R082378 Ferraz Shawmut - Fuse

R082378 Description

The Mersen R082378 is a semiconductor fuse, rated for 250 V and 300 A. Its job is to clear faults fast enough to save expensive semiconductors in drives, UPS units and DC supplies.

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Summary of Features

Target Applications

Ferraz Shawmut R082378 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) R082378 is a Protistor BS88-4 semiconductor protection fuse, size 36x27, 300 A, 250 VAC, class gR, with built-in trip indicator (designation URGG 36T300; catalog number BS36UG25V300T). Source: Mersen Protistor BS88-4 semiconductor fuses 36x27 / 2x36x27, 250 VAC datasheet (SCAC206-207).

Parameter	Value
Catalog number	BS36UG25V300T
Reference number	R082378
Designation	URGG 36T300
Standard	BS 88-4 / IEC 60269-4, VDE 636-23
Rated voltage	250 VAC
Rated current	300 A
Utilization class	gR
Size	36x27
Breaking capacity	100 kA at 250 V
Pre-arcing I²t (1 ms)	7290 A²s
Total clearing I²t at 250 V	49600 A²s
Watts loss at 0.8 IN / IN	18.6 W / 37.2 W
Trip indicator	with built-in trip indicator
Matching microswitch	MC 36 GR 2.5, ref. P092496
Minimum operating voltage for trip indicator	20 V
Weight (approx.)	170 g

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