Why Choose the Mersen A3T500 Class T Fast-Acting Fuse?
The Mersen A3T500 is a premium Class T fast-acting fuse engineered to provide exceptional overcurrent and short-circuit protection for industrial and commercial electrical distribution systems. As part of the proven Mersen Amp-Trap® A3T series, it delivers outstanding current-limiting performance in a compact package, helping protect critical electrical equipment from costly damage caused by fault currents.
Designed with a robust glass melamine body and heavy-duty blade terminals, the A3T500 offers excellent dimensional stability and reliable long-term performance. Its unique Class T dimensions prevent substitution with lower-performance fuse types, ensuring safe and compliant installations.
With a 500 A current rating, 300 V AC / 160 V DC voltage rating and a high interrupting capacity, the Mersen A3T500 is ideal for protecting switchboards, panelboards, circuit breakers, metering centres and industrial power distribution equipment where rapid fault interruption is essential.
Key Advantages
- Compact Class T fast-acting fuse for industrial electrical protection.
- 500 A current rating for high-current applications.
- 300 V AC / 160 V DC rated voltage.
- Extremely current-limiting design reduces equipment damage during fault conditions.
- Unique Class T dimensions prevent incorrect fuse replacement.
- High interrupting capacity for demanding industrial installations.
Key Features
- Mersen Amp-Trap® A3T Class T fuse series.
- Fast-acting fuse characteristic.
- 500 A rated current.
- 300 V AC / 160 V DC voltage rating.
- 50 / 60 Hz operation.
- Heavy-duty blade terminal construction.
- Glass melamine body for superior dimensional stability.
- Permanent blade-stamped catalogue identification.
Reliable Circuit Protection for High-Power Systems
The Mersen A3T500 is engineered to clear high fault currents rapidly, minimising thermal and mechanical stress on downstream equipment. Its advanced current-limiting performance helps improve electrical system reliability while extending the service life of switchgear, transformers and other critical components.
Widely specified by electrical engineers, OEMs and panel builders, the Amp-Trap® A3T series provides dependable overcurrent protection for industrial installations where compact size, rapid fault interruption and high performance are essential.
Typical Applications
- Industrial switchboards.
- Power distribution panels.
- Load centres.
- Circuit breakers.
- Metering centres.
- Commercial and industrial electrical distribution systems.
