
Class: Hi Shock MIL-S-901
Vibration: MIL-STD-167-1
Material and Workmanship:
MIL-E-917
AQB-A1601 circuit breakers are
designed for installation in
switchboards for protection of
generators and feeder and
branch circuits.
A complete breaker consists of a
breaker plus mounting base and
is available with numerous
attachments such as electrical
operator, shunt trip, undervolt-
age release and auxiliary
switches to perform varied
auxiliary functions.
Trip units for these breakers have
an adjustable instantaneous trip
and are listed with and without
delayed instantaneous trip for
system coordination.
NQB-A1601 Breakers have a
continuous rating of 1600
amperes. They are used only as
disconnects since they do not
have an automatic trip device.
Note:
Breakers with ratings other than
those listed above are consid-
ered as special and full descrip-
tive data must be provided.
400 cycle breakers are not
available.
AQB-A1601 AND NQB-A1601 3-POLE, 500 VOLTS, 60 CYCLES AC CIRCUIT BREAKER
PRODUCT SELECTION
For list prices, see Price and
Availability Digest (PAD).
TYPE
CONT.
AMPERE
RATING
INSTANTANEOUS
TRIP SETTING
AC AMPERES
BREAKER ONLY, CONSISTS OF:
FRAME (INCLUDES STABS) TRIP UNIT
LOW HIGH
STYLE
NUMBER
NATIONAL
STOCK NUMBER
STYLE
NUMBER
NATIONAL
STOCK NUMBER
Without Delayed Instantaneous Trip
AQB 600X 2000 6000 372D522G02 5925-01-105-4401 372D523G01 —
AQB 600XM 4000 12000 372D522G02 5925-01-105-4401 372D523G03 —
AQB 800X 2000 6000 372D522G02 5925-01-105-4401 372D523G07 —
AQB 1000X 2000 6000 372D522G02 5925-01-105-4401 372D524G03 5925-00-520-4743
AQB 1200X 2000 6000 372D522G02 5925-01-105-4401 372D524G05 —
AQB 1400X 4000 12000 372D522G02 5925-01-105-4401 372D524G07 —
AQB 1600X 4000 12000 372D522G02 5925-01-105-4401 372D524G09 5925-00-406-6131
NQB 1600 — — 372D522G02 5925-01-105-4401 372D524G10 —
With Delayed Instantaneous Trip (XT1 — Minimum Time Delay .0417 – .0458 Seconds)
AQB 500XT1 2000 6000 372D522G02 5925-01-105-4401 374D211G01 —
AQB 800XT1 2000 6000 372D522G02 5925-01-105-4401 374D211G07 —
AQB 1000XT1 2000 6000 372D522G02 5925-01-105-4401 374D212G03 —
AQB 1200XT1 2000 6000 372D522G02 5925-01-105-4401 374D212G05 5925-00-102-6086
AQB 1600XT1 4000 12000 372D522G02 5925-01-105-4401 374D212G09 5925-00-727-7574
With Delayed Instantaneous Trip (XT2 — Maximum Time Delay .0750 – .0708 Seconds)
AQB 500XT2 2000 6000 372D522G02 5925-01-105-4401 374D221G01 —
AQB 800XT2 2000 6000 372D522G02 5925-01-105-4401 374D221G07 —
AQB 1200XT2 2000 6000 372D522G02 5925-01-105-4401 374D222G05 5925-00-727-7555
AQB 1600XT2 4000 12000 372D522G02 5925-01-105-4401 374D222G09 5925-00-103-4248
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 101
Note: A1601 PRODUCTS ARE NO LONGER AVAILABLE.
Mounting Base
For switchboard mounting.
Includes back connectors for
switchboard bus and male stabs
to engage breaker. Matching
stabs are supplied with breaker
frame.
Note:
Can be field mounted. Consult
factory for information.
Style Number: 373D307G02
National Stock Number:
6110-01-178-5434
Electrical Operator
Mounts to front of breaker for
remote operation. 450 volt ac rat-
ing utilizes a transformer in con-
junction with a 120 volt motor. If
automatic reset is desired, order
the circuit breaker with optional
Automatic Reset Switch (See
Optional Additions).
Note:
Can be field mounted. Consult
factory for information.
Optional Additions
Note:
Can be field mounted. Consult
factory for information.
Shunt Trip
Mounts in right pole only. Has
momentary rating only; coil leads
must be wired in series with 1A
contact of auxiliary switch. (28
Vdc/120 Vac or 120 Vdc/450 Vac.)
Note:
Breaker can be supplied with
either shunt trip or undervoltage
release, but not both.
Undervoltage Release
Mounts in right pole only.
Note:
Breaker can be supplied with
either shunt trip or undervoltage
release, but not both.
Auxiliary Switch
Mounts in left pole only. 4 con-
tacts, any combination of A’s
and B’s, (supplied as 2A and 2B
unless specified) 8 contacts,
any combination of A’s and B’s,
(supplied as 4A and 4B unless
specified).
Automatic Reset Switch
For use with motor operator
when an automatic reset function
is required. Factory installed only.
Cable Connector
Mounts to bus connector for
cable connection. Each lug
accepts four cables, 600 kcmil
maximum 1 lug required per bus
connector.
