Why Choose the Mersen A3T125 Amp-Trap® Class T Fuse?
The Mersen A3T125 is a compact, fast-acting Class T current-limiting fuse designed to protect industrial and commercial electrical systems against damaging short circuits and overcurrent conditions. As part of the established Mersen Amp-Trap® A3T series, it combines rapid fault interruption with high current limitation to help safeguard conductors, switchgear and connected equipment.
The A3T125 delivers a high interrupting capacity within a relatively small physical format, making it suitable for installations where panel space is limited. Its unique Class T dimensions help prevent substitution with fuses offering lower voltage ratings or reduced current-limiting performance, while its glass melamine body provides excellent dimensional stability.
With a rated current of 125 A, a 300 V AC rating and a 160 V DC rating, the Mersen A3T125 is ideal for panelboards, switchboards, load centres, metering equipment and industrial power distribution systems requiring dependable high-speed circuit protection.
Key Advantages
- Fast-acting Class T current-limiting fuse for industrial circuit protection.
- 125 A rated current for power distribution applications.
- 300 V AC and 160 V DC voltage ratings.
- High current limitation helps reduce damaging peak fault currents.
- Compact dimensions support space-efficient electrical panel designs.
- Unique Class T construction helps prevent substitution with unsuitable fuse types.
Key Features
- Mersen Amp-Trap® A3T series.
- UL Class T fuse design.
- 125 A rated current.
- 300 V AC / 160 V DC rated voltage.
- Fast-acting, current-limiting operating characteristic.
- 200 kA AC interrupting rating.
- Glass melamine body for superior dimensional stability.
- Copper blade terminals with permanent catalogue identification.
Reliable Current-Limiting Circuit Protection
Current-limiting fuses such as the Mersen A3T125 interrupt severe fault currents before they reach their maximum prospective value. This helps reduce the thermal and mechanical forces placed on conductors, switchgear, busbars and connected equipment during a short circuit.
The compact Class T format combines excellent current limitation with a high interrupting capacity. This makes the A3T125 particularly suitable for power distribution systems where dependable fault clearance, equipment protection and efficient use of enclosure space are essential.
Typical Applications
- Industrial panelboards and distribution panels.
- Switchboards and electrical switchgear.
- Load centres and metering centres.
- Industrial machinery and control equipment.
- Power distribution assemblies.
- Commercial electrical installations.
- Power conversion and battery systems.
