cooper bussmann

FE-British BS 88 690V 35-100A

BS 88 style stud-mount fuses.

Volts: 690Vac/500Vdc
Amps: 35-100A
IR: 200kA RMS Sym.

Agency Information: CE, Designed and tested to: BS 88 Part 4, IEC 269 Part 4, 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.

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

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

Dimensions (mm)

Catalog Numbers
Catalog Numbers Type Rated Current RMS-Amps I2t(A2 Sec) Watts Loss
Pre-arc Clearing
at 415V at 660V
35FE FE 35A 33 130 200 9
40FE 40A 52 180 300 9
45FE 45A 76 270 450 11
50FE 50A 103 380 600 11
63FE 63A 135 480 750 12
71FE 71A 210 600 950 17
80FE 80A 250 900 1500 20
90FE 90A 360 1300 2100 20
100FE 100A 470 1800 2800 23

Time-Current Curve

Peak Let-Through Curve

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