93
High Speed Fuses
High Speed
Fuses
Section Contents Page
General Applications . . . . . . . . . . . . . . . . . . . . . . . . 94-95
North American fuses & accessories . . . . . . . . . . . .94-113
DFJ - High speed Class J fuse . . . . . . . . . . . . . . . . . . .97
Square Body fuses & accessories . . . . . . . . . . . . 114-176
BS 88 fuses & accessories . . . . . . . . . . . . . . . . . .177-185
Ferrule fuses & accessories. . . . . . . . . . . . . . . . . .186-206
Power Factor
For other power factor
values, the total clearing
integral can be
calculated as a multiple
of the clearing integrals,
the correction factor K
and the correction factor
X.
Arc Voltage
This curve gives the
peak arc voltage, U L,
which may appear
across the fuse during its
operation as a function
of the applied working
voltage, Eg, (rms) at a
power
factor of 15%.
Power Losses
Watts loss at rated
current is given in the
electrical characteristics.
The curve allows the
calculation of the power
losses at load currents
lower than the rated
current. The correction
factor, Kp, is given as a
function of the RMS load
current, Ib, in % of the
rated current.
Cut-Off Current
A fuse operation relating to short-circuits only. When a fuse
operates in its current-limiting range, it will clear a short-
circuit in less than 1⁄2cycle. Also, it will limit the instantaneous
peak let-through current to a value substantially less than
that obtainable in the same circuit if that fuse were replaced
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
94
High Speed Fuses
Prospective Current in Amps RMS
Peak Let-Through Current
10
2 ≈ 10 2
2
103
104
105
103104105106
A
B
General Applications
Rated Voltage
The AC voltage rating of Cooper Bussmann®fuses is given
in volts rms. Fuses tested to IEC are tested at 5% above
their rated voltage. British Style BS 88 fuses are tested at
10% above its rated voltage. UL recognition tests are
performed at the rated voltage.
Rated Current
Rated current is given in amps rms. Cooper Bussmann fuses
can continuously carry the rated current.
Melting Characteristic
The melting
characteristic
shows the virtual
melting time in
seconds as a
function of the
prospective current
in amperes rms.
The fuses are
specially
constructed for
short-circuit
protection against
high level fault
currents. Loading
and operation of
the fuse in
the non-
continuous/dashed
section of the melt
curve must be
avoided. The curve
can also be read
as the real melting
time as a function of the RMS value of the pre-arc current.
Clearing Integrals
The total clearing I2t at
rated voltage and at
power factor of 15% are
given in the electrical
characteristics. For
other voltages, the
clearing I2t is found by
multiplying by correction
factor, K, given as a
function of applied
working voltage, Eg,
(rms).
104
103
102
10122468 2
1022468
103
2
4
6
2
6
4
100
2
6
4
101
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
10–4
10–3
10–2
10–1
K
1.5
1.0
0.5
0.4
0.3
0.2
100 200 300 400 500 600 660
Eg
1.0
0.9
0.8
0.7
0.1 0.2 0.3 0.4 0.5
COS ␸
X
UL
1.4
1.2
103
6
8
7
9
5
4
3
200 300 400 500 600 660
Eg
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 95
High Speed
Fuses
High Speed Fuses
General Applications
with a solid conductor of equal impedance.
A asymmetrical current
B symmetrical current
Parallel Connection
When fuses are connected in parallel it is recommended that
the applied voltage does not exceed 0.9 UN(the rated
voltage of the fuse). This is due to the fact that the energy
released within the fuses may be unevenly shared between
the parallel connected barrels.
When fuses are connected in parallel, one must take into
account that the current sharing is not necessarily equal. And
it must be checked, that the maximum load current is not
exceeded.
Series Connection
Fuses in series may not equally divide the applied voltage. It
is recommended that series connected fuses should only be
operated at fault currents that yield melting times less than
10 ms and a recovery voltage per fuse of less than or equal
to 0.9 UN(the rated voltage of the fuse).
Mounting Guidance
The recommendations below have to be followed when
mounting a Cooper Bussmann fuse with end plate threaded
holes.
1. Screw in studs: 5 N•m Max, 3 N•m Min
2. Attachment of the fuse to bussbar by means of nut and
washer:
TThhrreeaaddTToorrqquuee ((NN••mm))**
CCoonnffiigguurraattiioonnMMaaxxMMiinn
5⁄16” – 18, M8 25 20
3⁄8” – 16, M10 45 40
3⁄8” – 24 45 40
1⁄2” – 13, M12 65 50
1⁄2” – 20 65 50
*1 N•m = 0.7375 lb-ft
Overloads
The design of Cooper Bussmann®fuses is such that they
can be operated under rather severe operating conditions
imposed by overloads (any load current in excess of the
maximum permissible load current).
In applications, there will be a maximum overload current,
Imax, which can be imposed on the fuse with a
corresponding duration and frequency of occurrence.
Time durations fall into two categories:
1. Overloads longer than one second
2. Overloads less than one second termed “impulse” loads.
The following table gives general application guidelines
which, in the expression Imax < (% factor) x It. Itis the
melting current corresponding to the time “t” of the overload
duration as read from the time-current curve of the fuse. The
guidelines in the table below determine the acceptability of
the selected fuses for a given Imax.
FFrreeqquueennccyy ooff OOccccuurrrreenncceeOOvveerrllooaaddss ((>> 11 sseecc))IImmppuullssee LLooaaddss ((<< 11 sseecc))
Less than once per month Imax < 80% x ItImax < 70% x It
Less than twice per week Imax < 70% x ItImax < 60% x It
Several times per day Imax < 60% x It—
When impulse loads are an intrinsic/normal parameter of the
load current either as single pulse or in trains of pulses or
when their level is higher than the melting current at 0.01
seconds (per time-current curve), contact Cooper Bussmann
for application assistance.
In addition to the parameters set forth in the preceding table,
the RMS value of the load current as calculated for any
period of 10 minutes or more should not exceed the
maximum permissible load current.
