Why Choose the Mersen AJT4-1/2N Class J Time-Delay Fuse?
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.
Key Advantages
- Compact Class J time-delay fuse for industrial circuit protection.
- 4.5 A current rating suitable for precision electrical protection.
- 600 V AC / 500 V DC voltage rating.
- Time-delay characteristics reduce nuisance operation caused by motor and transformer inrush currents.
- Excellent current-limiting performance helps protect valuable electrical equipment.
- Compact footprint saves valuable control panel space.
Key Features
- Mersen Amp-Trap 2000® AJT series.
- 4.5 A ampere rating.
- 600 V AC / 500 V DC rated voltage.
- Class J time-delay fuse construction.
- Ferrule mounting design.
- 200 kA AC interrupting rating.
- Non-indicating fuse design.
- Suitable for IEC Type 2 No Damage protection.
Reliable Protection for Industrial Electrical Systems
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.
Typical Applications
- Industrial control panels.
- Motor branch circuit protection.
- Transformer protection.
- OEM machinery and automation systems.
- Power distribution equipment.
- General industrial electrical installations.
