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

Ratings:
Volts: 690Vac (IEC); 700Vac (UL); 800Vdc (5-50A)
Amps:  1-50A
IR: 200kA RMS Sym. 50kA @800Vdc

Agency Information: CE, UL Recognition, CSA Component Acceptance for versions without indicator only.

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

Dimensions - mm (inches)
Without Striker

With Striker


Catalog Numbers

Catalog Numbers	Size	Electrical Characteristics
		Current RMS-Amps	Rated I2t (A2 Sec)		Watts Loss
			Minimum Melting	Clearing At Rated Voltage
Without Striker
FWP-1A14Fa	14 x 51mm	1A	.	.	.
FWP-2A14Fa		2A	.	.	.
FWP-2.5A14Fa		2.5A	.	.	.
FWP-3A14Fa		3A	.	.	.
FWP-4A14Fa		4A	.	.	.
FWP-5A14Fa		5A	1.6	11	1.5
FWP-10A14Fa		10A	3.6	38.5	4
FWP-15A14Fa		15A	8.6	70	5.5
FWP-20A14Fa		20A	26	230	6
FWP-25A14Fa		25A	46.5	375	7
FWP-30A14Fa		30A	58	485	9
FWP-32A14Fa		32A	68	600	7.6
FWP-40A14Fa		40A	84	750	8
FWP-50A14Fa		50A	200	1800	9
With Striker
FWP-10A14FI	14 x 51mm	10A	3.6	38.5	4
FWP-15A14FI		15A	8.6	70	5.5
FWP-20A14FI		20A	26	230	6
FWP-25A14FI		25A	46.5	375	7
FWP-30A14FI		30A	58	485	9
FWP-32A14FI		32A	68	600	7.6
FWP-40A14FI		40A	84	750	8
FWP-50A14FI		50A	200	1800	9

• Watts loss provided at rated current.

Time-Current Curve


Peak Let-Through Curve