Style Number: 505C706G03
Fungus, Moisture-Resistant
Treatment
(JAN-C-173 or MIL-V-173):
If specified, contact Eaton.
External parts are coated; trip
units are not treated.
Drawings
Master plan: 900J442
●Sheet 1 of 4: Breaker Only
and Wiring diagrams.
●Sheet 2 of 4: Trip Unit, Curves
and Attachments.
●Sheet 3 of 4: Mounting Base
and Cable Connectors.
●Sheet 4 of 4: Motor Operator.
Individual Reproductions
When required, reproductions of
sheets 1 through 4 of master
plan 900J442 can be ordered as
follows:
Technical Manual
NAVSHIPS No. 0962-014-5000.
This booklet per MIL-M-15071.
When required, order BVR-TM-
576.
Dimensions: Pages 102, 103,
104, 105 and 106.
Characteristic Curves:
Pages 107 and 108.
NET WEIGHT, LBS.
For ordering information,
see Page 5.
RATING
STYLE
NUMBER
NATIONAL
STOCK
NUMBER
120 Vac 1371D38G06 None
450 Vac 1371D38G08 Assigned
TYPE REPRODUCTION
Vellum
Prints (Paper)
DESCRIPTION WEIGHT
Breaker Only
AQB
NQB
151
148
Breaker Frame
(AQB and NQB)
128
Trip Unit
AQB
NQB
23
20
Mounting Base Only 75
Electrical Operator, 115 Volt 27
Electrical Operator, 450 Volt 35
Shunt Trip 3/4
Undervoltage Release 1-1/4
Auxiliary Switch 1-3/4
Cable Connector 3
102 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A1601,
NQB-A1601
Outline Dimensions AQB
and NQB Circuit Breaker
Frame — Dimensions in
Inches
NQB — Same except for trip unit
nameplate.
Front Panel Cutout
Reproduced from Drawing 900J442 Sheet 1
of 4.
4
2
4-1
/2
3-3
/4
12
6
1-1
/8
4
4
Mountin
g
Scre
w
s
22
11
1
3-5
/
8
7
-7
/
8
6
-1
/
4
4-1
/2
2-1
/4
5
3-1
/2
Mountin
g
Scre
w
s
4
4
1
/
2
Di
ameter 3
M
e
gg
er
H
o
l
e
s
R
e
m
o
v
ab
l
e
H
a
n
d
l
e
E
xtension Su
pp
lie
d
with Breake
r
6-1
/8
S
wi
tc
h
boa
r
d
Fr
o
n
t
P
a
n
el
l
B
C
g
m
9
3-25
/
3
2
4-3
/4
14-3/
8
5-19
/
3
2
Lin
e
L
oad
3
/
8-16 Thd
.
4
Sc
r
ew
s
9-7
/
8
10-1
/
2
R
6-1
/4
R
12
°
Of
f
f
f
3
°
T
ripped
T
T
1
8
°
On
1
8
°
M
A
ttac
hm
e
n
t
L
eads
Ar
e
Brou
g
ht Out Throu
g
h
One or More of These
Openin
g
s as Required
in
t
hi
s
S
i
de
f
o
r
S
h
u
n
t
Trip or Undervolta
g
e.
Release and O
pp
osite
Side for Auxiliar
y
Switches, Leads
Ex
te
n
d
Minim
u
m
o
f 1
8
" fr
o
m Br
ea
k
er
4
C
L
C
C
o
f Br
ea
k
er
4-11
/
1
6
3-21
/
3
2
2-11
/
3
2
Top End of Breake
r
7-25
/
3
2
6-7
/
1
6
6-21
/
3
2
5
/
16 Radiu
s
4
8
3 Holes for Me
gge
r
T
est 5/16 Diameter
T
T
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 103
Wiring Diagrams
Reproduced from Drawing 900J442 Sheet 1
of 4.
AQB NQB
When undervoltage release and
When shunt trip and auxiliary
auxiliary switches are provided.
switch are provided.
Note:
The auxiliary switch must be
used with each shunt trip. Con-
nect one side of shunt trip in
series with “A” contact (closed
when breaker is closed) of auxil-
iary switch when connecting to
power supply.
Lin
e
L
oad
Lin
e
L
oad
a
n
d
S
wi
tc
h
es
1
6
Leads 18" Lon
g
Undervolta
g
e
Release 2 Leads
18" Lon
g
4
“
A
”
a
n
d
4
“
B
”
16 Leads 18" Lon
g
Shunt Tri
p
2 L
eads
18" Lon
g
104 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A1601,
NQB-A1601
Outline Dimensions
Mounting Base —
Dimensions in Inches
Cutout for Switchboard
Reproduced from Drawing 900J442 Sheet 3
of 4
TOP VIEW
FRONT VIEW
BACK PANEL
4
3
/4
1
3
1-1
//2
3
/4
7
/
16 Dia
.
