R075547 Ferraz Shawmut - Fuse

R075547 Description

Rated at 250 V and 900 A, the Mersen R075547 is a semiconductor 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 R075547 is used for protection of power semiconductors (diodes, thyristors, IGBT modules) in rectifiers, AC drives, soft starters, UPS systems and other power electronic equipment with AC supply up to 250 V.

Key Specifications

Mersen (Ferraz Shawmut) R075547 is a Protistor BS88-4 semiconductor protection fuse, size 2x36x27 (double body), 900 A, 250 VAC, class aR, without trip indicator (designation URGH 236/900; catalog number BS236UH25V900). Source: Mersen Protistor BS88-4 semiconductor fuses 36x27 / 2x36x27, 250 VAC datasheet (SCAC206-207).

Parameter	Value
Catalog number	BS236UH25V900
Reference number	R075547
Designation	URGH 236/900
Standard	BS 88-4 / IEC 60269-4, VDE 636-23
Rated voltage	250 VAC
Rated current	900 A
Utilization class	aR
Size	2x36x27 (double body)
Breaking capacity	100 kA at 250 V
Pre-arcing I²t (1 ms)	134000 A²s
Total clearing I²t at 250 V	680000 A²s
Watts loss at 0.8 IN / IN	54.1 W / 108.2 W
Trip indicator	without trip indicator
Minimum operating voltage for trip indicator	20 V
Weight (approx.)	290 g

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