A50P1200-4 Ferraz - Fuse

A50P1200-4 Description

Ferraz Shawmut makes the A50P1200-4, a fuse. Fast-acting fuses like this are used to protect rectifiers, inverters and other power-electronic circuits against short circuits.

USComponent has sourced power semiconductors for maintenance teams and OEMs since 2001. For price and availability of the A50P1200-4, send us a request for quote. Please confirm the specifications against the manufacturer's datasheet before purchase.

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

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