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MERSEN FUSE 300V 700A T FUSE A3T700
The A3T700 Class T Fast-Acting Fuse delivers rapid short-circuit protection for demanding industrial and commercial applications, accommodating up to 700A at 300VAC or 160VDC. Its compact blade design ensures easy installation and reliable performance in space-constrained panel assemblies.
£372.49
Why Choose the Mersen A3T700 Amp-Trap Class T Fuse?
The Mersen A3T700 is a high-capacity Amp-Trap 2000 Class T fast-acting fuse designed to protect industrial electrical equipment, switchboards and power distribution systems against damaging overcurrent and short-circuit conditions. Its advanced current-limiting design rapidly interrupts fault currents, helping to minimise thermal and mechanical stress on downstream equipment while improving overall system protection.
Rated at 700 A, 300 V AC and 160 V DC, the Mersen A3T700 combines exceptional interrupting performance with the compact dimensions of a Class T fuse. Its unique physical design prevents substitution with lower-performance fuse classes, improving electrical safety and coordination.
The A3T700 is widely specified for switchboards, panelboards, load centres, industrial machinery and electrical distribution systems where dependable high-current protection is essential.
Key Advantages
- Compact Class T fast-acting fuse for high-current applications.
- 700 A rated current for heavy-duty industrial systems.
- 300 V AC / 160 V DC voltage ratings.
- Exceptional current-limiting performance reduces let-through energy.
- Unique Class T dimensions prevent incorrect fuse substitution.
- High interrupting capability helps protect valuable electrical equipment.
Key Features
- Mersen Amp-Trap 2000 A3T series.
- 700 A nominal current rating.
- 300 V AC / 160 V DC rated voltage.
- Fast-acting Class T fuse.
- Glass melamine body for excellent dimensional stability.
- Blade terminals with permanently stamped catalogue number.
- Current-limiting design for rapid fault interruption.
- Compatible with Class T fuse holders.
High-Performance Current-Limiting Protection
The Mersen A3T700 rapidly clears fault currents before damaging levels of energy can reach downstream conductors and equipment. Its current-limiting construction helps minimise equipment damage, reduce downtime and improve protection for electrical distribution systems operating at high fault levels.
Designed for demanding industrial applications, the A3T700 combines compact dimensions with outstanding fault-clearing capability, making it ideal for modern electrical panels where both performance and space efficiency are essential.
Typical Applications
- Industrial switchboards.
- Panelboards.
- Load centres.
- Electrical distribution systems.
- Heavy industrial machinery.
- Circuit breakers and metering centres.
Technical Specifications
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| Current | 700 A | |
|---|---|---|
| Voltage | 300 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A3T700 | |
| Description | Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 700A Blade Amp-Trap® | |
| EAN/UPC Code | 782001890827 | |
| Rated voltage AC UL | 300 V | |
| Rated voltage DC UL | 160 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 700 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 | 52.8 mm | |
| Product Length | 85.9 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.381 kg | |
| Sell Pack Width | 53.8 mm | |
| Sell Pack Length | 53.8 mm | |
| Sell Pack Height | 88.9 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.3615 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A3T700 used for?
It protects high-current industrial electrical systems, switchboards and power distribution equipment against overcurrent and short-circuit faults.
What is the current rating of the A3T700?
The Mersen A3T700 has a nominal current rating of 700 A.
What voltage is the A3T700 rated for?
The fuse is rated for operation at 300 V AC and 160 V DC.
What type of fuse is the A3T700?
The A3T700 is a fast-acting Class T Amp-Trap 2000 current-limiting fuse.
Can the Mersen A3T700 be reused after it operates?
No. The A3T700 is a single-use protective device and must be replaced after interrupting a fault.
Trusted for High-Current Circuit Protection
Mersen Amp-Trap Class T fuses are trusted by panel builders, OEMs and electrical engineers worldwide for compact dimensions, exceptional current limitation and dependable high-current protection.
