Series 4310 Ambient Temperature-Compensated Sub-Miniature Circuit Breaker
The space-qualified product uti-
lizes the same internal design.
Sub-Miniature Size —
High Performance
Qualified
To MS3320 of Mil-C-5809.
Meets performance specifica-
tion of MS14105 of MIL-C-5809
High Interrupting Capacity
Interrupts 6,000A fault at 28V,
DC; up to 3,500A fault at 120V,
400 Hz., AC (ampere rating
dependent).
Vibration Resistance
Vibration resistance and
mechanical life exceed MIL
Specs — including random
vibration.
Temperature-Compensated
Ambient-temperature-compen-
sated from -55°C to +121°C.
Performance Rated Circuit
Breaker
The lightweight, single-phase
circuit breaker, Series 4310,
allows high density packaging
for all aircraft and aerospace
needs.
The 4310 series reflects the lat-
est advancements in circuit
breaker design — plus other
proven features (e.g., self-wiping
contacts).
Tight tolerances in design and
stringent manufacturing stan-
dards are key factors in the reli-
able operation of the 4310 under
severe environmental conditions
of high temperature, high
humidity, extreme vibration, and
shock. It is also fungus- and cor-
rosion-proof.
Calibration integrity is main-
tained through wide variations in
ambient temperature and alti-
tude, making this circuit breaker
ideal for applications where tem-
perature is not controlled.
Multiple Options
This series is available in many
optional configurations.
It is presently being manufactured with 7/16,
15/32 and metric mounting sleeves. Many ver-
sions of different terminals, barriers, and hard-
ware are current production items. Several dif-
ferent actuator options provide our customers
with additional flexibility.
OOVVEERRLLOOAADD CCAALLIIBBRRAATTIIOONN DDAATTAA
Specification @ 25°C @ +121°C @ -55°C Test Time
Table MIN MAX MIN MAX MIN MAX Parameters
Must Hold 115 — 100 — 115 — % For 1 Hour
Must Trip — 138 — 138 — 160 % Within 1 Hour
200% Overload 5.00 20.00 1.500 13.00 7.00 40.00 Seconds
500% Overload 0.50 2.00 0.150 1.10 0.50 3.00 Seconds
1000% Overload 0.12 0.53 0.035 0.30 0.16 0.80 Seconds
Trip curves available.
PPEERRFFOORRMMAANNCCEE DDAATTAA
Interrupting Capacity* 1 to 25A: 6,000A at 28V, DC. 1A: 3,500A at 120V, 400 Hz., AC
1 1/2 to 2 1/2A: 2,800A at 120V, 400 Hz., AC; 3 TO 15: 2,500A AT 120V, 400 Hz., AC;
20 to 25A: 2,000A at 120V, 400 Hz., AC
Endurance* At 120V, 400 Hz., AC or at 28V, DC: inductive load — 2,500 cycles; resistive load — 5,000 cycles;
mechanical cycling, no load — 10,000 cycles
Overload Cycling Minimum of 100 cycles at 200% rated current
Dielectric Strength At sea level, 25°C 1,500V, AC. At 70,000 ft. 121°C 500V, AC
Insulation Resistance Not less than 100 megohms at 500V, DC
Voltage Drop Varies with rating (see “Ordering Information”)
Vibration* Meets specification MIL-STD-202, Method 204, Condition A-10G, 10-500 Hz.
MS “V” type,(4310-019) meets Condition B, 15G, 10-2,000 Hz. and Condition C 10G, 10-2,000 Hz.
Shock* Exceeds 50G’s, 11 Milli-sec (half-sine pulse) MIL-STD-202, Method 213 Test A
Acceleration Exceeds 10G’s
Weight 25 grams (.055 lbs.)
* Variations of these circuit breakers are capable of exceeding the standard Mil specification for endurance vibration, shock, and
Interrupting capacity. Consult the Business Unit for more information.
