D122GC75V350EF Ferraz Shawmut - Fuse

D122GC75V350EF Description

D122GC75V350EF is a 750 V, 350 A DC high speed fuse made by Mersen. It protects power semiconductors such as diodes, thyristors and IGBTs from short-circuit damage in drives, rectifiers and UPS systems.

We help engineers and repair technicians find parts like the D122GC75V350EF, including obsolete ones. Send a quick RFQ for current pricing and delivery. Before ordering, please confirm ratings and pin-out with the official datasheet.

Summary of Features

Target Applications

Ferraz Shawmut D122GC75V350EF 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) D122GC75V350EF is a Protistor size 122 gR square body high speed fuse for DC protection, 350 A, 750 VDC (IEC), blade contacts (EF), with striker (item number W221141). 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

Technical document (PDF)  |  Request a quote for D122GC75V350EF (reply within 24 hours)