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MERSEN FUSE 300V 3A T FUSE A3T3
Fast-acting Class T blade fuse rated at 300A for 300 V AC and 160 V DC applications with a high interrupting rating of 200 kA and bolted mounting.
£17.61
Why Choose the Mersen A3T3 Class T Fuse?
The Mersen A3T3 is a compact, fast-acting Class T fuse designed to provide dependable overcurrent and short-circuit protection in industrial and commercial electrical systems. As part of the established Mersen Amp-Trap® A3T series, it offers high current-limiting performance in a space-saving package.
This fuse rapidly interrupts damaging fault currents, helping to minimise the thermal and mechanical stress placed on conductors, switchgear and connected equipment. Its Class T configuration provides excellent protection where panel space is restricted and a high interrupting capacity is required.
With a rated current of 3 A, an AC voltage rating of 300 V and a DC voltage rating of 160 V, the Mersen A3T3 is suitable for low-current control circuits, distribution equipment and sensitive industrial systems requiring fast and reliable circuit protection.
Key Advantages
- Compact Class T fast-acting fuse for industrial circuit protection.
- 3 A current rating suitable for low-current electrical circuits.
- Rated for use at up to 300 V AC and 160 V DC.
- Highly current-limiting performance helps reduce damage during short circuits.
- Fast fault interruption improves equipment and personnel protection.
- Space-saving design is ideal for compact panels and electrical assemblies.
Key Features
- Mersen Amp-Trap® A3T fuse series.
- 3 A rated current.
- 300 V AC voltage rating.
- 160 V DC voltage rating.
- Fast-acting Class T operating characteristic.
- High current-limiting capability.
- Compact ferrule-style construction.
- Designed for use with compatible Class T fuse holders.
Reliable Protection for Low-Current Circuits
Fast-acting fuses such as the Mersen A3T3 respond rapidly when excessive current flows through a circuit. By interrupting fault current before it reaches its full prospective value, the fuse helps protect wiring, control components and connected electrical equipment from potentially severe damage.
The A3T series combines high interrupting capacity with compact dimensions, making it particularly useful in installations where available panel space is limited. Its current-limiting performance also supports improved short-circuit coordination within properly designed electrical systems.
Typical Applications
- Industrial control circuits.
- Electrical distribution panels.
- Control transformers and power supplies.
- Instrumentation and monitoring equipment.
- Commercial electrical installations.
- OEM machinery and automation equipment.
Technical Specifications
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| Current | 3 A | |
|---|---|---|
| Voltage | 300 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A3T300 | |
| Description | Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 300A Blade Amp-Trap® | |
| EAN/UPC Code | 782001890261 | |
| Rated voltage AC UL | 300 V | |
| Rated voltage DC UL | 160 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 300 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 | 85361010 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A3T3 used for?
The Mersen A3T3 is used to protect low-current industrial and commercial electrical circuits against overcurrents and short-circuit faults.
What is the current rating of the A3T3?
The fuse has a rated current of 3 A.
What voltage can the Mersen A3T3 handle?
The A3T3 is rated for applications up to 300 V AC and 160 V DC.
Is the Mersen A3T3 a fast-acting fuse?
Yes. The A3T3 is a fast-acting Class T fuse designed to interrupt damaging fault currents rapidly.
Which fuse holder should be used with the A3T3?
The fuse should be installed in a compatible Class T fuse holder rated for the circuit voltage and current requirements.
Trusted Industrial Circuit Protection
Mersen Amp-Trap® Class T fuses are widely used by electrical engineers, panel builders and equipment manufacturers for their compact construction, high interrupting capacity and reliable current-limiting protection.
