Mersen A4BQ900 Class L Time-Delay Fuse – 900A – 600VAC/500VDC – Amp-Trap 2000® Blade Fuse
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The Mersen A4BQ900 is a high-capacity Amp-Trap 2000® Class L time-delay fuse engineered for demanding industrial and commercial power distribution systems. Rated at 900 Amps, this current-limiting fuse provides reliable protection against overloads and short circuits while accommodating temporary motor starting currents and transformer inrush conditions. With voltage ratings of 600VAC and 500VDC, it is ideally suited for service entrance equipment, feeder circuits, switchgear, and large-scale electrical distribution networks where dependable fault protection and system coordination are essential.
Voltage and Rating
- Current Rating: 900 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: A4BQ900
- 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 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: A4BQ900
- EAN/UPC: 782001930059
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.
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