D122GD75V450EF Ferraz Shawmut - Fuse

D122GD75V450EF Description

Rated at 750 V and 450 A, the Mersen D122GD75V450EF is a DC high speed fuse. 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 D122GD75V450EF 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) D122GD75V450EF is a Protistor size 122 gR square body high speed fuse for DC protection, 450 A, 750 VDC (IEC), blade contacts (EF), with striker (item number P220951). Source: Mersen Protistor size 122 gR 750 VDC datasheet (DS-PFSA12GD2-06-1224-EN).

Parameter	Value
Catalog number	D122GD75V450EF
Item number	P220951
Rated voltage	750 VDC (IEC 60269-4)
Rated current	450 A
Characteristic	gR, size 122
Terminals	blade contacts (EF)
Breaking capacity	100 kA DC
Pre-arcing I²t	63.5 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 50 In	800 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 10 In	4000 kA²s
Power dissipation at In / 0.8 In	90 W / 49 W
Indication	Striker; microswitch options MC 3E, MCR 3E, MC2R 3E
Weight	1.3 kg

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