Furthermore, it is important that a fuse should not be applied
in the non-continuous/dashed portion of the associated
time-current curve.
Any time-current combination point which falls in the
non-continuous/dashed portion of the time-current curve is
beyond the capability of the fuse to operate properly.
DC Operation
Depending upon the short-circuit time constant and the
magnitude of the prospective short-circuit current, the dc
voltage at which a fuse can be applied may be less than its
ac rating. Long time constants require a lower dc voltage.
Conversely, however, higher available prospective short-
circuit currents result in faster fuse openings and thus permit
a fuse to be operated at a higher DC voltage.
Consult Cooper
Bussmann for additional
information and applica-
tion assistance when
fuses have to operate
under DC conditions.
Load Current Versus
Conductor Cross
Section
Reduction of permissible
load current when the conductor cross section is less than
that given in IEC Publication 269-1 & 4 valid for Cooper
Bussmann high speed fuses.
Application Assistance
If you have application problems or need a fuse outside our
standard program, please contact the nearest Cooper
Bussmann representative. Phone numbers are shown on the
back cover.
1.0
0.9
0.8
0.5 0.6 0.7 0.8 0.9 1.0
≈ (IEC cross section)
Reduction Factor
Introduction
Nor th American Contents
Catalog Amp
Number Volts Range Page
DFJ 600 1-600 97
FWA 130 1000-4000 98-99
FWA 150 70-1000 100-101
FWX 250 35-2500 102-103
FWH 500 35-1600 104-105
KAC 600 1-1000 106
KBC 600 35-800 107
FWP 700 5-1200 108-110
FWJ 1000 35-2000 111-112
Accessories
Fuse Bases 113
Nor th American Fuse Ranges
AAmmppssVVoollttssAACCDDCC
1000-4000 130 X X
70-1000 150 X X
35-2500 250 X X
35-1600 500 X X
1-1000 600 X —
5-1200 700 X X
40-600 800 — X
35-2000 1000 X —
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
96
High Speed Fuses
Nor th American Fuses
General Information
Cooper Bussmann offers a complete range of North
American blade and flush-end style fuses and accessories.
Their design and construction were optimized to provide:
• Low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
• Low arc voltage
• Excellent DC performance
North American style fuses provide an excellent solution for
medium power applications. While there are currently no
published standards for these fuses, the industry has
standardized on mounting centers that accept
Cooper Bussmann fuses.
Voltage Rating
All Cooper Bussmann®North American style fuses are tested
at their rated voltage. Cooper Bussmann should be consulted
for applications exceeding those values.
Accessories
External and internal open fuse indication is available for
selected portions of the North American line. Fuse blocks are
available for most applications.
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 97
High Speed
Fuses
High Speed Fuses
Specifications
Description: High speed, cur rent-limiting fuse.
The Cooper Bussmann®Drive Fuse will provide maximum
protection for AC and DC drives and controller s and meet
NEC®branch circuit protection requirements. The Drive Fuse
has the lowest I2t of any branch circuit fuse to protect power
semiconductor devices that utilize diodes, GTOs, SCRs and
SSRs.
Dimensions: See page 15 for Class J dimensions.
Construction: Melamine tube with silver fuse element.
Ratings:
Volts — 600Vac (or less), 450Vdc (or less)
Amps — 1-600A
IR — 200kA RMS Sym., 100kA DC
Agency Information: CE, Std. 248-8, Class J, UL Listed,
Guide JDDZ, File E4273, CSA Certified, Class 1422-02, File
53787.
Features and Benefits
• Easily coordinated with existing and new variable speed
drives and electric controllers.
• Standard Class J dimensions allowing the use of readily
available fuse blocks, holders, and switches.
• Allows the lowest let-thru energy of any branch circuit
overcur rent protective device.
Typical Applications
• Protection of ac & dc drives
• Equipment using power semi-conductor devices
Catalog Numbers (Amps)
DFJ-1 DFJ-15 DFJ-70 DFJ-225
DFJ-2 DFJ-20 DFJ-80 DFJ-250
DFJ-3 DFJ-25 DFJ-90 DFJ-300
DFJ-4 DFJ-30 DFJ-100 DFJ-350
DFJ-5 DFJ-35 DFJ-110 DFJ-400
DFJ-6 DFJ-40 DFJ-125 DFJ-450
DFJ-8 DFJ-45 DFJ-150 DFJ-500
DFJ-10 DFJ-50 DFJ-175 DFJ-600
DFJ-12 DFJ-60 DFJ-200
Data Sheet: 1048
DFJ Class J
Drive Fuse High Speed Fuses
Time-Current Characteristic Cur ves—Average Melt
Current Limitation Cur ves
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
98
High Speed Fuses
Dimensions (in)
CCaattaalloogg NNuummbbeerrFFiigg..BBCCDDTThhrreeaadd DDeepptthh
FWA-1000AH-2000AH 1 2.0 1.0 — Tapped 3⁄8”-24 x 1⁄2”
FWA-2500AH-3000AH 1 3.0 1.5 — Tapped 1⁄2”-20 x 1⁄2”
FWA-4000AH 2 3.5 1.5 1.5 Tapped 1⁄2”-20 x 1⁄2”
1mm = 0.0394˝ / 1˝ = 25.4mm
Fig. 1: 1000-3000A Fig. 2: 4000A
1.875
BC
1.875
C
B
D
Arc Voltage
This curve gives the peak
arc voltage, UL, which
may appear across the
fuse during its operation
as a function of the
applied working voltage,
Eg, (rms) at a power
factor of 15%.
Power Losses
Watts loss at rated current
is given in the electrical
characteristics. The curve
allows the calculation of
the power losses at load
currents lower than the
rated current. The
correction factor, Kp, is
given as a function of the
RMS load current, Ib, in %
of the rated current.
