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MERSEN FUSE 300V 500A T FUSE A3T500
Fast-acting Class T blade fuse rated 300 V AC and 160 V DC at 500 A with 200 kA interrupting capacity, designed for industrial and commercial circuit protection.
£114.79
Why Choose the Mersen A3T500 Class T Fast-Acting Fuse?
The Mersen A3T500 is a premium Class T fast-acting fuse engineered to provide exceptional overcurrent and short-circuit protection for industrial and commercial electrical distribution systems. As part of the proven Mersen Amp-Trap® A3T series, it delivers outstanding current-limiting performance in a compact package, helping protect critical electrical equipment from costly damage caused by fault currents.
Designed with a robust glass melamine body and heavy-duty blade terminals, the A3T500 offers excellent dimensional stability and reliable long-term performance. Its unique Class T dimensions prevent substitution with lower-performance fuse types, ensuring safe and compliant installations.
With a 500 A current rating, 300 V AC / 160 V DC voltage rating and a high interrupting capacity, the Mersen A3T500 is ideal for protecting switchboards, panelboards, circuit breakers, metering centres and industrial power distribution equipment where rapid fault interruption is essential.
Key Advantages
- Compact Class T fast-acting fuse for industrial electrical protection.
- 500 A current rating for high-current applications.
- 300 V AC / 160 V DC rated voltage.
- Extremely current-limiting design reduces equipment damage during fault conditions.
- Unique Class T dimensions prevent incorrect fuse replacement.
- High interrupting capacity for demanding industrial installations.
Key Features
- Mersen Amp-Trap® A3T Class T fuse series.
- Fast-acting fuse characteristic.
- 500 A rated current.
- 300 V AC / 160 V DC voltage rating.
- 50 / 60 Hz operation.
- Heavy-duty blade terminal construction.
- Glass melamine body for superior dimensional stability.
- Permanent blade-stamped catalogue identification.
Reliable Circuit Protection for High-Power Systems
The Mersen A3T500 is engineered to clear high fault currents rapidly, minimising thermal and mechanical stress on downstream equipment. Its advanced current-limiting performance helps improve electrical system reliability while extending the service life of switchgear, transformers and other critical components.
Widely specified by electrical engineers, OEMs and panel builders, the Amp-Trap® A3T series provides dependable overcurrent protection for industrial installations where compact size, rapid fault interruption and high performance are essential.
Typical Applications
- Industrial switchboards.
- Power distribution panels.
- Load centres.
- Circuit breakers.
- Metering centres.
- Commercial and industrial electrical distribution systems.
Technical Specifications
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| Current | 500 A | |
|---|---|---|
| Voltage | 300 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A3T500 | |
| Description | Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 500A Blade Amp-Trap® | |
| EAN/UPC Code | 782001890308 | |
| Rated voltage AC UL | 300 V | |
| Rated voltage DC UL | 160 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 500 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 | 41.1 mm | |
| Product Length | 77.7 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.2132 kg | |
| Sell Pack Width | 42.9 mm | |
| Sell Pack Length | 42.9 mm | |
| Sell Pack Height | 81 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.2023 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A3T500 used for?
The A3T500 provides fast-acting overcurrent protection for high-current industrial and commercial electrical distribution systems.
What is the current rating of the A3T500?
The fuse has a 500 A current rating.
What voltage is the A3T500 rated for?
The fuse is rated for 300 V AC and 160 V DC.
What type of fuse is the A3T500?
It is a Class T fast-acting blade fuse from the Mersen Amp-Trap® range.
Where is the A3T500 typically installed?
It is commonly installed in switchboards, panelboards, circuit breakers, load centres and industrial power distribution equipment.
Trusted by Electrical Professionals Worldwide
Mersen Amp-Trap® Class T fuses are trusted by electrical engineers, OEMs and panel builders worldwide for delivering exceptional current limitation, dependable overcurrent protection and long service life in demanding industrial electrical systems.
