cooper bussmann

FWA 150V:70-1000A North American High Speed Fuse

FWA 150V

Description: North American style stud-mount fuses.

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).

Dimensions (in)

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
Catalog Numbers Rated Current RMS-Amps I2t(A2 Sec) Watts Loss
Pre-arc Clearingat 150V
FWA-70B 70A 470 4000 6.9
FWA-80B 80A 670 6000 7.7
FWA-100B 100A 1200 12000 9
FWA-125B 125A 1870 18000 11.2
FWA-150B 150A 2700 26000 13.5
FWA-200B 200A 4780 45000 17.6
FWA-250B 250A 7470 70000 22.5
FWA-300B 300A 10760 100000 27
FWA-350B 350A 15700 140000 30.6
FWA-400B 400A 20300 180000 35.2
FWA-500B 500A 39000 120000 35
FWA-600B 600A 46000 140000 47
FWA-700B 700A 75000 220000 49
FWA-800B 800A 92000 280000 58
FWA-1000B 1000A 170000 510000 60
• 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

Time-Current Curve

Peak Let-Through Curve
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