A50P1000-4 Ferraz - Fuse

A50P1000-4 Description

Ferraz Shawmut A50P1000-4 is a fuse. 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 A50P1000-4 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) A50P1000-4 is an Amp-Trap Form 101 A50P high speed fuse, 1000 A, 500 VAC / 450 VDC, blade, bolt-in 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	1000 A
Rated voltage	500 VAC / 450 VDC
Interrupting rating	100 kA AC / 79 kA DC (L/R 10 ms)
Mounting type	4: blade, bolt-in
Characteristics	Very fast acting, current limiting, low I²t, controlled arc voltage
Approvals	Not listed as UL recognized in the datasheet range (AC/DC UL: up to 800 A)
Overall length (A)	6.97 in (177 mm)
Body diameter / width (B)	2.88 in (73 mm)
Mounting hole centres (D)	138.9 mm
Matching fuse block	FH50F5

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