Why Choose the Mersen A3T90 Class T Fuse?
The Mersen A3T90 is a compact and dependable Class T current-limiting fuse designed to protect industrial electrical equipment, conductors and power distribution systems against damaging overcurrent and short-circuit conditions. As part of the established Mersen Amp-Trap 2000 A3T series, it combines fast fault interruption, high current-limiting performance and a space-saving fuse format.
With a rated current of 90 A and a maximum voltage rating of 300 V AC, the A3T90 is suitable for circuits where high available fault currents require rapid and reliable protection. Its current-limiting operation reduces peak let-through current and energy, helping minimise thermal and mechanical stress on cables, switches, busbars and connected equipment.
The compact Class T construction makes the Mersen A3T90 ideal for installation in electrical panels, fused disconnects, industrial machinery and power distribution assemblies where panel space is limited. It is designed for use with a correctly rated Class T fuse holder and provides reliable protection across demanding commercial and industrial applications.
Key Advantages
- Compact Class T fuse designed for industrial circuit protection.
- 90 A current rating for demanding electrical loads.
- 300 V AC voltage rating for commercial and industrial systems.
- High 200 kA RMS symmetrical AC interrupting rating.
- Current-limiting performance reduces damaging fault energy.
- Fast-acting operation helps protect conductors and electrical equipment.
Key Features
- Mersen Amp-Trap 2000 A3T series.
- 90 A rated current.
- 300 V AC maximum voltage rating.
- Class T current-limiting fuse construction.
- Fast-acting overcurrent and short-circuit protection.
- High interrupting capacity for substantial available fault currents.
- Compact body for space-restricted electrical panels.
- Blade-style terminals for compatible Class T fuse holders.
Reliable Protection for High Fault-Current Circuits
Current-limiting fuses such as the Mersen A3T90 interrupt excessive current before it reaches its maximum prospective value. This reduces the electrical energy passed through the circuit during a fault and helps protect downstream components from severe thermal and mechanical damage.
The Amp-Trap 2000 A3T range is engineered for installations requiring dependable short-circuit protection in a compact footprint. Its high interrupting rating makes the A3T90 suitable for industrial systems where conventional fuse designs may not provide sufficient fault-current protection.
Typical Applications
- Industrial power distribution panels.
- Electrical disconnect switches and fused switches.
- Motor control centres and industrial machinery.
- Commercial electrical distribution equipment.
- Control panels and automation systems.
- Power conversion and electrical protection assemblies.
