Mersen A4BY1000-55BA - A4BY Current-Limiting Fuse 600V/1000A (Class J Protection)

Mersen A4BY1000-55BA is a low-voltage current-limiting fuse from the Amp-Trap family, designed for short-circuit protection in industrial electrical systems. It features a 600V AC voltage rating and 1000A current capacity, with a compact A4BY-type construction weighing 0.15 lb for space-efficient panel mounting. The fuse meets stringent industry standards for overcurrent protection with its current-limiting design that rapidly interrupts fault currents. Typical applications include motor control centers, switchgear, and power distribution panels requiring reliable circuit protection.

Key Features & Specifications

• Type: A4BY current-limiting fuse with silver element and ceramic body
• Voltage Rating: 600V AC
• Current Rating: 1000A
• Dimensions: 55mm barrel length (standard Class J footprint)
• Standards: UL 248-10, IEC 60269 compliant
• Applications: Industrial switchgear, MCCs, power distribution
• Fuse Class: J
• Weight: 0.15 lb
• Interrupt Rating: 200kA symmetrical
• Construction: Ceramic body with silver element
• Temperature Rating: -40°C to +100°C

Product Identification

• UPC: 782001938512
• GTIN: 00782001938512