Catalog Numbers EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
II22tt ((AA22SSeecc))
CCaattaallooggRRaatteedd CCuurrrreennttCClleeaarriinnggWWaattttss
NNuummbbeerrssRRMMSS--AAmmppssPPrree--aarrccaatt 113300VVLLoossss
FWA-1000AH 1000 170000 460000 60
FWA-1200AH 1200 270000 730000 70
FWA-1500AH 1500 520000 1400000 78
FWA-2000AH 2000 860000 2400000 108
FWA-2500AH 2500 1500000 4100000 130
FWA-3000AH 3000 2100000 5700000 150
FWA-4000AH 4000 3400000 9200000 257
• Watts loss provided at rated current.
• See accessories on page 113.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
Nor th American — FWA 130V: 1000-4000A
FWA
Specifications
Description: North American
style flush-end high speed fuses.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts: — 130Vac
Amps: — 1000-4000A
IR: — 200kA RMS Sym.
— 50kA @130Vdc
Agency Information: CE, UL Recognized on 1000-2000A
fuses
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at
rated voltage and at power
factor of 15% are given in
the electrical
characteristics. For other
voltages, the clearing I2t is
found by multiplying by
correction factor, K, given
as a function of applied
working voltage, Eg, (rms).
UL
Eg
200
100
100 15050
300
Data Sheet: 720001
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 99
High Speed
Fuses
High Speed Fuses
Nor th American — FWA 130V: 1000-4000A
FWA 1000-4000A: 130V
Time-Current Cur ve
10322468 2
1042468
105
Prospective Current In Amps RMS
2
4
6
2
6
4
100
2
6
4
101
2
6
4
2
6
4
2
6
4
Virtual Pre-Arcing Time In Seconds
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
103
104
FWA-4000AH
FWA-3000AH
FWA-2500AH
FWA-2000AH
FWA-1500AH
FWA-1200AH
FWA-1000AH
FWA-4000AH
FWA-3000AH
FWA-2500AH
FWA-2000AH
FWA-1500AH
FWA-1200AH
FWA-1000AH
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
6
4
2
6
4
2
246 246 246
104105
103
104
105
103
Peak Let-Through Curve
Data Sheet: 35785301
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
100
High Speed Fuses
2.656
1.936
2.188
1.156
0.312
0.438
0.750 1.000
0.125
Dimensions (in)
Fig. 1: 70-400A
1.500
0.250
3.500
2.438
1.250
1.000
0.406
Fig. 2: 500-1000A
1mm = 0.0394” / 1” = 25.4mm
Nor th American — FWA 150V: 70-1000A
FWA
Specifications
Description: North American style
stud-mount fuses.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts:— 150Vac/dc
Amps:— 70-1000A
IR:— 100kA Sym. (70-400A)
— 200kA Sym. (450-1000A)
— 20kA @150Vdc (70-800A)
— 100kA @ 80Vdc (70-400A)
Agency Information: CE, UL Recognized
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at rated
voltage and at power factor
of 15% are given in the
electrical characteristics. For
other voltages, the clearing
I2t is found by multiplying by
correction factor, K, given as
a function of applied working
voltage, Eg, (rms).
Arc Voltage
This curve gives the peak
arc voltage, UL, which may
appear across the fuse
during its operation as a
function of the applied
working voltage, Eg, (rms)
at a power factor of 15%.
Power Losses
Watts loss at rated current
is given in the electrical
characteristics. The curve
allows the calculation of
the power losses at load
currents lower than the
rated current. The
correction factor, Kp, is
given as a function of the
RMS load current, Ib, in %
of the rated current.
Catalog Numbers EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
RRaatteeddII22tt ((AA22SSeecc))
CCaattaallooggCCuurrrreennttCClleeaarriinnggWWaattttss
NNuummbbeerrRRMMSS--AAmmppssPPrree--aarrccaatt 115500VVLLoossss
FWA-70B 70 470 4000 6.9
FWA-80B 80 670 6000 7.7
FWA-100B 100 1200 12000 9.0
FWA-125B 125 1870 18000 11.2
FWA-150B 150 2700 26000 13.5
FWA-200B 200 4780 45000 17.6
FWA-250B 250 7470 70000 22.5
FWA-300B 300 10760 100000 27.0
FWA-350B 350 15700 140000 30.6
FWA-400B 400 20300 180000 35.2
FWA-500A 500 39000 120000 35.0
FWA-600A 600 46000 140000 47.0
FWA-700A 700 75000 220000 49.0
FWA-800A 800 92000 280000 58.0
FWA-1000A 1000 170000 510000 60.0
• Watts loss provided at rated current.
• See accessories on page 113.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
1501027022
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
1)
2)
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
UL
Eg
200
100
100 15050
300
1) 500-1000A Range
2) 70-400A Range
Data Sheet: 720002
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 101
High Speed
Fuses
High Speed Fuses
Nor th American — FWA 150V: 70-1000A
Prospective Current In Amps RMS
Virtual Pre-Arcing Time In Seconds
1022468
1032468
104
2
4
6
2
6
4
100
2
6
4
101
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
103
104
FWA-1000A
FWA-800A
FWA-700A
FWA-600A
FWA-500A
FWA-200A
FWA-400A
FWA-350A
FWA-300A
FWA-250A
FWA-150A
FWA-70A
FWA-80A
FWA-100A
FWA-125A
FWA 70-1000A: 150V
Time-Current Cur ve
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
6
4
2
6
4
2
6
4
246 246 246
102
103
104
106
1021031041052
FWA-400A
FWA-350A
FWA-300A
FWA-250A
FWA-200A
FWA-150A
FWA-100A
FWA-80A
FWA-70A
Peak Let-Through Curve
Data Sheet: 35785310
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
102
High Speed Fuses
Nor th American — FWX 250V: 35-2500A
FWX
Specifications
Description: North American
style stud-mount and flush-end
fuses.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts:— 250Vac/dc
Amps:— 35-2500A
IR:— 200kA RMS Sym.
Agency Information: CE, UL Recognized & CSA
Component Acceptance on 35-800A fuses (20kA IR
@250Vdc).
Electrical
Characteristics
Total Clearing I2t
The total clearing I2t at rated
voltage and at power factor
of 15% are given in the
electrical characteristics.
