Fuse Amp-Trap® 600V 800A Time-Delay Class L A4BY Series

Fuse Amp-Trap® 600V 800A Time-Delay Class L A4BY Series The Fuse Amp-Trap® A4BY Series is designed for protecting service entrance equipment, feeder circuits, and circuit breakers. This Class L fuse is a 100% rated device capable of continuous current operation up to its amperage rating. It features a 4-second minimum time delay at 500% rating, enabling it to pass normal current surges and coordinate with ground fault relays. Suitable for use in mains feeders, load centers, panelboards, switchboards, and metering centers, it is a reliable component for electrical distributors and switchgear suppliers. Specifications Manufacturer: Mersen Amperage Rating: 800 A Voltage Rating: 600 VAC, 300 VDC Interrupt Rating: 200 kA Fuse Class: Class L Connection Type: Blade Mounting Type: Bolted Dimensions (L x W x H): 8.63 in x 2 in x 2 in Insulation Material: GMG Product Weight: 3.918 lbs Manufacturer Part Number: A4BY800 Features Current-limiting fuse with uniform characteristics across all ampere ratings 4-second time-delay at 500% rating to handle normal current surges Unique dimensions prevent replacement by other fuse classes Blade stamped catalog numbers for permanent identification Glass melamine body and plated terminals for superior reliability in harsh environments UL listed and CSA certified for safety and compliance Downloads & Links Spec Sheet Curves 1 Spec Sheet FR Curves 2 Drawings