A50P900-4 Ferraz - Fuse

A50P900-4 Description

Ferraz Shawmut makes the A50P900-4, a fuse. Its job is to clear faults fast enough to save expensive semiconductors in drives, UPS units and DC supplies.

USComponent has been supplying power semiconductors since 2001, including discontinued and hard-to-find part numbers. Send us an RFQ for the A50P900-4 and we will reply with price, condition and lead time. Please check the manufacturer's datasheet to confirm ratings, package and pin-out before you order.

Summary of Features

Target Applications

Ferraz A50P900-4 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) A50P900-4 is an Amp-Trap Form 101 A50P high speed fuse, 900 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	900 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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