For other voltages, the
clearing I2t is found by
multiplying by correction
factor, K, given as a
function of applied working
voltage, Eg, (rms).
Arc Voltage
This curve gives the peak
arc voltage, UL, which may
appear across the fuse
during its operation as a
function of the applied
working voltage, Eg, (rms)
at a power factor of 15%.
Power Losses
Watts loss at rated current is
given in the electrical char
acteristics. The curve allows
the calculation of the power
losses at load currents lower
than the rated current. The
correction factor, Kp, is
given as a function of the
RMS load current, Ib, in %
of the rated current .
Catalog Numbers EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
RRaatteeddII22tt ((AA22SSeecc))
CCaattaallooggCCuurrrreennttCClleeaarriinnggWWaattttss
NNuummbbeerrRRMMSS--AAmmppssPPrree--aarrccaatt 225500VVLLoossss
FWX-35A 35 50 230 4.2
FWX-40A 40 60 310 5.2
FWX-45A 45 80 390 5.7
FWX-50A 50 100 520 6.0
FWX-60A 60 140 740 8.1
FWX-70A 70 330 1400 7.2
FWX-80A 80 430 1850 8.1
FWX-90A 90 570 2450 9.0
FWX-100A 100 740 3150 10.0
FWX-125A 125 1130 4850 12.5
FWX-150A 150 1620 6950 15.7
FWX-175A 175 2170 9300 18.5
FWX-200A 200 2790 12000 22
FWX-225A 225 3210 14700 24
FWX-250A 250 3960 18100 27
FWX-275A 275 4720 21600 31
FWX-300A 300 6000 27300 32
FWX-350A 350 10600 48600 39
FWX-400A 400 14500 66100 44
FWX-450A 450 22100 101000 49
FWX-500A 500 28000 128000 54
FWX-600A 600 41100 188000 62
FWX-700A 700 48800 190000 72
FWX-800A 800 59000 230000 84
FWX-1000AH 1000 44000 360000 100
FWX-1200AH 1200 92000 750000 103
FWX-1500AH 1500 120000 880000 140
FWX-1600AH 1600 160000 1200000 140
FWX-2000AH 2000 320000 2300000 151
FWX-2500AH 2500 670000 4700000 163
• Watts loss provided at rated current. • See accessories on page 113.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low
energy let-through (I2t)
• Superior cycling capability
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
1.5
1.0
0.5
0.3
0.2
0.15
75 125 300200 250
Eg
K
1)
2)
UL
1.4
1.2
103
800
600
500
400
300
200
50 100 150 200 250
Eg
1)
2)
1) 35-800A Range
2) 1000-2500A Range
1) 35-800A Range
2) 1000-2500A Range
AEDC
F
J
G
B
H
A
BC
A
BC
D
Fig. 1:
35-800A
Fig. 2:
1000-1200A
Fig. 3:
1500-2500A
Dimensions (in) TTaappppeedd
AAmmppTThhrreeaadd
RRaannggeeFFiigg..AABBCCDDEEFFGGHHJJDDeepptthh
35-60 1 3.19 0.81 1.59 2.59 2.25 0.34 0.63 0.13 0.52 —
70-200 1 3.13 1.22 1.59 2.44 2.19 0.34 1.00 0.19 0.47 —
225-600 1 3.84 1.50 1.59 2.94 2.25 0.41 1.00 0.25 0.75 —
700-800 1 3.84 2.00 1.59 3.03 2.28 0.41 1.50 0.25 0.78 —
1000-1200 2 2.59 3.00 1.50 — — — — — — 3⁄8”-24 x 1⁄2”
1500-2500 3 2.59 3.50 1.50 1.50 — — — — — 3⁄8”--24 x 1⁄2”
1mm = 0.0394” / 1” = 25.4mm
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
Data Sheet: 720005
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 103
High Speed
Fuses
High Speed Fuses
Nor th American — FWX 250V: 35-2500A
104
103
102
102103104
101
100
10–1
10–2
10–3
10–4
2
Prospective Current In Amps RMS
Virtual Pre-arcing Time In Seconds
FWX-800A
FWX-600A
FWX-500A
FXW-400A
FWX-350A
FWX-200A
FWX-150A
FWX-70A
FWX-60A
FWX-40A
FWX-35A
FWX-100A
10322468 2
1042468
105
2
4
6
2
6
4
100
2
6
4
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
101
103
104
FWX-2500AH
FWX-2000AH
FWX-1600AH
FWX-1500AH
FWX-1200AH
FWX-1000AH
Prospective Current In Amps RMS
Virtual Pre-Arcing Time In Seconds
FWX 1000-2500A(H): 250V
Time-Current Cur ve
FWX 35-800A: 250V
Time-Current Cur ve
FWX-150A
FWX-100A
FWX-70A
FWX-60A
FWX-45A
FWX-35A
FWX-200A
FWX-300A
FWX-400A
FWX-600A
FWX-800A
102103104105
102
103
104
105
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
A
B
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
6
4
2
6
4
246 246 246
103
104
105
FWX-2000AH
FWX-1600AH
FWX-1500AH
FWX-1200AH
FWX-1000AH
103104105
FWX-2500AH
Peak Let-Through Curve
Peak Let-Through Curve
Data Sheet: 359 Data Sheet: 35785299
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
104
High Speed Fuses
Nor th American — FWH 500V: 35-1600A
FWH
Specifications
Description: North American style
stud-mount fuses.
Dimensions: See Dimensions
illustration.
Ratings:
Volts: — 500Vac/dc
Amps: — 35-1600A
IR: — 200kA Sym.
— 50kA @ 500Vdc
Agency Information: CE, UL Recognition & CSA
Component Acceptance on 35-800A only (50kA IR@500Vdc).
UL Recognition on 35-1200A only, CSA Component
Acceptance: 35-1600A.
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at rated
voltage and at power factor of
15% are given in the electrical
characteristics. For other
voltages, the clearing I2t is
found by multiplying by
correction factor, K, given as a
function of applied working
voltage, Eg, (rms).
