Why Choose the Mersen AJT5N Class J Time-Delay Fuse?
The Mersen AJT5N is a compact Class J time-delay fuse designed to provide dependable overcurrent protection for industrial electrical systems. Part of the proven Mersen Amp-Trap 2000® AJT series, it combines time-delay operation with superior current-limiting performance, making it suitable for motors, transformers, feeders and branch circuits that experience temporary inrush currents during normal operation.
The AJT5N is engineered to tolerate typical motor-starting and transformer-energisation currents while responding effectively to sustained overloads and short circuits. Its compact Class J format requires approximately half the mounting space of comparable 600 V AC Class RK fuses, helping panel builders and equipment manufacturers create space-efficient electrical assemblies without compromising circuit protection.
With a rated current of 5 A and a voltage rating of 600 V AC / 500 V DC, the AJT5N is suitable for industrial control panels, motor branch circuits, transformer protection and power distribution equipment. Its ferrule terminals provide a secure connection in compatible Class J fuse clips, holders and fused disconnect switches.
Key Advantages
- Compact Class J time-delay fuse for industrial circuit protection.
- 5 A current rating for control, motor and transformer applications.
- 600 V AC / 500 V DC voltage rating.
- Time-delay characteristics accommodate normal motor and transformer inrush currents.
- Current-limiting performance helps reduce thermal and mechanical damage during faults.
- Compact construction conserves valuable control-panel space.
Key Features
- Mersen Amp-Trap 2000® AJT series.
- 5 A rated current.
- 600 V AC / 500 V DC rated voltage.
- Class J time-delay fuse construction.
- Ferrule terminal configuration.
- 200 kA AC interrupting rating.
- Tin-plated copper terminals.
- Non-indicating fuse configuration.
- Supports IEC Type 2 No Damage protection.
- Clip-mounted installation.
Reliable Protection for Industrial Electrical Systems
The Mersen AJT5N helps protect conductors, motors, transformers and control equipment by interrupting dangerous overload and short-circuit currents before excessive fault energy can cause serious damage. Its time-delay response permits normal temporary start-up currents to pass without unnecessary fuse operation, helping improve equipment availability.
During a high-level fault, the fuse's current-limiting characteristics restrict the peak current and let-through energy experienced by downstream components. This helps reduce thermal stress, mechanical forces and equipment damage in demanding industrial environments.
Typical Applications
- Industrial control panels.
- Motor branch circuit protection.
- Transformer primary and secondary circuits.
- Main, feeder and branch circuits.
- OEM machinery and automation equipment.
- Fused disconnect switches.
- Industrial power distribution systems.