5-1/
8
4-5
/8
13-5
/8
1
/4
9
1-25
/
32
12-7
/
1
6
S
wi
tc
h
boa
r
d
B
ac
k P
a
n
e
l
4
1-1
//2
S
wi
tc
h
boa
r
d
Mountin
g
An
gl
e
1-1
/
1
6
2-1
/2
6-13
/
1
6
6-13
/
1
6
13
/
1
6
14-3
/8
5-3/1
6
4
13/32 Dia. 8 Hole
s
(
Mounting Base
)
22-1/
4
6-1
/8
S
tab
4-11
/
1
6
5
1-1
/4
1
6
S
tab
3
/
8-1
6
T
a
p
4 Hole
s
(Breaker Mountin
g)
1-25
/
3
2
S
wi
tc
h
boa
r
d
Front Pan
e
l
Switchboard Mounting Angle
All
Co
nn
ecto
r
s
Ma
y
Be Rotated 90
º
1-9
/
3
2
3
/
3
2
Lin
e
14-3
/8
6-5
/
1
6
3
/4
L
oad
3
19/3
2
1
/4
9-3/8 A
pp
roximat
e
Out
lin
e
of
Mountin
g
B
ase
7-3
/
1
6
1
/8
13
/
32 Dia.
8
H
o
l
es
6-13
/
1
6
2
2-1
/2
6-1
/8
1
/8
1-3
/8
6-7
/
1
6
12-7/
8
6-13
/
1
6
14-3
/8
SIDE VIEW
FRONT PANEL CUTOUT
MOUNTING BASE
With cable connections style
505C706G03 lug capacity —
four 600 MCM cables per lug.
C
L
C
C
o
f Br
ea
k
er
4-11
/
1
6
3-21
/
3
2
2-11
/
3
2
To
p
End
o
f Br
ea
k
er
7-25
/
3
2
6-7
/
1
6
6-21
/
3
2
5
/
16 Radiu
s
4
8
3
H
o
l
es
f
o
r
Me
gg
er Test
5
/
16 Diamete
r
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 105
Outline Dimensions
Electrical Operator —
Dimensions in Inches
Wiring Diagrams
Reproduced from Drawing 1371D46
WIRING DIAGRAM FOR 120-VOLT AC ELECTRICAL OPERATOR
WIRING DIAGRAM FOR 450-VOLT AC ELECTRICAL OPERATOR
Lin
e
E
n
d
22
12
6
L
oad
E
n
d
11
5-19
/
3
2
A
Q
B-A1
60
1 Br
ea
k
er
ripped
3
/
4 Dia
.
15-7
/
16 Rad
.
R
eset
M
R
e
m
o
v
ab
l
e
H
a
n
d
l
e
U
sed
f
o
r M
a
n
ua
l
O
p
eration Onl
y
12
°
Of
°
f
f
f
4
9
Limit Switches
(
2
)
Co
n
t
r
o
l D
e
vi
ce
M
ust
H
a
v
e
N
o
n-M
a
in
ta
in
ed
T
y
p
e Contact
s
Su
pp
lied b
y
Custome
r
Y
ello
Y
Y
w
L
S
1
N
C
COM
B
l
ack
L
S
2
Br
o
w
n
O
ff
/
Rese
t
On
COM
M
otor
1 Lin
e
O
ff
On
T
erminal Blocks
T
T
12
0
V
o
l
ts
ac Su
ppl
y
A
uto
m
at
i
c
R
eset
Switch (O
p
tional
)
Limit Switches
(
2
)
Co
n
t
r
o
l D
e
vi
ce
M
ust
H
a
v
e
N
o
n-M
a
in
ta
in
ed
T
y
p
e Contact
s
Su
pp
lied b
y
Custom
e
r
Y
ello
Y
Y
w
LS
1
N
C
COM
B
l
ack
L
S
2
Br
o
wn
O
ff
/
Rese
t
On
COM
M
oto
r
T
erminal Blocks
T
T
450
Vo
lts
ac Supply
A
uto
m
at
i
c
R
eset
Switch (O
p
tional
)
450
/
12
0
V
o
l
t
ac
T
r
a
n
s
f
o
rm
er
12
0
V
o
l
ts
ac
106 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A1601,
NQB-A1601
Switchboard Door Cutout
— Dimensions in Inches
Gasketed Cover
Electrical Operator
Reproduced from Drawing 1371D46
SWITCHBOARD DOOR CUTOUT FOR
ELECTRICALLY OPERATED BREAKER
GASKETED COVER FOR
SWITCHBOARD DOOR CUTOUT
(GASKET CEMENTED TO COVER)
A transformer is provided in the
operator frame.
C
L
CC
1
1
/2
C
utou
t
9-1
/2
5-1
/8
In
se
r
t
H
a
n
d
l
e
H
e
r
e
7-3
/
1
6
o
f Br
ea
k
er
1
/2
8-1
/2
Mountin
g
Hole
s
for Mountin
g
Bas
e
3/16-32 T
a
p
(
2
)
Hole
s
C
o
v
e
r Pl
ate
(Picture o
n
Ri
g
ht
)
P
rovisions Re
q
uire
d
f
o
r R
e
m
o
v
ab
l
e
Handle Stora
g
e
NOMINAL
VOLTAGE
VOLTAGE
RANGE
STYLE
NUMBER
120 Volts ac 90 – 130 1371D38G06
450 Volts ac 360 – 500 1371D38G08
9
/
32 Diameter Ho
l
e
Ca
p
tive Scre
w
1-1
/
2
3
1
/2
10-1
/2
9-1
/2
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 107
Characteristic Time-Current
Curves
Operating Characteristics
●Trip unit rating 500 – 1600
amperes 50°C ambient.
●Cold start.
●60 cycles.