Arc Voltage
This curve gives the peak
arc voltage, UL, which
may appear across the
fuse during its operation
as a function of the
applied working voltage,
Eg, (rms) at a power
factor of 15%.
Power Losses
Watts loss at rated
current is given in the
electrical characteristics.
The curve allows the
calculation of the power
losses at load currents
lower than the rated
current. The correction
factor, Kp, is given as a
function of the RMS load
current, Ib, in % of the
rated current.
Catalog Numbers EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
RRaatteeddII22tt ((AA22SSeecc))
CCaattaallooggCCuurrrreennttCClleeaarriinnggWWaattttss
NNuummbbeerrssRRMMSS--AAmmppssPPrree--aarrccaatt 550000VVLLoossss
FWH-35B 35 34 150 8
FWH-40B 40 76 320 7.5
FWH-45B 45 105 450 7.5
FWH-50B 50 135 670 7.5
FWH-60B 60 210 900 9.9
FWH-70B 70 210 900 10.6
FWH-80B 80 305 1400 12.7
FWH-90B 90 360 1600 15
FWH-100B 100 475 2000 17
FWH-125B 125 800 3500 25
FWH-150B 150 1100 4600 30
FWH-175B 175 1450 6200 35
FWH-200B 200 1900 8500 40
FWH-225A 225 4600 23300 39
FWH-250A 250 6300 32200 41
FWH-275A 275 7900 40300 46
FWH-300A 300 9800 49800 51
FWH-325A 325 13700 63800 53
FWH-350A 350 14500 72900 58
FWH-400A 400 19200 96700 65
FWH-450A 450 24700 127000 74
FWH-500A 500 29200 149000 84
FWH-600A 600 41300 206000 108
FWH-700A 700 55000 298000 120
FWH-800A 800 76200 409000 129
FWH-1000A 1000 92000 450000 145
FWH-1200A 1200 122000 600000 180
FWH-1400A 1400 200000 1000000 210
FWH-1600A 1600 290000 1400000 230
• Watts loss provided at rated current. • See accessories on page 113.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low
energy let-through (I2t)
• Superior cycling capability
500400250100
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
1)
2)
UL
2.0
1.6
1.2
103
800
600
500
400
300
100 400300200 500
Eg
2)
1)
1) 35-200 & 1000-1600A Range
2) 225-800A Range
A
E
D
C
F
J
GB
H
10.219
3.219 0.625
4.25
0.75
3.5
6.219
0.125 0.5
1.625
1.750
8.969
Fig. 1: 35-1200A
Fig. 2: 1400-1600A
Dimensions (in)
AAmmpp
RRaannggeeFFiigg..AABBCCDDEEFFGGHHJJ
35-60 1 3.188 0.813 1.593 2.541 2.193 0.344 0.719 0.125 0.518
70-100 1 3.625 0.947 1.736 2.853 2.807 0.352 0.750 0.125 0.375
125-200 1 3.625 1.156 1.836 2.892 2.768 0.344 1.000 0.188 0.406
225-400 1 4.340 1.500 2.090 3.440 2.750 0.410 1.000 0.250 0.750
450-600 1 4.340 2.000 2.090 3.530 2.780 0.410 1.500 0.250 0.780
700-800 1 6.340 2.500 2.090 4.970 3.440 0.530 2.000 0.380 1.300
1000-1200 1 6.969 3.000 3.219 5.465 4.475 0.625 2.375 0.438 1.120
1400-1600 2 See Drawing
1mm = 0.0394” / 1” = 25.4mm
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
1) 35-800A Range
2) 1000-1600A Range
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
Data Sheet: 720007
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 105
High Speed
Fuses
High Speed Fuses
Nor th American — FWH 500V: 35-1600A
2468
10222468 2
1032468
104
2
4
6
2
6
4
2
6
4
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
100
101
10–1
10–2
10–3
10–4
102
103
104
FWH-90B
FWH-80B
FWH-125B
FWH-100B
FWH-175B
FWH-200B
FWH-150B
FWH-60B
FWH-70B
FWH-50B
FWH-45B
FWH-40B
FWH-35B
FWH-1200A
FWH-1400A
FWH-900A
FWH-1000A
FWH-1600A
Prospective Current In Amps RMS
10–3
10–2
10–1
100
101
102
103
10–4
FWH-300A
FWH-400A
FWH-500A
FWH-600A
FWH-800A
Prospective Current In Amps RMS
Virtual Pre-Arcing Time In Seconds
102103104105
FWH 250-800A: 500V
Time-Current Cur ve
FWH 35-200A(B) & 900-1600A(A): 500V
Time-Current Cur ve
FWH-200B
FWH-150B
FWH-125B
FWH-100B
FWH-80B
FWH-60B
FWH-50B
FWH-35B
FWH-40B
FWH-1000A
FWH-1200A
FWH-1400A
FWH-1600A
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
4
2
6
6
4
2
6
4
246 246 246 2
102
103
104
105
102103104105
FWH-800A
FWH-600A
FWH-500A
FWH-400A
FWH-300A
FWH-250A
102
105
104
103
103104105
102
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
A
B
Peak Let-Through Curve
Peak Let-Through Curve
Data Sheet: 35785304 Data Sheet: 360
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
106
High Speed Fuses
Nor th American — KAC 600V: 1-1000A
F
G
A
C
B1
H
D
Fig. 1: 1-30 & 450-1000A
A
B3
B2
C
E
DF
H
G
Fig. 2: 35-400A
Dimensions (in)
KAC
Specifications
Description: North American style
stud-mount fuses. These 600V fuses are
supplied as replacements only. For new
installations, Cooper Bussmann recommends
the 700V FWP Series fuse.
Dimensions: See Dimensions illustrations.
Ratings:
Volts:— 600Vac
Amps:— 1-1000A
IR:— 200kA RMS Sym.
Agency Information: CE, UL Recognition
on 1-600A only.
