A4BY601 - 601Amp Fuse Description
A4BY601 - 601Amp Fuse
When it comes to keeping your electrical systems safe, the Mersen A4BY601 Amp-Trap® Class L Time-Delay Fuse delivers dependable protection without compromise. Rated at 601 amps, this fuse is perfect for service entrance equipment, feeder circuits, and circuit breakers. Its smart time-delay design lets harmless surges, like motor starts or brief voltage spikes, pass without tripping, but it reacts instantly when a real fault occurs—keeping your equipment protected and downtime to a minimum.
Installation is simple with silver-plated copper blade terminals, and the sturdy glass melamine (GMG) body holds up under continuous heavy use. With a 200kA AC interrupting rating, the A4BY601 provides reliable protection for commercial and industrial systems alike. Clear markings make maintenance and replacement quick and easy, giving technicians peace of mind and saving time on the job.
Key Features and Benefits
- Time-delay design prevents trips from harmless surges
- 601A rating for medium to high-current circuits
- Rated for 600VAC / 300VDC applications
- 200kA AC interrupting capacity for fast fault clearing
- Silver-plated copper blade terminals for secure connections
- Durable GMG (glass melamine) body for long-term stability
- Continuous-duty operation at full amp rating
- Clear markings simplify identification and replacement
- Bolt-mounted installation for secure fit
Technical Specifications
- Catalog Number: A4BY601
- Series: A4BY – Class L – Time-Delay
- Fuse Class: Class L
- Ampere Rating: 601A
- 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: 50.8 mm
- Product Length: 219.2 mm
- Product Weight: 1.6511 kg
Material Compliance and Certifications
- RoHS Compliant
- UL/CSA approved for low-voltage applications
- Meets industry standards for commercial and industrial circuit protection
Where It Works Best
- The A4BY601 shines in applications that demand reliable overcurrent protection and surge tolerance:
- Service entrance panels
- Feeder circuits and distribution systems
- Industrial machinery protection
- Commercial power systems
- Circuit breakers in essential infrastructure
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Specifications
- Width:2.0
- Depth:2.0
- Height:8.625
- Amperes:601
- A.I.C. Rating & Volts:200 kA @ 600 V.AC
- Type:A4BY
- Additional Notes:Knife-Blade Style, Non-Indicating, Time-Delay, current-limiting Class L Fuse
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