W221141 Ferraz Shawmut - Fuse

W221141 Description

The W221141 from Mersen is a DC high speed fuse with a 750 V / 350 A rating. It protects power semiconductors such as diodes, thyristors and IGBTs from short-circuit damage in drives, rectifiers and UPS systems.

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Summary of Features

Target Applications

Ferraz Shawmut W221141 is used for DC protection of inverters, motor drives, UPS systems, railway traction power and auxiliary circuits and similar equipment of 750 VDC or less.

Key Specifications

Mersen (Ferraz Shawmut) W221141 is a Protistor size 122 gR square body high speed fuse for DC protection, 350 A, 750 VDC (IEC), blade contacts (EF), with striker (catalog number D122GC75V350EF). Source: Mersen Protistor size 122 gR 750 VDC datasheet (DS-PFSA12GD2-06-1224-EN).

Parameter	Value
Catalog number	D122GC75V350EF
Item number	W221141
Rated voltage	750 VDC (IEC 60269-4)
Rated current	350 A
Characteristic	gR, size 122
Terminals	blade contacts (EF)
Breaking capacity	100 kA DC
Pre-arcing I²t	38.08 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 50 In	500 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 10 In	2500 kA²s
Power dissipation at In / 0.8 In	64.5 W / 35 W
Indication	Striker; microswitch options MC 3E, MCR 3E, MC2R 3E
Weight	1.3 kg

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