Reproduced from Drawing 900J442 Sheet 2
of 4
PERCENT OF
TRIP ELEMENT
RATING
TRIPPING
TIME
600 20 to 60 Seconds
225 Less Than 1 Hour
150 1 Hour or More
10
,
00
0
5
.
000
3
,
00
0
2
,
00
0
1
,
00
0
500
300
2
00
10
0
60
30
2
0
1
0
5
3
2
1.
0
.
5
.
3
.2
.1
.
05
.
03
.
02
.
01
1
MINUTE
1
HOUR
2
HOURS
Ti
me
in
Seco
n
d
s
100
1
50
200
300
400
500
700
1,
000
2,
000
3
,
000
4,
000
5,
000
7,
000
1
0
,
000
2
0
,
000
P
e
r
ce
n
t
R
ated
Cu
rr
e
n
t
M
a
xim
u
m
Minim
um
Wi
t
h
out
Ti
Minim
u
mTim
e
Dela
y
Uni
t
M
a
xim
u
m
Ti
m
e
Dela
y
Uni
t
In
sta
n
ta
n
eous
T
ri
p
See
T
a
r
alues
10
,
00
0
5
.
000
3
,
00
0
2
,
00
0
1
,
00
0
500
300
2
00
1
00
60
30
2
0
1
0
5
3
2
1.
0
.
5
.
3
.2
.1
.
05
.
03
.
02
.
01
1
MINUTE
1
HOUR
2
HOURS
Ti
me
in
Seco
n
d
s
100
1
50
200
300
400
500
700
1,
000
2
,000
3
,
000
4,
000
5,
000
7,
000
1
0
,
00
0
2
0
,
000
Am
p
eres
Ti
m
es
1
0
.
001
7
0
M
a
xim
um
Minim
um
Without
Ti
me Dela
y
Un
i
t
Minim
u
mTim
e
t
M
a
xim
u
m
Ti
me Dela
y
Uni
t
600 Am
p
Thermal Eleme
n
t
2
000
6000
4
000
12
,
00
0
AQB-A1601 STANDARD BREAKER EXPANDED TIME DELAY CURVE
INSTANTANEOUS TRIP SETTING IN AMPERES ±10%
AMPERE
RATING LOW 2 3 4 HIGH
500XT1 2000 3600 4000 4800 6000
500XT2 2000 3600 4000 4800 6000
600X 2000 3600 4000 4800 6000
600XM 4000 7500 8000 10,000 12,000
800X 2000 3600 4000 4800 6000
800XT1 2000 3600 4000 4800 6000
800XT2 2000 3600 4000 4800 6000
1000X 2000 3600 4000 4800 6000
1000XT1 2000 3600 4000 4800 6000
1200X 2000 3600 4000 4800 6000
1200XT1 2000 3600 4000 4800 6000
1200XT2 2000 3600 4000 4800 6000
1400X 4000 7500 8000 10,000 12,000
1600X 4000 7500 8000 10,000 12,000
1600XT1 4000 7500 8000 10,000 12,000
1600XT2 4000 7500 8000 10,000 12,000
108 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A1601,
NQB-A1601
Characteristic Time-Current
Curves, Continued
Reproduced from Drawing 900J442 Sheet 2
of 4
DERATING CURVE
Factor for change in current
rating of circuit breaker with
change in ambient temperature.
Application
1. Known Conditions:
(A) Ambient
(B) Load Current
To determine trip unit rating
to be used when the load
current and ambient are
known, multiply the load
current by the factor
obtained from this curve for
the known ambient. The
result will be the ideal trip
unit rating, however, since
trip units are furnished with
only standard ratings as per
Navy Specs, select the stan-
dard trip unit whose rating is
equal to or one rating higher
than the ideal rating.
2. Known Conditions:
(A) Ambient
(B) Load Current
To determine the load cur-
rent on which a trip unit may
be used when ambient is
known, divide the trip unit
rating by the value obtained
from this curve for the
known ambient. The result
will be the maximum load
current on which the trip
unit should be used.
10
0
90
80
7
0
60
50
4
0
30
2
0
1
0
0
A
m
b
i
e
n
t
Te
°
C
0.
0
5
1.
0
1.
5
2.
0
F
actor
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 109
Types AQB-A1602,
NQB-A1602
Circuit Breakers for
Naval Shipboard Use —
Types AQB-A1602,
NQB-A1602 Breakers
Type AQB-A1602 85,000
Amperes Symmetrical I.C.
400 – 1600 Amperes; 500 Volts
ac, 60 Hz
AQB-A1602 Navy Breaker with
Cassette
The AQB-A1602 is a compact,
low maintenance, low voltage
circuit breaker in an insulated
case providing high interrupting
capability and a short-time with-
stand rating in a drawout frame.
It is a militarized version of the
Cutler-Hammer Systems Power
Breaker (SPB) and it meets the
requirements of MIL-C-17361/
15, MIL-S-901 Shock and
MIL-STD-167-1 vibration.
The AQB-A1602 has protection
features which are identical to
those provided by Navy type
air circuit breakers as per
MIL-C-17587.
Master Drawing
1376D08
Outline Drawing
1377D30
Technical Manual
6591C33H01
Applications
●Main generator and tie
breaker on small combatant
ships.
●Load center feeder breaker
on larger ships.
