A50P25-1 Ferraz Shawmut - Fuse

A50P25-1 Description

A50P25-1 is a 500 V, 25 A high speed fuse made by Mersen. It protects power semiconductors such as diodes, thyristors and IGBTs from short-circuit damage in drives, rectifiers and UPS systems.

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Summary of Features

Target Applications

Ferraz Shawmut A50P25-1 is used for protection of DC drives, uninterruptible power supplies (UPS) and other power electronic equipment of 500 V or less, including power semiconductor (diode, thyristor, IGBT) protection.

Key Specifications

Mersen (Ferraz Shawmut) A50P25-1 is an Amp-Trap Form 101 A50P high speed fuse, 25 A, 500 VAC, ferrule mounting. Source: Mersen A50P Amp-Trap Form 101 datasheet (HS 14-15, 2025).

Parameter	Value
Series	A50P Amp-Trap Form 101 high speed fuse
Rated current	25 A
Rated voltage	500 VAC
Interrupting rating	100 kA AC
Mounting type	1: ferrule
Characteristics	Very fast acting, current limiting, low I²t, controlled arc voltage
Approvals	UL Recognized Component (JFHR2, file 60314): AC
Overall length (A)	2.00 in (50.8 mm)
Body diameter / width (B)	0.56 in (14.2 mm)
Matching fuse block	70316

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