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FWH 500V North American High Speed Fuse

  
Description: North American style high speed semiconductor stud-mount fuses.

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.

Dimensions (in)




Catalog Numbers
Catalog Numbers Rated Current RMS-Amps I2t(A2 Sec) Watts Loss
Pre-arc Clearingat 500V
FWH-35B 35A 34 150 8
FWH-40B 40A 76 320 7.5
FWH-45B 45A 105 450 7.5
FWH-50B 50A 135 670 7.5
FWH-60B 60A 210 900 9.9
FWH-70B 70A 210 900 10.6
FWH-80B 80A 305 1400 12.7
FWH-90B 90A 360 1600 15
FWH-100B 100A 475 2000 17
FWH-125B 125A 800 3500 25
FWH-150B 150A 1100 4600 30
FWH-175B 175A 1450 6200 35
FWH-200B 200A 1900 8500 40
FWH-225A 225A 4600 23300 39
FWH-250A 250A 6300 32200 41
FWH-275A 275A 7900 40300 46
FWH-300A 300A 9800 49800 51
FWH-325A 325A 13700 63800 53
FWH-350A 350A 14500 72900 58
FWH-400A 400A 19200 96700 65
FWH-450A 450A 24700 127000 74
FWH-500A 500A 29200 149000 84
FWH-600A 600A 41300 206000 108
FWH-700A 700A 55000 298000 120
FWH-800A 800A 76200 409000 129
FWH-1000A 1000A 92000 450000 145
FWH-1200A 1200A 122000 600000 180
FWH-1400A 1400A 200000 1000000 210
FWH-1600A 1600A 290000 1400000 230
• Watts loss provided at rated current.

Features and Benefits
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Superior cycling capability

Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters

FWH 35-200A(B) & 900-1600A(A): 500V
Time-Current Curve

FWH 35-200A(B) & 900-1600A(A): 500V
Peak Let-Through Curve


FWH 250-800A: 500V
Time-Current Curve

FWH 250-800A: 500V
Peak Let-Through Curve
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