Catalog Numbers (Amps)
KAC-1 KAC-25 KAC-175
KAC-2 KAC-30 KAC-200
KAC-3 KAC-35 KAC-225
KAC-4 KAC-40 KAC-250
KAC-5 KAC-45 KAC-300
KAC-6 KAC-50 KAC-350
KAC-7 KAC-60 KAC-400
KAC-8 KAC-70 KAC-450
KAC-9 KAC-80 KAC-500
KAC-10 KAC-90 KAC-600
KAC-12 KAC-100 KAC-700
KAC-15 KAC-110 KAC-800
KAC-17.5 KAC-125 KAC-1000
KAC-20 KAC-150
• See accessories on page 113.
Features and Benefits
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
Typical Applications
• Power converters/rectifiers
• Reduced voltage starters
Data Sheet: 720009
AAmmpp
RRaannggeeFFiigg..AABB11BB22BB33CCDDEEFFGGHH
1-30A 1 2.875 2.500 – – 1.875 0.406 – 0.563 0.063 0.257
35-60A 2 4.375 – 3.750 3.500 2.750 0.625 0.343 0.813 0.094 0.468
70-100A 2 5.000 – 4.063 3.656 2.750 0.750 0.406 1.000 0.125 0.609
110-200A 2 5.140 – 4.390 3.766 2.906 1.000 0.406 1.500 0.188 0.718
225-400A 2 6.182 – 4.815 4.565 3.000 1.625 0.562 2.000 0.250 0.687
450-800A 1 6.250 4.750 – – 3.063 2.000 – 2.500 0.250 0.563
1000A 1 7.250 4.750 – – 3.063 2.750 – 3.500 0.375 0.563
1mm = 0.0394˝ / 1˝ = 25.4mm
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 107
High Speed
Fuses
High Speed Fuses
Nor th American — KBC 600V: 35-800A
Dimensions (in)
AAmmpp
RRaannggeeFFiigg..AABBCCDDEEFFGGHHII
35-60A 1 4.375 3.750 3.500 2.750 0.343 0.625 0.813 0.094 0.468
70-100A 2 See Drawing
110-200A 1 4.406 3.719 3.594 2.906 0.312 0.875 1.219 0.187 0.375
225-400A 1 5.125 4.188 3.563 2.906 0.406 1.000 1.500 0.250 0.719
450-600A 1 5.125 4.389 3.687 2.875 0.406 1.500 2.000 0.250 0.757
800A 3 See Drawing
1mm = 0.0394” / 1” = 25.4mm
KBC
Specifications
Description: North American
style stud-mount and flush-end
fuses. These 600V fuses are
supplied as replacements only.
For new installations, Cooper
Bussmann recommends the 700V
FWP Series fuse.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts: — 600Vac
Amps: — 35-800A
IR: — 200kA RMS Sym.
Agency Information: CE, UL Recognition on 35-600A only.
A
C
B
DE
FG
I
H
Fig. 1: 35-60 and 110-600A
Fig. 2: 70-100A
4.000
3.750
2.859
2.500
0.750
0.750
‹/•" - 24 ≈ ⁄/™"
Fig. 3: 800A
0.750
3.656
4.406
2.906
0.312
1.000
0.125
Catalog Numbers (Amps)
KBC-35 KBC-100 KBC-300
KBC-40 KBC-110 KBC-350
KBC-45 KBC-125 KBC-400
KBC-50 KBC-150 KBC-450
KBC-60 KBC-175 KBC-500
KBC-70 KBC-200 KBC-600
KBC-80 KBC-225 KBC-800
KBC-90 KBC-250
• See accessories on page 113.
Features and Benefits
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
Typical Applications
• Power converters/rectifiers
• Reduced voltage starters
Data Sheet: 720010
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
108
High Speed Fuses
Nor th American — FWP 700V: 5-1200A
FWP
Specifications
Description: North American
style stud-mount fuses.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts: — 700Vac/dc
Amps: — 5-1200A
IR: — 200kA RMS Sym.
— 50kA @700Vdc
Agency Information: CE, UL Recognition & CSA
Component Acceptance on 5-800A
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at rated
voltage and at power factor of
15% are given in the electrical
characteristics. For other
voltages, the clearing I2t is
found by multiplying by
correction factor, K, given as
a function of applied working
voltage, Eg, (rms).
Arc Voltage
This curve gives the peak arc
voltage, UL, which may
appear across the fuse
during its operation as a
function of the applied
working voltage, Eg, (rms) at
a power factor of 15%.
Power Losses
Watts loss at rated current is
given in the electrical
characteristics. The curve
allows the calculation of the
power losses at load
currents lower than the rated
current. The correction factor,
Kp, is given as a function of
the RMS load current, Ib, in
% of the rated current.
