A4BQ250 - Mersen Amp-Trap 2000 Class L Time-Delay Fuse, 250A, 600VAC/500VDC, 300kA Interrupt Rating, 2" x 8-5/8", UL Listed, Arc Flash Mitigating, Service Entrance Protection

A4BQ250

A4BQ250 is a Mersen Amp-Trap 2000 Class L time-delay fuse designed for superior current-limiting protection in service entrance and feeder applications.

This fuse offers 20% more current-limiting performance than any other Class L fuse, with a built-in 4-second time-delay at 500% of rated current to accommodate inrush currents without nuisance tripping. It provides maximum protection for downstream equipment by significantly reducing peak let-through current and clearing I²t energy during short circuits. The A4BQ250 is UL listed, CSA approved, and features arc flash mitigation for enhanced safety.

Key Specifications
• Amperage: 250A
• Voltage: 600VAC, 500VDC
• Poles: 1
• Mounting Type: Blade (Class L)
• Interrupt Rating: 300kA (self-certified, UL witnessed)
• Series/Frame: Amp-Trap 2000
• Trip Unit: Time-delay (4 seconds at 500% rated current)
• Certifications: UL, CSA C22.2
• Physical Size: 2" diameter x 8-5/8" length
• Application: Mains, feeders, service entrance
• Feature: Most current-limiting Class L fuse available
• Feature: Arc flash mitigating

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Specifications

• Part Number: A4BQ250
• Manufacturer : Mersen
• Brand : Mersen
• Category : Fuse
• Item Subcategory : Low Voltage Fuse
• Family : Amp-Trap 2000
• Type : A4BQ
• Voltage : 600
• Amperage : 250
• AIC rating : 200kA@600V
• Diameter : 2
• Class Rating : L
• Barrels : 1

Product Data

• UPC : 78200193110
• GTIN : 00782001931100
• Country of Origin : Mexico
• Dimensions : x 8-5/8 in x
• Weight : 2
• Certification : CSA, UL