Mersen A4BY1200-55AL - Amp-Trap Fuse 600V 1200A (UL 248/IEC 60269)

Mersen A4BY1200-55AL is a low-voltage Amp-Trap fuse designed for high-current circuit protection in industrial power distribution systems. It features a 600V AC voltage rating and 1200A current interrupting capacity, housed in a compact 0.15 lb UL-recognized ceramic body with precision-engineered silver alloy elements. The fuse meets UL 248 and IEC 60269 standards for time-delay protection, specifically engineered for motor branch circuits and feeder protection applications where high fault currents may occur.

Key Features & Specifications

• Type: A4BY time-delay low-voltage current-limiting fuse
• Voltage Rating: 600V AC
• Current Rating: 1200A
• Dimensions: Standard Amp-Trap 55AL frame size
• Standards: UL 248, IEC 60269 compliant
• Applications: Motor protection, switchgear, industrial power distribution
• Weight: 0.15 lb
• Fuse Class: Current-limiting time-delay
• Construction: Ceramic body with silver alloy elements
• Interrupt Rating: 200kA symmetrical

Product Identification

• UPC: 078200193762
• GTIN: 00782001937621