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MERSEN FUSE 300V 70A T FUSE A3T70
Fast-acting Class T fuse rated for 300VAC and 160VDC with 700A ampere rating and 200 kA interrupting capacity, featuring a compact blade design and Amp-Trap® technology for reliable overcurrent protection.
£23.88
Why Choose the Mersen A3T70 Amp-Trap Class T Fuse?
The Mersen A3T70 is a compact, high-performance Amp-Trap 2000 Class T fast-acting fuse designed to protect industrial electrical equipment, conductors and power distribution circuits against damaging overcurrent and short-circuit conditions. Its current-limiting construction provides rapid fault interruption while helping to reduce the thermal and mechanical stresses imposed on downstream components.
Rated at 70 A, 300 V AC and up to 160 V DC, the Mersen A3T70 combines a compact physical footprint with dependable high-fault-current interruption. This makes it particularly suitable for electrical panels and equipment where installation space is restricted but effective short-circuit protection remains essential.
The A3T70 is commonly specified for industrial control panels, power conversion equipment, distribution circuits and machinery. Its Class T design supports installation in compatible fuse holders and fused disconnect equipment while providing effective protection for cables, controls and connected electrical apparatus.
Key Advantages
- Compact Class T fast-acting fuse for space-constrained installations.
- 70 A rated current for industrial equipment and distribution circuits.
- 300 V AC and 160 V DC voltage ratings.
- Current-limiting performance helps reduce damaging let-through energy.
- Rapid interruption of high-level short-circuit currents.
- Helps protect conductors, switchgear and connected electrical equipment.
Key Features
- Mersen Amp-Trap 2000 A3T series.
- 70 A nominal current rating.
- 300 V AC / 160 V DC rated voltage.
- Fast-acting Class T current-limiting construction.
- Compact body for efficient use of panel space.
- Blade-style terminal configuration.
- Designed for compatible Class T fuse holders and disconnects.
- Single-use replaceable overcurrent protection device.
High-Performance Current-Limiting Protection
During a serious electrical fault, the Mersen A3T70 interrupts the circuit and limits the peak current and electrical energy permitted to flow downstream. This current-limiting action can help reduce damage to cables, contactors, power supplies, disconnect equipment and other connected components.
Its compact Class T format delivers effective fault-clearing performance without requiring the installation space associated with many larger fuse designs. This makes the A3T70 well suited to modern control cabinets, power conversion systems and industrial equipment where efficient use of panel space is important.
Typical Applications
- Industrial control panels.
- Power supplies and power conversion equipment.
- Branch and feeder circuit protection.
- Electrical distribution assemblies.
- Industrial machinery and automation systems.
- Compact switchgear and fused disconnect equipment.
Technical Specifications
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| Current | 70 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 A3T70 used for?
The A3T70 is used to protect industrial electrical circuits, conductors and connected equipment against excessive current and high-level short circuits.
What is the current rating of the Mersen A3T70?
The Mersen A3T70 has a nominal current rating of 70 A.
What voltage is the A3T70 rated for?
The fuse is rated for operation at up to 300 V AC and 160 V DC.
What type of fuse is the A3T70?
The A3T70 is a compact, fast-acting Class T current-limiting fuse from Mersen's Amp-Trap 2000 range.
Can the Mersen A3T70 be reset after it operates?
No. The A3T70 is a single-use fuse and must be replaced with a compatible fuse of the correct current, voltage and Class T rating after operation.
Trusted for Compact Circuit Protection
Mersen Amp-Trap fuses are widely used by panel builders, electrical engineers and equipment manufacturers where compact dimensions, dependable fault interruption and effective current limitation are required.
