Fuse Amp-Trap 2000® 600V 500A Time-Delay Class L A4BQ Series

Fuse Amp-Trap 2000® 600V 500A Time-Delay Class L A4BQ Series The Fuse Amp-Trap 2000® A4BQ Series is a Class L time-delay fuse designed for superior current-limiting protection in electrical distribution systems. It is suitable for applications including mains, feeders, large motors, lighting, heating, general loads, and circuit breaker back-up. This fuse also supports DC rated applications such as UPS DC links and battery disconnects. The A4BQ fuse provides enhanced protection to service entrance equipment by limiting short circuit let-thru current and accommodating harmless inrush currents with its 4-second time-delay characteristic. Specifications Amperage Rating: 500 A Voltage Rating: 600 VAC / 500 VDC Interrupt Rating: 200 kA Fuse Class: Class L Mounting Type: Bolted Connection: Blade Dimensions: Length 8.63 in, Width 2 in, Height 2 in, Diameter 2 in Insulation Material: GMG Product Weight: 2.626 lbs Manufacturer Part Number: A4BQ500 Manufacturer: Mersen Features 20% more current limiting than other Class L fuses 4-second built-in time-delay at 500% rated current to avoid nuisance opening on inrush currents Fastest operation under short circuit conditions with up to 40% lower let-thru energy 300kA interrupting rating with UL witnessed, self-certified tests Pure silver links for lowest let-thru current and extended fuse life Rejection-style design to prevent replacement errors High-visibility orange label for instant brand recognition Metal-embossed date and catalog number for traceability Fiberglass body ensures dimensional stability in harsh industrial environments High-grade silica filler for fast arc quenching Recommended for Arc Flash energy reduction Easy 2-to-1 selectivity to prevent nuisance shutdowns and blackouts Reduced inventory by replacing all older Class L fuse types currently in service Downloads & Links Spec Sheet Drawings Spec Sheet FR Curves 1 Curves 2