Mersen
A4BY2000 - 2000Amp Fuse
A4BY2000 - 2000Amp Fuse
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A4BY2000 - 2000Amp Fuse
Protecting high-current electrical systems has never been easier than with the Mersen A4BY2000 Amp-Trap® Class L Time-Delay Fuse. With a 2000A rating, this fuse is engineered to handle heavy-duty service entrance equipment, feeder circuits, and circuit breakers. Its time-delay design allows it to ride through harmless surges, like motor startups or brief spikes, without tripping unnecessarily, while still acting fast when a true fault occurs. That means your equipment stays safe, and your operations keep running smoothly. Designed with silver-plated copper blade terminals and a durable glass melamine (GMG) body, the A4BY2000 ensures reliable connections and long-lasting performance. High interrupting capacity of 200kA AC gives you the confidence that even the toughest electrical faults are managed safely and efficiently.
Key Features and Benefits
- Time-delay design passes harmless surges without tripping
- 2000A rating for high-current service entrance and feeder circuits
- Rated for 600VAC / 300VDC applications
- 200kA AC interrupting capacity for fast fault clearing
- Silver-plated copper blade terminals provide secure, reliable connections
- Durable GMG (glass melamine) body maintains stability under load
- Continuous-duty operation at full ampere rating
- Clear markings simplify identification and replacement
- Bolt-mounted installation for secure connections
Technical Specifications
- Catalog Number: A4BY2000
- Series: A4BY – Class L – Time-Delay
- Fuse Class: Class L
- Ampere Rating: 2000A
- Voltage Rating: 600VAC / 300VDC
- Frequency: 50/60 Hz
- Speed/Characteristic: Time-Delay
- Mounting: Bolted
- Connection Type: Blade
- Connection Material: Silver-Plated Copper
- AC Max Interrupting Rating: 200kA
- Body Material: GMG (Glass Melamine)
- Product Diameter: 88.9 mm
- Product Length: 273 mm
- Product Weight: 3.8374 kg
Material Compliance and Certifications
- RoHS Compliant
- Designed for low-voltage UL/CSA applications
Where It Works Best
- Service entrance panels
- Feeder circuits and distribution systems
- Industrial machinery protection
- Commercial power systems
- Circuit breakers in critical electrical infrastructure
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