D122GD75V500EF Ferraz Shawmut - Fuse

D122GD75V500EF Description

The Mersen D122GD75V500EF is a DC high speed fuse, rated for 750 V and 500 A. Fast-acting fuses like this are used to protect rectifiers, inverters and other power-electronic circuits against short circuits.

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Summary of Features

Target Applications

Ferraz Shawmut D122GD75V500EF 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) D122GD75V500EF is a Protistor size 122 gR square body high speed fuse for DC protection, 500 A, 750 VDC (IEC), blade contacts (EF), with striker (item number Q220952). Source: Mersen Protistor size 122 gR 750 VDC datasheet (DS-PFSA12GD2-06-1224-EN).

Parameter	Value
Catalog number	D122GD75V500EF
Item number	Q220952
Rated voltage	750 VDC (IEC 60269-4)
Rated current	500 A
Characteristic	gR, size 122
Terminals	blade contacts (EF)
Breaking capacity	100 kA DC
Pre-arcing I²t	103 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 50 In	1200 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 10 In	6200 kA²s
Power dissipation at In / 0.8 In	95 W / 52 W
Indication	Striker; microswitch options MC 3E, MCR 3E, MC2R 3E
Weight	1.3 kg

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