A50P1200-4Ferraz - Fuse

A50P1200-4 Description

The Ferraz Shawmut A50P1200-4 is a fuse. This type of device is widely 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 A50P1200-4.

Summary of Features

Target Applications

Ferraz A50P1200-4 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) A50P1200-4 is an Amp-Trap Form 101 A50P high speed fuse, 1200 A, 500 VAC, 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	1200 A
Rated voltage	500 VAC
Interrupting rating	100 kA AC
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

Download A50P1200-4 Datasheet

A50P1200-4 PDF Datasheet