OORRDDEERRIINNGG IINNFFOORRMMAATTIIOONN
MS Approval
Status
MS Approved
Non MS
Approved
MS Approved
MS Approved
MS Approved
MS Approved
MS Approved
MS Approved
MS Approved
MS Approved
MS Approved
Non MS
Approved
AMPERE
RATING
1
1 1/2
2
2 1/2
3
4
5
7 1/2
10
15
20
25
VOLTAGE
DROP
MAX. *
1. 10
0.80
0.75
0.70
0.55
0.45
0.35
0.30
0.28
0.25
0.25
0.20
MS P/N
MS3320-1
MS3320-2
MS3320-2 1/2
MS3320-3
MS3320-4
MS3320-5
MS3320-7 1/2
MS3320-10
MS3320-15
MS3320-20
STANDARD
EATON MP
P/N
4310-001-1
4310-0 01-105
4310-001-2
4310-001-205
4310-001-3
4310-001-4
4310-001-5
4310-001-705
4310-0 01-10
4310-001-15
4310-001-20
4310-001-25
LONG
BUTTON
MS P/N
MS3320-1L
MS3320-2L
MS3320-2 1/2L
MS3320-3L
MS3320-4L
MS3320-5L
MS3320-7 1/2L
MS3320-10L
MS3320-15L
MS3320-20L
EATON MP
P/N
4310-005-1
4310-005-105
4310-005-2
4310--005-205
4310-005-3
4310-005-4
4310-005-5
4310-005-705
4310-005-10
4310-005-15
4310-005-20
4310-005-25
HIGH
VIBRATION
MS P/N
MS3320-1V
MS3320-2V
MS3320-2 1/2V
MS3320-3V
MS3320-4V
MS3320-5V
MS3320-7 1/2V
MS3320-10V
MS3320-15V
MS3320-20V
EATON MP P/N
4310-019-1
4310-019-105
4310-019-2
4310-019-205
4310-019-3
4310-019-4
4310-019-5
4310-019-705
4310-019-10
4310-019-15
4310-019-20
4310-019-25
LONG BUTTON VIBRA-
TION
MS P/N
MS3320-1VL
MS3320-2VL
MS3320-2 1/2VL
MS3320-3VL
MS3320-4VL
MS3320-5VL
MS3320-7 1/2VL
MS3320-10VL
MS3320-15VL
MS3320-20VL
EATON MP
P/N
4310-024-1
4310-024-105
4310-024-2
4310-024-205
4310-024-3
4310-024-4
4310-024-5
4310-024-705
4310-024-10
4310-024-15
4310-024-20
4310-024-25
* AT RATED NOMINAL CURRENT
An auxiliary terminal version of the circuit breaker is available as 4380 Series.
For other amperage ratings and configurations, consult the Business Unit.
24 EATON CORPORATION Aerospace TF300-1 December, 2003
Standard
Series 4310
DDIIMMEENNSSIIOONNSS
TTRRIIPP CCUURRVVEE
.375 ± .005
.125 ± .005 DIA.
.453 ± .005 DIA.
RECOMMENDED MOUNTING
.781 MAX.
.375 ± .010
5
1.030
MAX.
1.343
MAX.
1.218
B*
.500
SCREW
MS51957-41
LOCKWASHER
MS35338-137
.045 ± .010
.005
.395 ± .005 DIA.
.593
BLACK BUTTON
WHITE TRIP
INDICATOR
A* MOUNTING NU
T
MS25082-C18
MOUNTING
LOCKWASHER
MS35333-141
.4375-32UN-ZA
THREAD
Percentage Of Circuit Breaker ’s Rated Current
Time To Open (Trip) In Seconds
MIL Spec Part No. A*Max. B*Min.
MS3320 4310-001 0.750 0.470
MS3320L 4310-005 1.125 0.845
MS3320V 4310-019 0.750 0.470
MS3320VL 4310-024 1.125 0.845
Min. Panel Thickness .025
Max. Panel Thickness .100
EATON CORPORATION Aerospace TF300-1 December, 2003 25
10000
1000
100
0
0.01 0.1 1.0 10 100 1000
TYPICAL
TRIP
CURVE
AT 25°C
160%
138%
UPPER LIMIT AT -55°C.
REFERENCE ONLY
10000
LOWER LIMIT AT +121°C.
REFERENCE ONLY
RANGE AT 25°C
115%
100%