Catalog Numbers EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
RRaatteeddII22tt ((AA22SSeecc))
CCaattaallooggCCuurrrreennttCClleeaarriinnggWWaattttss
NNuummbbeerrssRRMMSS--AAmmppssPPrree--aarrccaatt 770000VVLLoossss
FWP-5B 5 1.6 10 1.5
FWP-10B 10 3.6 20 4
FWP-15B 15 10 75 5.5
FWP-20B 20 26 180 6
FWP-25B 25 44 340 7
FWP-30B 30 58 450 9
FWP-35B 35 34 160 12
FWP-40B 40 76 320 12
FWP-50B 50 135 600 12
FWP-60B 60 210 950 15.5
FWP-70B 70 305 2000 18
FWP-80B 80 360 2400 21
FWP-90B 90 415 2700 25
FWP-100B 100 540 3500 27
FWP-125A 125 1800 7300 28
FWP-150A 150 2900 11700 32
FWP-175A 175 4200 16700 35
FWP-200A 200 5500 22000 43
FWP-225A 225 7700 31300 45
FWP-250A 250 10500 42500 48
FWP-300A 300 17600 71200 58
FWP-350A 350 23700 95600 65
FWP-400A 400 31000 125000 78
FWP-450A 450 36400 137000 94
FWP-500A 500 45200 170000 107
FWP-600A 600 66700 250000 122
FWP-700A 700 54000 300000 125
FWP-800A 800 78000 450000 140
FWP-900A 900 91500 530000 150
FWP-1000A 1000 120000 600000 170
FWP-1200A 1200 195000 1100000 190
• Watts loss provided at rated current. • See accessories on page 113.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low
energy let-through (I2t)
• Superior cycling capability
700604460316
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
1)
3)
2)
UL
2
1.6
1.4
1.2
103
8
6
5
4
3
400300 500 600 700
Eg
1)
2)
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
1) 125-600A Range
2) 35-100 & 700-1200A Range
1) 35-100A Range
2) 125-600A Range
3) 700-1200A Range
AEDC
F
J
G
B
H
Fig. 1: 5-800A
Dimensions (in)
AAmmpp
RRaannggeeFFiigg..AABBCCDDEEFFGGHHII
5-30 1 2.870 0.563 1.855 2.477 2.477 0.250 0.405 0.063 0.250
35-60 1 4.375 0.813 2.750 3.708 3.312 0.344 0.725 0.125 0.542
70-100 1 4.406 0.947 2.594 3.625 3.563 0.344 0.750 0.125 0.375
125-200 1 5.090 1.500 2.840 4.190 3.500 0.410 1.000 0.250 0.750
225-400 1 5.090 2.000 2.840 4.280 3.530 0.410 1.500 0.250 0.780
450-600 1 7.090 2.500 2.840 5.720 4.190 0.530 2.000 0.380 1.300
700-800 1 6.630 2.000 2.844 5.562 5.062 0.625 1.500 0.250 0.875
900-1000 2 See Drawing
1200 3 See Drawing
1mm = 0.0394” / 1” = 25.4mm
7.594
0.5
3.500
3.844
1.031
0.625
2.750
5.966
5.154
1.375
Fig. 2: 900-1000A Fig. 3: 1200A
10.844
3.844
0.625
4.250
0.750
3.500
6.840
0.125
0.500
1.625
1.750
9.590
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
Data Sheet: 720012
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 109
High Speed
Fuses
High Speed Fuses
Nor th American — FWP 700V: 5-1200A
2468
10222468 2
1032468
104
2
4
6
2
6
4
2
6
4
101
100
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
103
104
FWP-35B
FWP-80B
FWP-90B
FWP-100B
FWP-60B
FWP-70B
FWP-40B
FWP-50B
FWP-900A
FWP-1200A
FWP-1000A
FWP-800A
FWP-700A
Prospective Current In Amps RMS
Virtual Pre-Arcing Time In Seconds
FWP 35-100A(B) & 700-1200A(A): 700V
Time-Current Cur ve
Prospective Short-Circuit Current
Peak Let-Through Current
2
6
4
2
6
4
2
6
4
246 246 246
102
103
104
106
1021031041052
FWP-700A
FWP-800A
FWP-1000A
FWP-100B
FWP-35B
FWP-70B
FWP-40B
FWP-50B
FWP-60B
FWP-1200A
Peak Let-Through Curve
2468
10122468 2
1022468
103
2
4
6
2
6
4
2
6
4
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
101
100
103
104
Prospective Current In Amps RMS
Virtual Pre-Arcing Time In Seconds
FWP-10B
FWP-15B
FWP-20B
FWP-5B
FWP-30B
FWP-25B
FWP 5-30A(B): 700V
Time-Current Cur ve
Prospective Short-Circuit Current
Peak Let-Through Current
2
4
2
6
6
4
2
6
4
246 246 246 246
101
102
103
104
101102103104105
FWP- 5B
FWP-10B
FWP-15B
FWP-20B
FWP-25B
FWP-30B
2
Peak Let-Through Curve
Data Sheet: 35785308Data Sheet: 35785316
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
110
High Speed Fuses
Nor th American — FWP 700V: 5-1200A
10–4
10–3
10–2
10–1
100
101
102
103
FWP-150A
FWP-200A
FWP-300A
FWP-400A
FWP-600A
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
102103104105
Prospective Current In Amps RMS
FWP 150-600A: 700V
Time-Current Cur ve
FWP-600A
FWP-400A
FWP-300A
FWP-200A
FWP-150A
102103104105
102
103
104
105
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
A
B
Peak Let-Through Curve
Data Sheet: 361
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 111
High Speed
Fuses
High Speed Fuses
Nor th American — FWJ 1000V: 35-2000A
FWJ
Specifications
Description: North American
style stud-mount fuses.
Dimensions: See Dimensions
illustration.
Ratings:
Volts: — 1000Vac
Amps: — 35-2000A
IR: — 25kA (35-200A)
— 100kA (250-2000A)
— 50kA @ 800Vdc (35-
200A, 450-600A)
Agency Information: CE, UL
Recognition File E91958 on
35-600A only.
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at rated
voltage and at power factor of
15% are given in the electrical
characteristics. For other
voltages, the clearing I2t is
found by multiplying by
correction factor, K, given as
a function of applied working
voltage, Eg, (rms).
Arc Voltage
This curve gives the peak arc
voltage, UL, which may
appear across the fuse
during its operation as a
function of the applied
working voltage, Eg, (rms)
at a power factor of 15%.
Power Losses
Watts loss at rated current is
given in the electrical
characteristics. The curve
allows the calculation of the
power losses at load
currents lower than the
rated current. The
correction factor, Kp, is
given as a function of the
RMS load current, Ib, in %
of the rated current.