●Bus transfer switch breaker.
Ratings
●AQB-A1602, NQB-A1602.
●500 Vac, 60 Hz.
●400 to 1600 Ampere via field
replaceable rating plugs.
●1600 ampere frame —
800 to 1600 amperes.
●800 ampere frame —
400 to 800 amperes.
●85 kA symmetrical rms
interrupting rating or 100 kA
asymmetrical rms.
●50 kA symmetrical rms,
0.3 seconds short-time
withstand rating.
Trip Unit Characteristics
●Long time pickup — fixed at
150% of rating plug.
●Long time delay — see trip
curve.
●Short time pickup —
adjustable at 2, 2.5, 3, 4, 5, 6,
7 or 8 times rating plug.
●Short time delay — adjustable
at I (instantaneous), 0.10,
0.20 or 0.30 seconds.
●Instantaneous pickup
(override) factory selectable
at 10, 15 or 20 times frame
rating.
Features
●Affordable.
●Compact and lightweight.
●Full line of field installable
attachments.
●Secondary contacts
automatically disconnect.
●“T” connector on drawout
cassette allows switchboard
bus runs to be vertical or
horizontal.
●Cassette has self-contained
rail extensions for
withdrawing the breaker
●lntegral spring stored energy
electric operator or manual
operation.
●Solid-state electronic trip unit
with adjustable short-time
protection.
●Portable Test Kit for field
testing Catalog number STK2.
110 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types AQB-A1602,
NQB-A1602
AQB-A1602 AND NQB-A1602 CIRCUIT BREAKER PRODUCT SELECTION
Instantaneous override factory set
at 20x as standard.
NQB-A1602 does not provide over-
current protection; switch only.
Rating plugs for use with 800
ampere frame only.
Rating plugs for use with 1600
ampere frame only.
Auxiliary switches rated 115 –
450 Vac, 10 amperes.
Comes standard with breaker or
cassette.
TYPE
STYLE
NUMBER
NATIONAL
STOCK NUMBER
AQB-A1602 Circuit Breaker (800 Ampere Frame) 6649C53G01 —
AQB-A1602 Circuit Breaker (1600 Ampere Frame) 6649C53G02 —
NQB-A1602 Circuit Breaker 6649C53G03 —
Stationary Drawout Cassette 1377D26G01 5925-01-437-3920
Electronic Trip Unit 6605C06G02 —
Rating Plug, 400 Ampere 6635C58G12 —
Rating Plug, 480 Ampere 6635C58G11 —
Rating Plug, 560 Ampere 6635C58G10 —
Rating Plug, 640 Ampere 6635C58G09 —
Rating Plug, 700 Ampere 6635C58G08 —
Rating Plug, 800 Ampere 6635C58G07 —
Rating Plug, 800 Ampere 6635C58G06 —
Rating Plug, 900 Ampere 6635C58G05 —
Rating Plug, 1000 Ampere 6635C58G04 —
Rating Plug, 1200 Ampere 6635C58G03 —
Rating Plug, 1400 Ampere 6635C58G02 —
Rating Plug, 1600 Ampere 6635C58G01 —
Shunt Trip (with Cutoff Switch), 115 Vac 6591C53G01 —
Shunt Trip (with Cutoff Switch), 450 Vac 6591C53G02 —
Undervoltage Release, 115 Vac 6591C54G01 —
Auxiliary Switch, 4A/4B 6591C25G51 —
Auxiliary Switch, 8A/8B Qty. 2 6591C25G51 —
Cell Switch, 115 Vac 5075A33H01 —
Electrical Operator, 115 Vac 6591C55G01 —
Spring Release, 115 Vac 6591C56G01 —
Lifting Beam 1375D91G01 —
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 111
Outline and Mounting
Dimensions AQB-A1602
and NQB-A1602 Circuit
Breakers and Stationary
Element — Dimensions in
Inches
Contact Eaton for additional
details.
NET WEIGHT
C
L
C
C
Br
ea
k
er
Br
ea
k
e
r Fr
o
n
t
P
a
n
e
l
Cutout
L
C
L
L
Br
ea
k
er
L
C
L
L
Br
ea
k
er
L
C
LL
C
L
C
C
Br
ea
k
e
r B
ac
k P
a
n
e
l
Cutout
1
0
.1
5
2
0
.
30
1
0
.7
5
21.
50
6
.
50
7.
50
1
3
.
00
1
5
.
00
.
531
ÿ
4 H
o
l
es
2
3
.
3
1 4.
38
.7
5
3
.
00
12.
50
2
0
.1
1
17.47
.7
5
.
31
1
6
.
80
R
a
il
Ex
te
n
t
i
o
n
In
Sto
r
ed
P
os
i
t
i
on
1.50
.7
5
Co
nn
ecto
r
s
Ca
n
Be Installed in
t
h
e
H
o
rz
o
n
a
l
o
r
V
e
r
t
i
ca
l P
os
i
t
i
on
1
8
.
00
21.
50
1
/
4-20 Hex Bolt
to
Secu
r
e
R
a
il
Extensions
(
2
)
9
.
50
47
12.72
7.
50
1
5
.
00
8
.
63
17.2
5
11.
50
2
3
.
00
8.5
0
17.
00
.
688
ÿ
H
o
l
e
2 P
e
r
Co
n
ductor
.
