Why Choose the Mersen A3T45 Class T Fast-Acting Fuse?
The Mersen A3T45 is a high-performance Class T fast-acting fuse engineered to provide superior overcurrent protection for industrial electrical distribution systems. Part of the trusted Mersen Amp-Trap® A3T series, this fuse delivers exceptional current-limiting performance while protecting valuable electrical equipment from short circuits and fault currents.
Designed with a compact footprint and high interrupting capacity, the A3T45 is ideal for applications where space is limited without compromising protection. Its unique Class T dimensions prevent substitution with lower-performance fuse classes, helping maintain electrical safety and system compliance.
With a 45 A current rating, 300 V AC / 160 V DC voltage rating and fast-acting characteristics, the Mersen A3T45 is widely used in switchboards, panelboards, load centres, metering equipment and industrial power distribution systems requiring rapid fault interruption.
Key Advantages
- Compact Class T fast-acting fuse for industrial protection.
- 45 A current rating for branch circuit and equipment protection.
- 300 V AC / 160 V DC rated voltage.
- Exceptional current-limiting performance reduces equipment damage.
- Unique Class T dimensions prevent incorrect fuse replacement.
- Suitable for demanding commercial and industrial electrical installations.
Key Features
- Mersen Amp-Trap® A3T Class T fuse series.
- Fast-acting fuse characteristic.
- 45 A rated current.
- 300 V AC / 160 V DC voltage rating.
- 50 / 60 Hz operation.
- Ferrule construction with glass melamine body.
- Extremely current-limiting design.
- Permanent catalogue number identification.
Reliable Circuit Protection for Industrial Systems
The Mersen A3T45 is designed to interrupt fault currents almost instantly, helping minimise equipment damage, reduce downtime and improve overall electrical system reliability. Its high current-limiting capability significantly lowers let-through energy during fault conditions, protecting downstream components.
As part of the Amp-Trap® Class T family, this fuse is commonly selected by electrical engineers, panel builders and maintenance professionals for installations where dependable overcurrent protection and compact installation are essential.
Typical Applications
- Industrial switchboards.
- Electrical panelboards.
- Load centres.
- Metering equipment.
- Circuit breaker protection.
- Commercial and industrial power distribution systems.
