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MERSEN FUSE 600V 150A CLASS J FUSE A4J150
Fast-acting Class J fuse with 150A rating, suitable for AC/DC circuits up to 600VAC and 300VDC. Features blade terminals and Amp-Trap® technology for reliable industrial protection.
£78.30
Why Choose the Mersen A4J150 Amp-Trap 2000 Fuse?
The Mersen A4J150 is a high-performance Class J fast-acting fuse designed to provide dependable overcurrent and short-circuit protection for industrial electrical equipment. As part of the established Mersen Amp-Trap 2000 A4J series, it offers rapid fault interruption, effective current limitation and reliable protection for feeders, distribution circuits and equipment with non-inductive loads.
This industrial fuse is engineered to restrict damaging peak currents and reduce the amount of fault energy passed through to downstream components. Its fast-acting response helps protect conductors, switches, contactors and other electrical equipment from the severe thermal and mechanical stresses associated with high short-circuit currents.
With a rated current of 150 A and voltage ratings of up to 600 V AC and 500 V DC, the A4J150 is suitable for demanding industrial and commercial power-distribution applications. Its compact Class J rejection design helps conserve panel space while preventing the use of fuses with unsuitable electrical characteristics.
Key Advantages
- Fast-acting Class J fuse for industrial circuit protection.
- 150 A rated current for feeders and equipment circuits.
- 600 V AC and 500 V DC ratings for versatile system compatibility.
- Current-limiting performance helps reduce damaging fault energy.
- High interrupting capacity supports demanding industrial installations.
- Compact rejection-style construction helps prevent incorrect fuse substitution.
Key Features
- Mersen Amp-Trap 2000 A4J series.
- 150 A rated current.
- 600 V AC voltage rating.
- 500 V DC voltage rating.
- Fast-acting operating characteristic.
- Current-limiting Class J construction.
- Blade-style terminals for compatible fuse holders.
- Suitable for feeder, branch-circuit and equipment protection.
Reliable Protection for Industrial Electrical Circuits
Current-limiting fuses such as the Mersen A4J150 interrupt high fault currents before they can reach their maximum available level. This rapid operation reduces the peak current and total energy that downstream equipment must withstand, helping minimise component damage, electrical hazards and unplanned system downtime.
The A4J series is designed for applications requiring fast fault response, high interrupting capacity and compact installation dimensions. Its Class J construction makes it suitable for modern electrical panels, switchboards and industrial distribution systems where reliable protection and efficient use of enclosure space are essential.
Typical Applications
- Industrial power-distribution systems.
- Feeder and branch-circuit protection.
- Electrical control panels and switchboards.
- Lighting and heating circuits.
- Resistive and non-inductive loads.
- Machinery and production equipment.
Technical Specifications
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| Current | 150 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Fuse Class | Fast acting | |
| Item number | A4J150 | |
| Description | Fuse A4J - Class J - Fast-Acting 600VAC 300VDC 150A Blade Amp-Trap® | |
| EAN/UPC Code | 782001960353 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 300 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 150 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 | 41.3 mm | |
| Product Length | 146 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.3583 kg | |
| Sell Pack Width | 42.9 mm | |
| Sell Pack Length | 42.9 mm | |
| Sell Pack Height | 152.4 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.342 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A4J150 used for?
The Mersen A4J150 is used to protect industrial feeders, branch circuits and electrical equipment against overloads and damaging short-circuit currents.
What is the current rating of the A4J150 fuse?
The A4J150 has a rated current of 150 A.
What voltage is the Mersen A4J150 rated for?
The fuse is rated for operation at up to 600 V AC and 500 V DC.
Is the Mersen A4J150 a time-delay fuse?
No. The A4J150 is a fast-acting Class J fuse designed to interrupt overloads and short-circuit currents rapidly.
What fuse holder is required for the A4J150?
The A4J150 should be installed in a correctly rated Class J fuse holder suitable for a 150 A fuse and the applicable system voltage.
Trusted Industrial Circuit Protection
Mersen Amp-Trap 2000 fuses are widely used by electrical engineers, panel builders and maintenance professionals to provide reliable current-limiting protection for industrial and commercial power systems.
