Fuse Amp-Trap® 600V 450A Time-Delay Class L A4BY Series

Fuse Amp-Trap® 600V 450A Time-Delay Class L A4BY Series The Fuse Amp-Trap® A4BY Series is designed for protection of service entrance equipment, feeder circuits, and circuit breakers, making it suitable for electrical distributors and lighting solutions requiring reliable wire and cable protection. This Class L 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, allowing it to handle normal current surges and coordinate with ground fault relays effectively. It is commonly used in mains feeders, load centers, panelboards, switchboards, and metering centers. Specifications Amperage Rating: 450 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: 2.38 lbs Manufacturer Part Number: A4BY450 Features Current-limiting fuse with 4-second time-delay to pass normal surges Unique dimensions to 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/CSA listed and self-certified for DC applications Downloads & Links Spec Sheet Spec Sheet FR Curves 1 Curves 2 Drawings