B090437 Ferraz Shawmut - Fuse

B090437 Description

The B090437 from Mersen is a DC high speed fuse with a 750 V / 250 A rating. It protects power semiconductors such as diodes, thyristors and IGBTs from short-circuit damage in drives, rectifiers and UPS systems.

USComponent has sourced power semiconductors for maintenance teams and OEMs since 2001. For price and availability of the B090437, send us a request for quote. Please confirm the specifications against the manufacturer's datasheet before purchase.

Summary of Features

Target Applications

Ferraz Shawmut B090437 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) B090437 is a Protistor size 122 gR square body high speed fuse for DC protection, 250 A, 750 VDC (IEC), M10 threaded terminals (TTF), with striker (catalog number D122GC75V250TF). Source: Mersen Protistor size 122 gR 750 VDC datasheet (DS-PFSA12GD2-06-1224-EN).

Parameter	Value
Catalog number	D122GC75V250TF
Item number	B090437
Rated voltage	750 VDC (IEC 60269-4)
Rated current	250 A
Characteristic	gR, size 122
Terminals	M10 threaded terminals (TTF)
Breaking capacity	100 kA DC
Pre-arcing I²t	18.05 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 50 In	250 kA²s
Max. I²t at 900 V, L/R = 40 ms, Ip = 10 In	1250 kA²s
Power dissipation at In / 0.8 In	46.7 W / 25.5 W
Indication	Striker; microswitch options MC 3E, MCR 3E, MC2R 3E
Weight	1.43 kg

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