Why Choose the MERSEN FUSE 600V 4.5A J TD NON-IND AJT4-1/2N?
£29.91
The Mersen AJT4-1/2N is a premium Class J time-delay fuse engineered to provide dependable overcurrent protection for industrial electrical systems. Part of the trusted Mersen Amp-Trap 2000® AJT series, it combines exceptional current-limiting performance with time-delay characteristics, making it ideal for protecting motors, transformers, control panels and branch circuits where temporary inrush currents are common.
Designed using advanced fuse technology, the AJT4-1/2N helps minimise equipment damage during fault conditions while reducing nuisance fuse operations. Its compact Class J footprint requires significantly less installation space than comparable Class RK fuses, making it an excellent solution for industrial control panels and OEM machinery where panel space is at a premium.
With a 4.5 A current rating and a 600 V AC / 500 V DC rating, the AJT4-1/2N is ideal for industrial control circuits, motor branch circuits, transformer protection and feeder applications. The ferrule construction enables straightforward installation into compatible Class J fuse holders and disconnect switches.
The Mersen AJT4-1/2N delivers dependable protection against overloads and short circuits while accommodating temporary inrush currents generated by motors and transformers. Its advanced current-limiting technology reduces thermal and mechanical stress on connected equipment, helping improve reliability and reduce maintenance costs.
Its compact Class J construction makes it ideal for OEM machinery, industrial control panels, automation equipment and power distribution systems where reliable overcurrent protection and efficient use of installation space are essential.
| Current | 4.5 A |
|---|---|
| Voltage | 600 V |
| Manufacturer | Mersen |
| Series | Amp-Trap 2000® AJT |
| Model | AJT4-1/2N |
| Product type | Class J time-delay fuse |
| Current rating | 4.5 A |
| Voltage rating | 600 V AC / 500 V DC |
| Frequency | 50 / 60 Hz |
| Fuse class | Class J |
| Construction | Ferrule |
| Time characteristic | Time-delay |
| Interrupting rating | 200 kA AC |
| Indication | Non-indicating |
| HS Code | 85361010 |
| Country of Manufacture | Mexico |
The AJT4-1/2N protects industrial electrical circuits, motors, transformers and branch circuits against overloads and short circuits.
The fuse has a 4.5 A current rating.
The fuse operates at up to 600 V AC and 500 V DC.
Time-delay fuses tolerate temporary motor starting and transformer energisation currents while still providing excellent protection against sustained overloads and fault currents.
It is commonly installed in industrial control panels, disconnect switches, machinery and power distribution equipment using compatible Class J fuse holders.
Mersen Amp-Trap 2000® AJT Class J fuses are trusted by electrical engineers, panel builders and OEM manufacturers worldwide for their outstanding current-limiting performance, dependable protection and compact installation footprint.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...