cooper bussmann

FWH 500V (14x51mm) Ferrule High speed fuses

Ferrule style high speed fuses.

Volts: 500Vac/dc
Amps: 1-30A
IR: 200kA RMS Sym. 50kA @500Vdc

Agency Information: CE, UL Recognition 1- 30A & CSA Component Acceptance: 5 - 30A.

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.

Terminals: Screw/quick connect or pressure plate/quick connect (Quick connect rated for 20A maximum)

Features and Benefits
• Excellent cycling capability and DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss in a compact size
• Used with finger-safe holders/blocks

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

Dimensions - mm (inches)

Catalog Numbers
Catalog Numbers Rated Current RMS-Amps I2t(A2 Sec) Watts Loss
Pre-arc Clearingat 500V
FWH-1A14F 1A
FWH-2A14F 2A
FWH-3A14F 3A 2.3
FWH-4A14F 4A
FWH-5A14F 5A 1.6 6.4 1.5
FWH-6A14F 6A 1.6 6.4 1.5
FWH-10A14F 10A 3.6 13 4
FWH-12A14F 12A
FWH-15A14F 15A 10 40 5.5
FWH-20A14F 20A 26 96 6
FWH-25A14F 25A 49 191 7
FWH-30A14F 30A 58 232 9

• Watts loss provided at rated current.

Time-Current Curve

Peak Let-Through Curve

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