cooper bussmann

FWJ 1000V North American High Speed Fuse

  
Description:
North American style stud-mount fuses.

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.

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

Dimensions (in)
Amp rating A B C D E F G H I
35A-60A 5.000 0.940 3.110 4.235 4.180 0.352 0.750 0.125 0.380
70A-100A 4.932 1.125 3.085 4.266 4.156 0.352 1.000 0.188 0.407
125A-200A 5.685 1.526 3.261 4.803 4.055 0.445 1.000 0.250 0.819
250A-400A 5.768 2.000 3.500 4.811 4.150 0.433 1.500 0.250 0.764
500A-600A 7.201 2.500 3.465 5.984 4.706 0.562 2.000 0.375 1.201
800A-2000A 6.811 3.500 3.312 5.472 4.962 0.625 2.750 0.500 0.880
1mm = 0.0394” / 1” = 25.4mm


Catalog Numbers
Catalog Numbers Electrical Characteristics Watts Loss
Rated Current RMS-Amps I2T(A2 Sec)
Pre-arc Clearing at 1000V
FWJ-35A 35A 210 2000 7
FWJ-40A 40A 300 2500 8
FWJ-50A 50A 470 3500 10
FWJ-60A 60A 670 5000 11
FWJ-70A 70A 1100 6900 12
FWJ-80A 80A 1550 9700 13
FWJ-90A 90A 1900 12000 14
FWJ-100A 100A 2800 17500 15
FWJ-125A 125A 4800 35000 16
FWJ-150A 150A 6300 45000 25
FWJ-175A 175A 7500 65000 30
FWJ-200A 200A 11700 80000 32
FWJ-250A 250A 16000 112000 50
FWJ-300A 300A 23500 164000 56
FWJ-350A 350A 33000 231000 62
FWJ-400A 400A 47000 330000 67
FWJ-500A 500A 39500 329000 95
FWJ-600A 600A 61000 520000 105
FWJ-800A 800A 87000 500000 182
FWJ-1000A 1000A 190000 1100000 206
FWJ-1200A 1200A 370000 2100000 240
FWJ-1400A 1400A 470000 2700000 248
FWJ-1600A 1600A 700000 4000000 267
FWJ-1800A 1800A 925000 5300000 239
FWJ-2000A 2000A 1330000 7600000 244
• Watts loss provided at rated current.

Time-Current Curve



Peak Let-Through Curve

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