Catalog Numbers EElleeccttrriiccaall CChhaarraacctteerriissttiiccss
RRaatteeddII22tt ((AA22 SSeecc))
CCaattaallooggCCuurrrreennttCClleeaarriinnggWWaattttss
NNuummbbeerrssRRMMSS--AAmmppssPPrree--aarrccaatt 110
00000VVLLoossss
FWJ-35A 35 210 2000 7
FWJ-40A 40 300 2500 8
FWJ-50A 50 470 3500 10
FWJ-60A 60 670 5000 11
FWJ-70A 70 1100 6900 12
FWJ-80A 80 1550 9700 13
FWJ-90A 90 1900 12000 14
FWJ-100A 100 2800 17500 15
FWJ-125A 125 4800 35000 16
FWJ-150A 150 6300 45000 25
FWJ-175A 175 7500 65000 30
FWJ-200A 200 11700 80000 32
FWJ-250A 250 16000 112000 50
FWJ-300A 300 23500 164000 56
FWJ-350A 350 33000 231000 62
FWJ-400A 400 47000 330000 67
FWJ-500A 500 39500 329000 95
FWJ-600A 600 61000 520000 105
FWJ-800A 800 87000 500000 182
FWJ-1000A 1000 190000 1100000 206
FWJ-1200A 1200 370000 2100000 240
FWJ-1400A 1400 470000 2700000 248
FWJ-1600A 1600 700000 4000000 267
FWJ-1800A 1800 925000 5300000 239
FWJ-2000A 2000 1330000 7600000 244
• Watts loss provided at rated current.
• See accessories on page 113.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
2000
1600
1200
800
400
200 600 1000 1400 1800
UL
Eg
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
1000800500200
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
A
E
D
C
F
J
GB
H
Fig. 1: 35-2000A
Dimensions (in)
AAmmpp
RRaannggeeFFiigg..AABBCCDDEEFFGGHHII
35-60 1 5.000 0.940 3.110 4.235 4.180 0.352 0.750 0.125 0.380
70-100 1 4.932 1.125 3.085 4.266 4.156 0.352 1.000 0.188 0.407
125-200 1 5.685 1.526 3.261 4.803 4.055 0.445 1.000 0.250 0.819
250-400 1 5.768 2.000 3.500 4.811 4.150 0.433 1.500 0.250 0.764
500-600 1 7.201 2.500 3.465 5.984 4.706 0.562 2.000 0.375 1.201
800-2000 1 6.811 3.500 3.312 5.472 4.962 0.625 2.750 0.500 0.880
1mm = 0.0394” / 1” = 25.4mm
Data Sheet: 720027
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
112
High Speed Fuses
Nor th American — FWJ 1000V: 35-2000A
2468
10322468 2
1042468
105
2
4
6
2
6
4
100
2
6
4
101
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
103
104
FWJ-1800A
FWJ-2000A
FWJ-800A
FWJ-1000A
FWJ-1200A
FWJ-1400A
FWJ-1600A
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
Prospective Current in Amps
FWJ 800-2000A: 1000V
Time-Current Cur ve
Prospective Current In Amps RMS
Virtual Pre-Arcing Time In Seconds
10222468 2
1032468
104
2
4
6
2
6
4
100
2
6
4
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
103
104
FWJ-125A
FWJ-150A
FWJ-60A
FWJ-100A
FWJ-90A
FWJ-80A
FWJ-70A
FWJ-50A
FWJ-40A
FWJ-600A
FWJ-200A
FWJ-250A
FWJ-300A
FWJ-350A
FWJ-400A
FWJ-500A
FWJ-175A
101
FWJ 35-600A: 1000V
Time-Current Cur ve
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
4
2
6
6
4
2
6
4
2
246 246 246 246
102
103
104
105
102103104105
FWJ-40A
FWJ-50A
FWJ-60A
FWJ-70A
FWJ-80A
FWJ-90A
FWJ-100A
FWJ-125A
FWJ-150A
FWJ-175A
FWJ-200A
FWJ-500A
FWJ-350A
FWJ-300A
FWJ-250A
FWJ-600A
FWJ-800A
FWJ-2000A
FWJ-1800A
FWJ-1600A
FWJ-1400A
FWJ-1250A
FWJ-1000A
FWJ-400A
Peak Let-Through Curve
Data Sheet: 35785303
Data Sheet: 35785309
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 113
High Speed
Fuses
High Speed Fuses
Nor th American Fuse Accessories
Stud TypeC5268 Series
BS Style Connector Type
Fixed Center
Fuse Bases (Blocks)
Modular Style
Cooper Bussmann offers a comprehensive line of fuse bases
that provide the user with design and manufacturing flexibility.
Two identical half bases make up a Cooper Bussmann®
modular fuse base. These “split” units can be panel mounted
any distance apart to accommodate any length fuse.
Stud Type (Not sold in pairs)
The simpler design is the C5268 Series modular fuse base.
With this design, the fuse terminal and cable (with
termination) are mounted on the same stud, minimizing labor
needed for installation. The stud type base is available in the
configuration shown in the table below.
CCaattaallooggMMaaxx FFuusseeSSttuuddSSttuudd DDiiaa..
NNuummbbeerrAAmmpp RRaattiinnggHHeeiigghhtt ((iinn))&& TThhrreeaaddss
C5268-1 200 1.00 5⁄16˝-18
C5268-2 200 1.75 5⁄16˝-18
C5268-3 200 0.75 5⁄16˝-18
C5268-4 100 1.00 1⁄4˝-20
C5268-5 100 1.75 1⁄4˝-20
Connector Type
Cooper Bussmann also offers a modular style fuse base that
utilizes a tin-plated connector (for wire termination and heat
dissipation) and a plated-steel stud (for fuse mounting). The
connector type fuse base is available in the configurations
shown below. Consult Cooper Bussmann for additional
product details.
MMoodduullaarrMMaaxxMMaaxx FFuusseeDDaattaa SShheeeett
BBaassee SSttyylleeVVoollttaaggeeAAmmpp RRaattiinnggNNuummbbeerr
1BS101 600 100 1206
1BS102 600 400 1207
1BS103 600 400 1208
1BS104 600 600 1209
BH-0xxx 700 100 1200
BH-1xxx 2500 400 1201
BH-2xxx 5000 400 1202
BH-3xxx 1250 700 1203
Fixed Center Base Style
Cooper Bussmann offers a comprehensive line of fixed
mount style fuse bases under the trademark TRON®rectifier
fuse blocks. The cable and fuse connections are similar to
the stud type fuse base — both are mounted on the same
stud. Consult Cooper Bussmann for complete product details.
Refer to page 275 for BH style holders.