A4BY1200 Amp-Trap current-limiting fuse (Class L) for low-voltage power distribution delivers 1200 A at up to 600 VAC, combining time-delay operation with strong current limiting to protect circuits from overloads while minimizing let-through current. This dual-element, cylindrical fuse uses blade terminals for bolted-on mounting and carries a high interrupt rating—up to 200 kA on AC (100 kA DC) depending on installation. With a form-factor of 2-1/2 in diameter by 10-3/4 in length and UL/CSA listing, it is well-suited for feeders and motor protection in industrial panels where reliable overcurrent protection is required.
