Fuse Amp-Trap® 600V 1800A Time-Delay Class L A4BY Series

Fuse Amp-Trap® 600V 1800A Time-Delay Class L A4BY Series The Amp-Trap® A4BY fuse is a UL/CSA listed Class L power fuse designed for protecting service entrance equipment, feeder circuits, circuit breakers, load centers, panelboards, switchboards, and metering centers. This current-limiting fuse features a 4-second minimum time-delay at 500% rating, enabling it to pass normal current surges and coordinate effectively with ground fault relays. It is suitable for continuous current applications up to its ampere rating and is a reliable choice for electrical distributors and switchgear suppliers requiring robust protection solutions. Specifications Voltage Rating: 600 VAC, 300 VDC Amperage Rating: 1800 A Interrupting Rating: 200 kA Fuse Class: Class L Connection: Blade Mounting Type: Bolted Dimensions (L x W x H): 10.75 in x 3.5 in x 3.5 in Product Weight: 8.46 lbs Insulation Material: GMG (Glass Melamine) Manufacturer Part Number: A4BY1800 Features Current-limiting design with uniform characteristics across all ampere ratings 4-second time-delay at 500% rating to allow normal current surges Blade-stamped catalog numbers for permanent identification Glass melamine body and plated terminals provide superior reliability in harsh environments Unique dimensions prevent replacement by other fuse classes, ensuring proper fit and safety UL listed to standard 248-10 and CSA certified for industrial electrical applications Self-certified for DC applications per UL248 standards Downloads & Links Spec Sheet Curves 1 Spec Sheet FR Drawings Curves 2