APPROVALS & STANDARDS Mersen Self-Certification, UL Listed to Standard 248-10, File E2137 CSA Certified to Standard C22.2, No. 248.10 IEC 269-2-1 DC Tested to UL 248 limits (Mersen Self-Certified) KEY FEATURES & BENEFITS Amp-Trap A4BY fuses have been the industry's favorite when it comes to protecting service entrance equipment, feeder circuits, and circuit breakers. The A4BY is a 100percent rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time delay at 500percent rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays. Unique dimensions prevent replacement by other fuse classes Blade-stamped catalog numbers for permanent identification Glass melamine body and plated terminals provide superior reliability in harsh environments APPLICATIONS Mains Feeders Circuit Breakers Load centers Panelboards Switchboards Metering Centers Item Number A4BY800 Item Description (ERP) L TD FUSE 600V 800A A4BY Short Description Fuse Amp-Trap® 600V 800A Time-Delay Class L A4BY Series EAN/UPC Code 782001939113 Rated voltage AC UL 600 V Rated voltage DC UL 300 V Ampere Rating 800 A ROHS Compliant Yes Fuse Class Class L Speed/Characteristic Time Delay Mounting Bolted AC Max I.R./Breaking Capacity: I1 200 kA Connection/Terminal Material Silver-Plated Copper Connection/Terminal Type Blade Body/Insulating Material GMG