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

The Fuse Amp-Trap 2000® A4BQ Series is a Class L time-delay fuse designed for superior protection of service entrance equipment. It is widely used by electrical distributors and switchgear suppliers for mains feeders, large motors, lighting, heating, and general loads. This fuse also serves as circuit breaker back-up and is rated for DC applications such as UPS DC links and battery disconnects. It provides enhanced current-limiting performance to minimize short circuit let-thru current, protecting downstream components effectively.

Specifications

• Amperage Rating: 2000 A
• Voltage Rating: 600 VAC, 500 VDC
• Interrupt 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
• Diameter: 3.5 inches
• Product Weight: 8.34 lbs
• Insulation Material: GMG
• Manufacturer Part Number: A4BQ2000

Features

• 20% more current limiting than any other Class L fuse
• Built-in 4-second time-delay at 500% of rated current to accommodate harmless inrush currents without nuisance opening
• Fastest operation under short circuit conditions with up to 40% lower let-thru energy (clearing I²t)
• 300kA interrupting rating, self-certified with UL witnessed tests
• Pure silver links for lowest let-thru current and longer fuse life
• Recommended for Arc Flash energy reduction
• Easy 2-to-1 selectivity to prevent nuisance shutdowns and blackouts
• Rejection-style design to prevent replacement errors
• High-visibility orange label for instant brand recognition
• Reduced inventory needs by replacing all older types of Class L fuses currently in service
• Metal-embossed date and catalog number for traceability and lasting identification
• Fiberglass body for dimensional stability in harsh industrial environments
• High-grade silica filler ensures fast arc quenching

Downloads & Links

• Curves 3
• Spec Sheet
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• Drawings
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• Spec Sheet FR