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MERSEN FUSE 600V 80A CLASS J FUSE A4J80
The A4J80 fuse delivers rapid circuit protection for sensitive equipment, featuring a fast-acting design that minimises damage from overloads and short circuits. Rated for 600VAC and 300VDC, it handles up to 80A, making it ideal for demanding industrial power distribution applications.
£44.88
Why Choose the Mersen A4J80 Amp-Trap Fuse?
The Mersen A4J80 is a premium Class J fast-acting current-limiting fuse designed to provide reliable protection against overloads and short circuits in industrial and commercial electrical systems. As part of the trusted Mersen Amp-Trap A4J series, it delivers rapid fault interruption, exceptional current limitation and dependable protection for feeders, branch circuits, switchboards and industrial equipment.
Engineered for demanding industrial environments, the A4J80 reduces peak fault current and let-through energy, helping to minimise thermal and mechanical stress on downstream equipment. Its unique Class J dimensions prevent substitution with lower-rated fuse classes, improving system safety and ensuring compliance with applicable electrical standards.
With a rated current of 80 A, a 600 V AC rating and a 300 V DC rating, the Mersen A4J80 is ideal for protecting industrial distribution systems, panelboards, switchgear and general-purpose electrical loads requiring fast-acting overcurrent protection.
Key Advantages
- Fast-acting Class J fuse for industrial circuit protection.
- 80 A current rating for feeders, branch circuits and power distribution.
- 600 V AC and 300 V DC voltage ratings.
- Current-limiting design reduces damaging fault energy.
- 200 kA AC interrupting rating and 100 kA DC interrupting rating.
- Class J rejection dimensions help prevent incorrect fuse replacement.
Key Features
- Mersen Amp-Trap A4J series.
- 80 A rated current.
- 600 V AC voltage rating.
- 300 V DC voltage rating.
- Fast-acting current-limiting operation.
- Blade terminal construction.
- Fibreglass body for excellent dimensional stability.
- Compatible with Class J fuse holders.
Reliable Protection for Industrial Electrical Systems
The Mersen A4J80 interrupts fault currents within milliseconds, limiting peak current and total let-through energy before damaging levels can be reached. This helps protect conductors, switchgear, control equipment and power distribution systems from the destructive effects of overloads and short circuits while improving overall system reliability.
The Amp-Trap A4J range is widely specified for industrial control panels, switchboards, bus duct systems, feeder circuits, load centres, lighting and heating circuits, where dependable current limitation and high interrupting capacity are essential.
Typical Applications
- Industrial feeder circuits.
- Branch-circuit protection.
- Panelboards and switchboards.
- Bus duct systems.
- Industrial control panels.
- Load centres.
- Lighting and heating circuits.
- General industrial machinery.
Technical Specifications
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| Current | 80 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A4J80 | |
| Description | Fuse A4J - Class J - Fast-Acting 600VAC 300VDC 80A Blade Amp-Trap® | |
| EAN/UPC Code | 782001960308 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 300 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 80 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 | Silver-Plated Copper | |
| Connection/Terminal Type | Blade | |
| Product Diameter | 27 mm | |
| Product Length | 117.6 mm | |
| Sell Pack Quantity | 5 EA | |
| Sell Pack Weight | 0.5715 kg | |
| Sell Pack Width | 136.7 mm | |
| Sell Pack Length | 152.4 mm | |
| Sell Pack Height | 26.9 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.1089 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A4J80 used for?
The Mersen A4J80 provides fast-acting overcurrent and short-circuit protection for industrial feeders, branch circuits, switchboards and electrical distribution equipment.
What is the current rating of the A4J80?
The fuse has an 80 A current rating.
What voltage is the Mersen A4J80 rated for?
The A4J80 is rated for operation at up to 600 V AC and 300 V DC.
Is the A4J80 a fast-acting fuse?
Yes. The A4J80 is a fast-acting Class J current-limiting fuse designed to interrupt overloads and short-circuit faults extremely quickly.
Where is the A4J80 typically installed?
It is commonly installed in compatible Class J fuse holders within industrial control panels, switchboards, bus duct systems and power distribution equipment.
Trusted by Electrical Professionals Worldwide
Mersen Amp-Trap Class J fuses are trusted by electrical engineers, OEMs and maintenance professionals for delivering dependable overcurrent protection, exceptional current limitation and reliable performance in demanding industrial environments.