531
6
.2
5
10.0
5
5
.1
2
1
0
.2
5
6
.
86
1
3
.
50
DESCRIPTION
NET WEIGHT,
LBS. (KG)
Circuit Breaker 159 (72)
Motor Operator 145 (66)
Mounting Block 80 (36)
Front Connected Terminals (Set of Three) 5 (2)
112 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Type AQB-A1602
Characteristic Time-Current
Curves
Navy Type AQB-A1602
Circuit Breaker
CURVE NO. SC-7212-99
6X
8X
4X
3X
2X
2.5X
4X
100MS
7X
300 MS
200 MS
TIME IN SECONDS
1,000
200
80
9
5
3
2
.9
.5
.3
.2
.1
.05
.03
.02
.01
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5 1
.8
.6
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
201054326789
Fixed Instantaneous
Overide (Factory Selectable at 10X,
15X, or 20X)
Available Fault Current
Determines End of Curve
.7 .9
1
.1
.01
.5
.3
.2
.05
.03
.02
30
.04
.06
.07
.08
.09
.5
.6
.7
.8
1
4
6
7
8
10
20
30
40
50
60
70
90
300
400
500
600
700
800
900
100
.5 1
.8
.6 201054326789
.7 .9 30
89
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
10 20 30 40 50 6070 8090
100
200
300
400
500
600
700
800
900
1000
.04
.06
.07
.08
.09
.4
.6
.7
.8
.9
TIME IN SECONDS
100 ms
200 ms
300 ms
I
Maximum
Trip Time
Minimum
Trip Time
Long Delay
P
i
c
k
u
p
a
t
1
.
5
X
R
a
t
i
n
g
P
l
u
g
A
m
p
e
r
e
s
Note
Trip units are suitable for functional field testing with Test Kit Cat.
No. STK2. For field testing using primarily injection method follow
NEMA publication AB-2-1984.
Circuit Breaker Time/Current Curves
Type AQB-A1602 Circuit Breakers
Available Rating Plugs
Frame Rating
(amperes)
6635C58G01
6635C58G02
6635C58G03
6635C58G04
6635C58G05
6635C58G06
6635C58G07
6635C58G08
6635C58G09
6635C58G10
6635C58G11
6635C58G12
Plug Rating
(amperes)
Style No.
1600
1600
1600
1600
1600
1600
800
800
800
800
800
800
1600
1400
1200
1000
900
800
800
700
640
560
480
400
Short Time Current Rating – 50kA, rms, symmetrical amperes
Interrupting Rating @ 500 Vac, 60 Hz – 85 kA, rms, symmetrical
(100 kA, rms, asymmetrical)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 113
Types ACB
1600/2000HR –
3200/4000HR
Note: COMPLETE NEW BREAKERS ARE NO LONGER AVAILABLE.
Circuit Breakers for
Naval Shipboard Use —
Types ACB 1600/
2000HR — 3200/
4000HR Breakers
500 Volts ac, 4,000 Amperes
Maximum, 85,000 Amperes
Symmetrical I.C.
ACB3200/4000HR Air Circuit Breaker
Shown Mounted in its Stationary
Drawout Cassette
ACB3200/4000HR Air Circuit Breaker
Removable Element, Rear View, with
Lifting Beam
ACB3200/4000HR Air Circuit Breaker
Stationary Drawout Cassette
The circuit breaker is a device
for interrupting, in air, a circuit
between separable contacts
under normal and abnormal
conditions. It is supplied as a
complete removable assembly
including drawout, stationary
frame and secondary control
contacts in a three-pole
construction.
The main power circuit consists
of butt type main and arcing con-
tacts. The function of the main
contacts is to carry full-rated
current and short circuit current
when the circuit breaker is
closed. The arcing contacts
transfer the current from the
main contacts to the arc chutes
when breaking currents.
Each contact assembly is fas-
tened to a common driveshaft
via an insulated drive link. By
rotating this driveshaft, the oper-
ating mechanism actuates the
contacts of all poles simulta-
neously. These contacts are
quick make and break, under
all conditions.
The circuit breaker is of the trip
free design in any position of
the closing stroke and may be
tripped before the contacts touch.
While an open operation exists,
the moving contacts will return
and remain in the open position
even if a manual or electrical
close operation is maintained.
The closing mechanism will not
reclose the circuit breaker after
such tripping until the closing
control circuit is opened and
then reclosed.
At the top of the circuit breaker,
surrounding each contact struc-
ture, is the arc chute assembly.
It is designed to extinguish the
arc that is drawn when the
contacts open.
Each contact assembly is
mounted on an insulated panel
bolted to the back panel of the
circuit breaker’s removable
element.
The moving contact assembly
is designed to make or break a
main power circuit by moving
onto or out from the fixed main
contacts.
Three current sensors are
installed. Two current sensors
are fixed to the stationary ele-
ment and surround the lower
outer main poles. The third cur-
rent sensor is fixed to the sta-
tionary element and surrounds
the top center main pole. These
ring-type current transformers
are designed to monitor the cur-
rent and to signal the solid state
overcurrent trip device to trip the
circuit breaker whenever current
exceeds its long time delay and
short time pickup settings.
Instantaneous overcurrent trip
devices are attached to the two
lower outer poles of the circuit
breaker. These calibrated
devices will trip the circuit
breaker whenever the current
exceeds the predetermined
instantaneous setting.
