Mersen A4BQ800 Class L Time-Delay Fuse – 800A – 600VAC/500VDC – Amp-Trap 2000® Blade Fuse
Couldn't load pickup availability
Ask an expert
The Mersen A4BQ800 is a high-capacity Amp-Trap 2000® Class L time-delay fuse designed for industrial and commercial power distribution systems requiring dependable overcurrent protection and high fault-current interruption capability. Rated at 800 Amps, this current-limiting fuse is engineered to withstand motor starting currents and transformer inrush conditions while rapidly clearing fault currents to help protect electrical equipment and maintain system reliability. With voltage ratings of 600VAC and 500VDC, it is ideal for service entrance equipment, feeders, switchgear, and large power distribution networks.
Voltage and Rating
- Current Rating: 800 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: A4BQ800
- Manufacturer: Mersen / Ferraz Shawmut
- Mounting Style: Blade
- Time-Delay Capability: Yes (motor and transformer inrush tolerant)
- Current Limiting: Yes
Technical Specifications
- Protection Type: Overcurrent and short-circuit protection
- Application Suitability: Service entrances, feeder circuits, transformers, switchboards, and industrial power distribution systems
- Coordination Type: Supports selective coordination with downstream protective devices
- Construction Features: High interrupting capacity, low let-through energy, rugged industrial-grade construction
- System Integration: Designed for commercial, industrial, and critical power applications
Standards and Approvals
- UL Listed
- CSA Certified
- Compliant with Class L fuse protection requirements
Product Data
- Manufacturer: Mersen / Ferraz Shawmut
- Series: Amp-Trap 2000®
- Part Number: A4BQ800
- EAN/UPC: 782001939373
Applications
- Industrial power distribution systems
- Commercial electrical service equipment
- Main feeder protection
- Transformer protection
- Motor control and protection systems
- Switchboards and switchgear assemblies
- Critical infrastructure facilities
- High fault current environments
- Manufacturing and processing plants
- Utility and energy distribution systems
- Type Fuses
- Vendor Mersen
- Brand Mersen
Returns are easy
You may return items within 30 days of delivery for a refund.
FREE Shipping on orders over $149.
My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.