Description:
Ferrule style high speed fuses. with and without indicating striker.

Ratings:
Volts: 690Vac (IEC); 700Vac (UL)
Amps: 20-100A
IR: 200kA RMS Sym. 50kA @ 500Vdc

Agency Information: CE, UL Recognition

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 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)
Without Striker


With Striker



Catalog Numbers

Catalog Numbers	Size	Electrical Characteristics
		Rated Current RMS-Amps	I2t (A2 Sec)		Watts Loss
			Minimum Melting	Clearing At Rated Voltage
Without Striker
FWP-20A22Fa	22 x 58mm (7.8" x 29.32")	20A	19	260	5
FWP-25A22Fa		25A	34	410	6
FWP-32A22Fa		32A	53.5	605	8
FWP-40A22Fa		40A	68	750	9
FWP-50A22Fa		50A	135	1600	9.5
FWP-63A22Fa		63A	280	3080	11
FWP-80A22Fa		80A	600	6600	13.5
FWP-100A22Fa		100A*	1100	12500	16
With Striker
FWP-20A22FI	22 x 58mm (7.8" x 29.32")	20A	19	260	5
FWP-25A22FI		25A	34	410	6
FWP-32A22FI		32A	53.5	605	8
FWP-40A22FI		40A	68	750	9
FWP-50A22FI		50A	135	1600	9.5
FWP-63A22FI		63A	280	3080	11
FWP-80A22FI		80A	600	6600	13.5
FWP-100A22FI		100A*	1100	12500	16

*IEC/UL Voltage rating 600/700

Time-Current Curve



Peak Let-Through Curve