The operating mechanism
transmits the closing force to the
drive shaft. It is centrally located
in the front of the circuit breaker.
The ON/OFF indicator, located in
the front of the circuit breaker, is
fastened to the drive shaft above
the operating mechanism. This
device indicates whether the
circuit breaker is open (OFF) or
closed (ON).
The trip knob located in the front
of the operating mechanism pro-
vides a means for tripping the
circuit breaker manually.
Anti-rebound catches are pro-
vided to prevent reclosing of
the contacts when the circuit
breaker is tripped. These are
mounted on the side plates of
the breaker. They also function
as shock catches preventing
contacts of an open breaker
from closing.
The shunt trip circuitry, which
acts through the magnetic trip
device located on the left side
of the operating mechanism
assembly, provides the means
for electrically tripping the circuit
breaker from a remote location
with out regard to load condi-
tions in the circuit. Customer
supplied 120 Vac Power (stan-
dard) is converted to 30 Vdc by
a control panel for the magnetic
trip device.
The auxiliary switch, actuated by
the opening and closing of the
circuit breaker, is incorporated to
open and close certain contacts
in protective and control circuits.
The auxiliary switch is linked to
the driveshaft which is located
above the operating mechanism.
114 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ACB
1600/2000HR –
3200/4000HR
ACB 1600/2000HR –
3200/4000HR Breakers,
Continued
Directly beneath the operating
mechanism is the solenoid
closing coil mechanism which
provides the closing force for
electrical closing of the circuit
breaker.
The closing contactor, attached
to the left-hand side of the
removable element frame, con-
trols the supply of current to the
closing coil (customer supplied
450 Vac).
A rectifier unit permits the use of
an alternating current source for
closing the circuit breaker.
Primary disconnect assemblies
are mounted on each phase of
the circuit breaker to provide a
separable electrical connection
between the supply circuit and
the circuit breaker.
A movable secondary disconnect
assembly, fastened to a channel
structure mounted on the bot-
tom rear of the circuit breaker
removable element, permits the
withdrawal of the circuit breaker
without disconnecting the wiring.
An undervoltage trip device
(when supplied) mounted to the
right-hand side of the mecha-
nism will trip the circuit breaker
when the undervoltage coil is
de-energized by loss of voltage.
The lockout mechanism prevents
the circuit breaker from being
racked in or out while the circuit
breaker is closed, and prevents
closing of the circuit breaker
while the removable element
is being reached in or out.
The circuit breaker may be
racked into or out from the
Connected position from or to
the Disconnected position by
turning the withdrawal mecha-
nism drive shaft which is located
on the right of the operating
mechanism.
Provision is provided for two
indicating lamps. These lamps
are only supplied when speci-
fied. A “Tripped on overcurrent”
lamp is always provided.
NET WEIGHT
For ordering information or addi-
tional literature, consult Eaton.
DESCRIPTION
NET WEIGHT,
LBS. (KG)
2000 A Breaker 318 (144)
2000 A Cassette 180 (82)
4000 A Breaker 658 (299)
4000 A Cassette 495 (225)
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 115
Outline Dimensions
ACB 1600/2000HR Breaker
— Dimensions in Inches
Outline Dimensions for
Switchboard Installation
of Stationary Element
(Cassette)
REAR VIEW FRONT VIEW
RIGHT SIDE VIEW BASE VIEW (BASE MOUNTING)
Area to Be Ke
p
t Clear
Exh
aust
V
e
n
t
- Thi
s
Area to Be Ke
p
t Clear
8
H
o
l
es
3
/
8-16
U
N
C
T
a
p
O
mi
t
Mi
dd
l
e
Studs
an
d
Se
n
so
r
o
n 2
60
1R
&
2
603R
24
24
24
11
11
11
11
9-1/2
9
-
1/2
9-1/2
9-1/2
9
-
1/2
9-1/2
1-1
/2
4-1
/2
27
20-1/2
0
-1
/2
0-1/2
11-1/2
1
1-1
/
11-1/
4-1/2
4
-1
/2
4-1/2
6
6
1
9
9
3
2-1
/2
Area to Be Kept Clear
Secondar
y
Di
sco
nn
ects
2
2
9-1
/8
2
So
li
d
-
State
Se
n
so
r
s
8
24-5
/8
8
Cut
-
Out
in
S
wi
tc
h
boa
r
d
From Doo
r
1
0
0
7
14
2
5-1/2
2
3-1
/
2 x 1
/2
Thick T
ypical
T
T
1-3
/4
11
/
16 Dia
.
T
ypical
T
T
3
/4
3
/4
3
/4
19-1/8
9
-1
/
9-1/
1-3
/4
4 H
o
l
es
13
/
16 Dia
.
