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MERSEN FUSE 600V 225A CLASS J FUSE A4J225
The A4J225 fast-acting fuse delivers reliable overcurrent protection at 600VAC and 300VDC, ensuring critical equipment uptime. Engineered for demanding industrial circuits, its Class J design offers superior current-limiting performance and quick response to short-circuit faults.
£182.19
Why Choose the Mersen A4J225 Amp-Trap 2000 Fuse?
The Mersen A4J225 is a high-performance Class J fast-acting fuse designed to provide dependable overcurrent and short-circuit protection for industrial electrical systems. As part of the renowned Mersen Amp-Trap 2000 A4J series, it delivers exceptional current-limiting performance, helping to protect valuable electrical equipment while reducing the damaging effects of high fault currents.
Engineered for demanding industrial applications, the A4J225 provides rapid fault interruption for feeders, branch circuits, panelboards and switchboards. Its unique Class J rejection dimensions prevent substitution with lower-rated fuse classes, helping maintain system safety and electrical compliance.
With a rated current of 225 A, a 600 V AC rating and a 300 V DC rating, the Mersen A4J225 is ideal for protecting industrial power distribution equipment, machinery and general electrical loads where reliable fast-acting protection is essential.
Key Advantages
- Fast-acting Class J fuse for industrial circuit protection.
- 225 A current rating for feeders and high-current equipment.
- 600 V AC and 300 V DC voltage ratings.
- Current-limiting design minimises let-through energy during faults.
- Compact Class J rejection construction improves installation safety.
- High interrupting capacity for demanding industrial environments.
Key Features
- Mersen Amp-Trap 2000 A4J series.
- 225 A rated current.
- 600 V AC voltage rating.
- 300 V DC voltage rating.
- Fast-acting current-limiting performance.
- Blade terminal construction.
- Class J rejection-style design.
- Suitable for industrial power distribution and equipment protection.
Reliable Protection for Industrial Electrical Systems
Current-limiting fuses such as the Mersen A4J225 interrupt fault currents extremely quickly, limiting peak current and reducing the thermal and mechanical stresses experienced by downstream electrical equipment. This helps extend equipment life while reducing maintenance costs and unplanned downtime.
The Amp-Trap 2000 A4J series is widely specified for industrial control panels, switchboards, load centres, feeder circuits and bus duct installations where dependable protection and high interrupting capacity are essential.
Typical Applications
- Industrial power distribution systems.
- Panelboards and switchboards.
- Load centres.
- Feeder and branch-circuit protection.
- Bus duct installations.
- Lighting, heating and general industrial loads.
Technical Specifications
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| Current | 225 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A4J225 | |
| Description | Fuse A4J - Class J - Fast-Acting 600VAC 300VDC 225A Blade Amp-Trap® | |
| EAN/UPC Code | 782001960384 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 300 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 225 A | |
| AC or DC | AC/DC | |
| Fuse Class | Class J | |
| Speed/Characteristic | Fast-Acting | |
| Mounting | Clip | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Connection/Terminal Material | Brass Alloy | |
| Connection/Terminal Type | Blade | |
| Product Diameter | 54 mm | |
| Product Length | 181.1 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.8346 kg | |
| Sell Pack Width | 53.8 mm | |
| Sell Pack Length | 53.8 mm | |
| Sell Pack Height | 184.1 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.7938 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A4J225 used for?
The Mersen A4J225 provides fast-acting overcurrent and short-circuit protection for industrial power distribution systems, feeders, switchboards and electrical equipment.
What is the current rating of the A4J225?
The fuse has a 225 A current rating.
What voltage is the Mersen A4J225 rated for?
The A4J225 is rated for operation at up to 600 V AC and 300 V DC.
Is the A4J225 a fast-acting fuse?
Yes. The A4J225 is a fast-acting Class J current-limiting fuse designed to interrupt overloads and short-circuit faults rapidly.
Where is the A4J225 typically installed?
It is commonly installed in Class J fuse holders within industrial control panels, switchboards, load centres and power distribution equipment.
Trusted by Electrical Professionals Worldwide
Mersen Amp-Trap 2000 Class J fuses are trusted by electrical engineers, OEMs and maintenance professionals for dependable circuit protection, exceptional current limitation and reliable performance in demanding industrial applications.
