Mersen A4BQ500 Class L Time-Delay Fuse – 500A – 600VAC/500VDC – Amp-Trap 2000® Blade Fuse

The Mersen A4BQ500 is a high-performance Amp-Trap 2000® Class L time-delay fuse designed for industrial and commercial power distribution systems requiring reliable overcurrent protection. Rated at 500 Amps, this fuse provides controlled time-delay characteristics to accommodate motor starting currents and transformer inrush while delivering fast current-limiting protection under short-circuit conditions. With voltage ratings of 600VAC and 500VDC, it is suitable for feeders, service entrances, and main distribution equipment in medium-to-large electrical systems.

Voltage and Rating

• Current Rating: 500 Amps
• Voltage Rating: 600VAC / 500VDC
• Frequency: 50/60 Hz
• Fuse Class: Class L
• Fuse Type: Time-Delay, Current-Limiting

Key Specifications

• Product Type: Industrial Power Fuse
• Series: Amp-Trap 2000® A4BQ
• Part Number: A4BQ500
• Manufacturer: Mersen / Ferraz Shawmut
• Mounting Style: Blade
• Time-Delay Capability: Yes (motor and transformer inrush tolerance)
• Current Limiting: Yes

Technical Specifications

• Protection Type: Overcurrent and short-circuit protection
• Application Suitability: Main service protection, feeders, transformers, and industrial switchboards
• Coordination Type: Selective coordination in power distribution systems
• Construction Features: High interrupting capacity, low let-through energy, robust industrial-grade design
• System Integration: Designed for commercial and industrial electrical networks

Standards and Approvals

• UL Listed
• CSA Certified
• Compliant with Class L fuse protection standards

Product Data

• Manufacturer: Mersen / Ferraz Shawmut
• Series: Amp-Trap 2000®
• Part Number: A4BQ500
• EAN/UPC: 782001930707

Applications

• Industrial power distribution systems
• Commercial electrical panels
• Main feeder circuit protection
• Transformer protection
• Motor protection systems
• Switchboards and switchgear
• Critical infrastructure electrical systems
• High fault current environments

Returns are easy

You may return items within 30 days of delivery for a refund.

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