Form No. FWJ 1000
Page 1 of 2
BIF Doc #720027
Bussmann®
FWJ 1000V 35-2000A
Electrical Characteristics Ordering Information Dimensions Curves
Rated I2t (A2Sec) Carton
Current Clearing Watts Part Carton Weight Figure
Type RMS-Amps Pre-arc at 1000V Loss Number Qty. (lbs) Number BIF #
35 210 2000 7 FWJ-35A
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40 300 2500 8 FWJ-40A
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50 470 3500 10 FWJ-50A
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60 670 5000 11 FWJ-60A
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70 1100 6900 12 FWJ-70A 10 4.18
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80 1550 9700 13 FWJ-80A
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90 1900 12000 14 FWJ-90A
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100 2800 17500 15 FWJ-100A 35785303
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125 4800 35000 16 FWJ-125A
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150 6300 45000 25 FWJ-150A
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175 7500 65000 30 FWJ-175A 4.40
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FWJ 200 11700 80000 32 FWJ-200A
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1000V 250 16000 112000 50 FWJ-250A Fig. 1
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300 23500 164000 56 FWJ-300A
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350 33000 231000 62 FWJ-350A 4.84
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400 47000 330000 67 FWJ-400A
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500 39500 329000 95 FWJ-500A 1
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600 61000 520000 105 FWJ-600A
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800 87000 500000 182 FWJ-800A
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1000 190000 1100000 206 FWJ-1000A
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1200 370000 2100000 240 FWJ-1200A
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1400 470000 2700000 248 FWJ-1400A 5.28 35785309
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1600 700000 4000000 267 FWJ-1600A
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1800 925000 5300000 239 FWJ-1800A
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2000 1330000 7600000 244 FWJ-2000A
†U.L. Recognition on 35 through 600 amperes only. 1 kg = 2.2 lbs 1 lb = 0.45 kg
nInterrupting rating 25kA for 35 through 200 amperes.
nInterrupting rating 100kA for 250 through 2000 amperes.
nWatts loss provided at rated current.
n(800 Vdc/Interrupting rating 50kA) U.L. Recognition on 35-200 and 450-600 amperes.
7-11-01 SB01191
®
†
®
Bussmann®
The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled.
This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right,
without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without
notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
Form No. FWJ 1000
Page 2 of 2
BIF Doc #720027
FWJ 1000V 35-2000A
A
E
D
C
F
J
GB
H
Fig. 1: 35-2000 Amp Range
Order # Fig. A B C D E F G H J
FWJ-35A-60A 1 5.000 0.940 3.110 4.235 4.180 0.352 0.750 0.125 0.380
FWJ-70A-100A 1 4.932 1.125 3.085 4.266 4.156 0.352 1.000 0.188 0.407
FWJ-125A-200A 1 5.685 1.526 3.261 4.803 4.055 0.445 1.000 0.250 0.819
FWJ-250A-400A 1 5.768 2.000 3.500 4.811 4.150 0.433 1.500 0.250 0.764
FWJ-500A-600A 1 7.201 2.500 3.465 5.984 4.706 0.562 2.000 0.375 1.201
FWJ-800A-2000A 1 6.811 3.500 3.312 5.472 4.962 0.625 2.750 0.500 0.880
Dimension in inches.
1mm = 0.0394∑ 1∑ = 25.4mm
Dimensions
1000800500200
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
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
Total Clearing I2t
The total clearing I2t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I2t is found by multi-
plying 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 .
Electrical Characteristics
7-11-01 SB01191
†
