Fuse Amp-Trap® 600V 500A Time-Delay Class L A4BY Series

Fuse Amp-Trap® 600V 500A Time-Delay Class L A4BY Series The Fuse Amp-Trap® A4BY Series is a UL/CSA listed Class L power fuse designed for protecting service entrance equipment, feeder circuits, and circuit breakers. This 600V, 500A time-delay fuse is suitable for use in mains feeders, load centers, panelboards, switchboards, and metering centers. It features a 4-second minimum time delay at 500% rating to allow normal current surges while coordinating with ground fault relays, making it reliable for continuous current applications up to its ampere rating. Specifications Voltage Rating: 600VAC, 300VDC Amperage Rating: 500 A Interrupt Rating: 200 kA Fuse Class: Class L Dimensions (L x W x H): 8.63 in x 2 in x 2 in Diameter: 2 inches Mounting Type: Bolted Connection Type: Blade Insulation Material: GMG (Glass Melamine) Product Weight: 2.38 lbs Manufacturer: Mersen Manufacturer Part Number: A4BY500 Features 100% rated device for continuous current up to ampere rating 4-second minimum time delay at 500% rating to pass normal surges Current-limiting design to protect service entrance and feeder circuits Blade-stamped catalog numbers for permanent identification Glass melamine body and plated terminals for durability in harsh environments Unique dimensions prevent replacement by other fuse classes UL listed to standard 248-10 and CSA certified Self-certified for DC per UL248 Downloads & Links Spec Sheet Spec Sheet FR Curves 1 Curves 2 Drawings