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MERSEN FUSE 300V 90A T FUSE A3T90
Fast-acting Class T fuse rated for 300VAC and 160VDC at 90A with a high interrupting rating of 200 kA, featuring a compact blade design and bolted mounting.
£26.31
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.
Technical Specifications
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| Current | 90 A | |
|---|---|---|
| Voltage | 300 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A3T90 | |
| Description | Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 90A Blade Amp-Trap® | |
| EAN/UPC Code | 782001890179 | |
| Rated voltage AC UL | 300 V | |
| Rated voltage DC UL | 160 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 90 A | |
| AC or DC | AC/DC | |
| Fuse Class | Class T | |
| Speed/Characteristic | Fast-Acting | |
| Mounting | Bolted | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Connection/Terminal Material | Copper | |
| Connection/Terminal Type | Blade | |
| Product Diameter | 20.6 mm | |
| Product Length | 54.9 mm | |
| Sell Pack Quantity | 5 EA | |
| Sell Pack Weight | 0.1769 kg | |
| Sell Pack Width | 23.9 mm | |
| Sell Pack Length | 104.6 mm | |
| Sell Pack Height | 58.7 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.034 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A3T90 used for?
The Mersen A3T90 is used to protect industrial and commercial electrical circuits against overloads and high-level short-circuit currents.
What is the current rating of the A3T90?
The fuse has a rated current of 90 A.
What voltage is the Mersen A3T90 rated for?
The A3T90 is rated for electrical systems operating at up to 300 V AC.
Is the A3T90 a current-limiting fuse?
Yes. The A3T90 is a Class T current-limiting fuse designed to reduce peak fault current and the amount of damaging energy passed to downstream equipment.
Which fuse holder is required for the A3T90?
The fuse must be installed in a compatible Class T fuse holder rated for 90 A and the applicable system voltage.
Trusted Industrial Circuit Protection
Mersen Amp-Trap Class T fuses are widely specified by electrical engineers, panel builders and industrial maintenance professionals for compact, reliable protection in systems with high available short-circuit currents.