83/8
8
-
3/8
8-3/8
83/8
8
-
3/8
8-3/8
3-3/8
-
3
/8
-3/8
So
li
d
State
Se
n
so
r
s
Exhaust V
ent
V
V
-
Thi
s
Ar
ea
to Be Ke
p
t Clea
r
15
/
1
6
9
1
0
M
a
in
te
n
a
n
ce
P
os
i
t
i
o
n
Liftin
g
Poi
n
t
T
ilted Positio
n
C
l
ea
r
a
n
ce
to
R
e
m
o
v
e
Fr
o
m
S
wi
tc
h
boar
d
20-15
/
1
6
4-1
/2
1
3
20-1
/2
20-5
/
1
6
116 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Types ACB
1600/2000HR –
3200/4000HR
Outline Dimensions
ACB 3200/4000HR Breaker
— Dimensions in Inches
Outline Dimensions for
Switchboard Installation
of Stationary Element
(Cassette)
REAR VIEW FRONT VIEW
RIGHT SIDE VIEW BASE VIEW (BASE MOUNTING)
1
5
8
5-5/8
8
1010
9 15/16
9-15/16
9 15/16
A
rea to Be Ke
p
t Clear
O
mi
t
Mi
dd
l
e
Studs
a
n
d
Se
n
so
r
O
n
500
1
R
6
Hole
s
9
/
16 Dia
.
29 /8
29
-
1/8
29-1/8
7
7
1-1
/8
4-7
/8
9
11-1/2
1
1-1
/
11-1/
4-1/2
-1
/2
-1/2
3-5
/
1
6
Area to Be Ke
p
t Clea
r
Secondar
y
Di
sco
nn
ects
Exh
aust
V
e
n
t
—
Thi
s
Ar
ea
to
Be Ke
p
t Clear
11-5/8
11
-
5/8
11-5/8
23-1
/4
/
12-7/8
12
-
7/8
12-7/8
12-7/8
12
-
7/8
12-7/8
7
7
11-5/8
11
-
5/8
11-5/8
30-1/2
3
0-1/
2
30-1/2
2
17-1
/2
2
25-1/2
2
5-1
/
25-1/
3
8
26-3
/8
8
So
li
d
State
Se
n
so
r
s
5
T
y
p
1-1
/4
11
/
16 Dia
.
T
y
p
i
cal
4-1
/2
25-1
/4
8
H
o
l
es
13
/
16 Dia
.
1-3
/4
3-7
/8
1
5-3
/8
6-5
/
1
6
1-3/
4
3-7
/8
6-5
/
1
6
5-3
/8
B
us
Co
nn
ect
i
on
s
4
–
5 x 1/4
–
25-3
/8
22-1
/4
27
19-3
/8
4-7
/8
1
So
li
d
State
Se
n
sor
s
Exh
aust
V
e
n
t
–
Thi
–
s
A
Liftin
g
Poi
n
t
C
l
ea
r
a
n
ce
to
R
e
m
o
v
e
fr
o
m
S
wi
tc
h
boa
r
d
T
T
n
M
a
in
te
n
a
n
ce
P
os
i
t
i
o
n
Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com 117
Characteristic Time-Current
Curve
Navy Type ACB1600/2000HR –
3200/4000HR Circuit Breaker.
1
2
3
4
5
6
7
9
1
2
3
4
5
6
8
9
2
3
4
5
6
7
8
9
2
3
4
5
6
7
1
1
1
2
3
4
5
6
7
9
1
2
3
4
5
6
8
9
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
1
1
1
0
.
1
1.
0
1
0
1
00
1
2
3
4
5
6
7
8
9
1
2
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
3
4
5
6
7
9
1
2
1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
3
4
5
6
7
1
2
.
01
0
.
1
1.
0
1
0
1
00
1
000
Ti
me
In
Seco
n
ds
Lon
g
Ti
me Pick Up Settin
g
s a
t
A
o
f
Se
n
so
r R
at
i
n
g
Lon
g
Ti
me Dela
y
S
h
o
r
t
Ti
me Pick U
p
and 500
%
Show
n
S
p
ecial Max. Band 0.4 Sec
s
N
o
rm
a
l M
a
x. B
a
n
d
0
.
3
Secs
In
te
rm
ed
i
ate
B
a
n
d
0
.2
Secs
Min. B
a
n
d
0
.1
Secs
0
.
5
0
.
36
0
.2
4
0
.1
3
0
.
06
N
ote:
B
a
n
ds
In
c
l
ude
M
a
n
u
f
actu
ri
n
g
T
o
T
e
m
p.
E
°
°
C
Example of T
ypical Settings:
TT
S
h
o
r
t
g
118 Circuit Breakers for Naval Shipboard Use PG01218003E—January 2010 www.eaton.com
Notes
Eaton’s Electrical Sector is
a global leader in power
distribution, power quality,
control and automation, and
monitoring products. When
combined with Eaton’s full-scale
engineering services, these
products provide customer-driven
PowerChain Management[
solutions to serve the power
system needs of the data
center, industrial, institutional,
public sector, utility, commercial,
residential, IT, mission critical,
alternative energy and OEM
markets worldwide.
PowerChain Management
solutions help enterprises
achieve sustainable and
competitive advantages through
proactive management of the
power system as a strategic,
integrated asset throughout
its life cycle, resulting in
enhanced safety, greater
reliability and energy efficiency.
For more information, visit
www.eaton.com/electrical.
Eaton Corporation
Electrical Sector
1111 Superior Ave.
Cleveland, OH 44114
United States
877-ETN-CARE (877-386-2273)
Eaton.com
© 2010 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. PG01218003E / Z9397
January 2010
PowerChain Management is a registered
trademark of Eaton Corporation.
All other trademarks are property of their
respective owners.
