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MERSEN FUSE 300V 25A T FUSE A3T25
Reliable, fast-acting Class T blade fuse providing circuit protection up to 300 V AC and 160 V DC at 250 A with a high breaking capacity of 200 kA.
£17.61
Why Choose the Mersen A3T25 Class T Fuse?
The Mersen A3T25 is a compact and highly reliable Class T current-limiting fuse designed to protect industrial equipment, electrical distribution systems and power circuits against damaging overcurrents and short circuits. As part of the proven Mersen Amp-Trap 2000 A3T series, it provides rapid fault interruption in applications with high available fault currents.
This fuse offers excellent current-limiting performance, helping reduce the thermal and mechanical energy that reaches conductors, switches and connected equipment during a fault. Its compact Class T design allows effective circuit protection to be installed in control panels and enclosures where available mounting space is limited.
With a rated current of 25 A and a maximum voltage rating of 300 V AC, the Mersen A3T25 is suitable for industrial machinery, power distribution panels, disconnect switches and control equipment. Its blade-style terminals enable secure installation in a compatible Class T fuse holder or fuse block.
Key Advantages
- Compact Class T fuse designed for high-fault-current applications.
- 25 A current rating suitable for industrial and commercial circuits.
- 300 V AC voltage rating for low-voltage electrical systems.
- Current-limiting operation helps minimise fault energy and equipment damage.
- High interrupting capacity provides dependable short-circuit protection.
- Fast-acting performance enables rapid isolation of electrical faults.
Key Features
- Mersen Amp-Trap 2000 A3T series.
- 25 A rated current.
- 300 V AC rated voltage.
- 160 V DC rated voltage.
- UL Class T current-limiting fuse construction.
- Fast-acting overcurrent and short-circuit protection.
- Compact design for space-restricted electrical panels.
- Blade-style terminals for compatible Class T fuse holders.
Reliable Protection for Electrical Power Circuits
Current-limiting fuses such as the Mersen A3T25 interrupt severe short-circuit currents before they reach their maximum prospective value. This helps reduce let-through current and energy, protecting cables, busbars, switches and connected electrical equipment from excessive thermal and mechanical stress.
The A3T series is designed for industrial electricians, panel builders and equipment manufacturers requiring dependable protection in a compact format. Its high interrupting capacity and rapid operating response make it suitable for modern electrical installations where high fault levels may be present.
Typical Applications
- Industrial power distribution panels.
- Electrical disconnect switches.
- Feeder and branch circuit protection.
- Control panels and industrial machinery.
- Power conversion and distribution equipment.
- Battery and compatible DC power systems.
Technical Specifications
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| Current | 25 A | |
|---|---|---|
| Voltage | 300 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A3T250 | |
| Description | Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 250A Blade Amp-Trap® | |
| EAN/UPC Code | 782001890254 | |
| Rated voltage AC UL | 300 V | |
| Rated voltage DC UL | 160 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 250 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 | 33.8 mm | |
| Product Length | 69.8 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.1315 kg | |
| Sell Pack Width | 35.1 mm | |
| Sell Pack Length | 35.1 mm | |
| Sell Pack Height | 73.2 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.1234 kg | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A3T25 used for?
The Mersen A3T25 protects industrial equipment, electrical distribution systems and power circuits against excessive current and damaging short circuits.
What is the current rating of the A3T25?
The fuse has a rated current of 25 A.
What voltage is the Mersen A3T25 rated for?
The A3T25 is rated for systems operating at up to 300 V AC or 160 V DC, subject to the requirements of the installation.
Is the A3T25 a current-limiting fuse?
Yes. The A3T25 is a Class T current-limiting fuse that rapidly interrupts faults and reduces the peak current and energy passed into the protected circuit.
Which fuse holder should be used with the A3T25?
The fuse should be installed in a compatible Class T fuse holder or fuse block rated for a 25 A fuse and the applicable system voltage.
Trusted Industrial Circuit Protection
Mersen Amp-Trap Class T fuses are widely used by electrical engineers, panel builders and maintenance professionals to provide compact, reliable protection for industrial and commercial power circuits.
