Fuse Amp-Trap® 600V 2500A Time-Delay Class L A4BY Series

Fuse Amp-Trap® 600V 2500A Time-Delay Class L A4BY Series The Fuse Amp-Trap® A4BY Series is a Class L time-delay fuse designed for protecting service entrance equipment, feeder circuits, and circuit breakers. It is suitable for applications in mains feeders, load centers, panelboards, switchboards, and metering centers. This 600V fuse is rated for continuous currents up to 2500 amperes with a 4-second minimum time delay at 500% rating to handle normal current surges and coordinate with ground fault relays. The A4BY fuse is widely used by electrical distributors and switchgear suppliers for reliable current limiting protection in industrial and commercial electrical systems. Specifications Manufacturer: Mersen Manufacturer Part #: A4BY2500 Voltage Rating: 600VAC, 300VDC Amperage Rating: 2500 A Interrupt Rating: 200 kA Fuse Class: Class L Connection Type: Blade Mounting Type: Bolted Dimensions (L x W x H): 10.75 in x 4.5 in x 4.5 in Diameter: 4.5 inches Product Weight: 13.82 lbs Insulation Material: GMG (Glass Melamine) Features Current-limiting fuse with 4-second time-delay to allow normal surges 100% rated for continuous current up to ampere rating Unique dimensions prevent replacement by other fuse classes Blade stamped catalog numbers for permanent identification Glass melamine body and plated terminals ensure reliability in harsh environments UL listed and CSA certified for safety and performance Downloads & Links Spec Sheet Drawings Curves 1 Spec Sheet FR Curves 2