Fuse Amp-Trap® 600V 900A Time-Delay Class L A4BY Series

Fuse Amp-Trap® 600V 900A 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 use in mains feeders, load centers, panelboards, switchboards, and metering centers. This fuse is a 100% rated device, capable of continuous current operation up to its ampere rating, with a 4-second minimum time delay at 500% rating to allow normal current surges and coordination with ground fault relays. It is a reliable component for electrical distributors and switchgear suppliers requiring robust protection solutions. Specifications Amperage Rating: 900 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): 10.75 in x 2.5 in x 2.5 in Diameter: 2.5 inches Product Weight: 4.28 lbs Insulation Material: Glass Melamine (GMG) Manufacturer: Mersen Manufacturer Part Number: A4BY900 Features Current-limiting design for enhanced circuit protection 4-second minimum time delay at 500% rating to pass normal surges 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 Uniform characteristics across all ampere ratings UL listed and CSA certified for safety compliance Downloads & Links Spec Sheet Curves 1 Spec Sheet FR Drawings Curves 2