K078278Ferraz Shawmut - Fuse

K078278 Description

The Mersen K078278 is a semiconductor fuse rated at 1500 V and 550 A. Components of this type are commonly used in overcurrent protection of power semiconductors and power-electronic circuits.

USComponent supplies power semiconductors and industrial electronic components to engineers, OEMs and maintenance teams worldwide, including legacy and hard-to-find part numbers. Please confirm ratings, package and pin-out against the manufacturer's datasheet before ordering, and request a quote for current pricing and lead time on the K078278.

Summary of Features

Target Applications

Ferraz Shawmut K078278 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) K078278 is a Protistor PSC aR square body semiconductor fuse, size 92, 550 A, 1500 VAC, German blades DIN 140, D14A type (catalog number PC92UH15C550D4A). Source: Mersen (Ferraz Shawmut) Protistor PSC aR sizes 9x 1500 VAC square body fuses catalog (SCAC146-157).

Parameter	Value
Catalog number	PC92UH15C550D4A
Reference number	K078278
Designation	15 URH 92 D14A 0550
Rated voltage	1500 VAC (DC: consult Mersen)
Rated current	550 A
Characteristic	aR, size 92
Terminals	German blades DIN 140, D14A type
Breaking capacity	200 kA at 1500 V
Maximum I²t at 1500 V	1190 kA²s
Power losses at 0.8 In / In	61 W / 124 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%
Note	D14A types are made to order (marked * in the catalog)

Download K078278 Datasheet

K078278 PDF Datasheet