R081757 Ferraz Shawmut - Fuse

R081757 Description

Mersen R081757 is a semiconductor fuse rated at 1500 V and 1250 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 R081757 is used for protection of SCRs, diodes, thyristors, GTOs and IGBTs in rectifiers, inverters, DC drives, UPS systems, reduced voltage motor starters and other power conversion equipment up to 1500 VAC.

Key Specifications

Mersen (Ferraz Shawmut) R081757 is a Protistor PSC aR square body semiconductor fuse, size 2x93, 1250 A, 1500 VAC, French end contacts, threaded (TTF) (catalog number PC293UH15C13CTF). Source: Mersen (Ferraz Shawmut) Protistor PSC aR sizes 9x 1500 VAC square body fuses catalog (SCAC146-157).

Parameter	Value
Catalog number	PC293UH15C13CTF
Reference number	R081757
Designation	15 URH 293 TTF 1250
Rated voltage	1500 VAC (DC: consult Mersen)
Rated current	1250 A
Characteristic	aR, size 2x93
Terminals	French end contacts, threaded (TTF)
Breaking capacity	200 kA at 1500 V
Maximum I²t at 1500 V	6280 kA²s
Power losses at 0.8 In / In	131 W / 268 W
Trip indicator	Low voltage trip indicator; field-mountable microswitch MC 3E / MCR 3E / MC2R 3E (ordered separately)
Standard	Tested to IEC 60269-4 at Un +10%
Weight	3450 g

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