Why Choose the Mersen AJT60 Class J Time-Delay Fuse?
The Mersen AJT60 is a premium Class J time-delay fuse engineered to provide dependable overcurrent protection for industrial electrical systems. As part of the renowned Mersen Amp-Trap 2000® AJT series, it combines advanced current-limiting performance with time-delay characteristics, making it ideal for protecting motors, transformers, feeders and branch circuits where temporary inrush currents occur during normal operation.
Designed with advanced material technology, the AJT60 withstands normal motor-starting and transformer-energisation currents while rapidly clearing sustained overloads and short circuits. Its compact Class J construction requires approximately half the mounting space of comparable Class RK fuses, allowing more efficient panel layouts without compromising protection.
With a 60 A current rating and a 600 V AC / 400 V DC rating, the AJT60 is ideal for industrial control panels, motor branch circuits, transformer protection and power distribution equipment. The ferrule terminal design ensures secure installation in compatible Class J fuse holders and fused disconnect switches.
Key Advantages
- Industrial Class J time-delay fuse for dependable circuit protection.
- 60 A current rating for motors, transformers and distribution systems.
- 600 V AC / 400 V DC voltage rating.
- Time-delay characteristics minimise nuisance operation during equipment start-up.
- Advanced current-limiting technology reduces fault energy.
- Compact Class J footprint saves valuable enclosure space.
Key Features
- Mersen Amp-Trap 2000® AJT series.
- 60 A rated current.
- 600 V AC / 400 V DC rated voltage.
- Class J dual-element time-delay construction.
- Ferrule terminal configuration.
- 200 kA AC interrupting rating.
- 100 kA DC interrupting rating.
- Available in non-indicating and SmartSpot® indicating versions.
- Supports IEC Type 2 No Damage protection.
- RoHS and UKCA compliant.
Reliable Protection for Industrial Electrical Systems
The Mersen AJT60 protects motors, transformers, conductors and industrial equipment by interrupting overload and short-circuit currents before excessive fault energy can damage electrical systems. Its time-delay characteristics allow temporary inrush currents to pass while maintaining dependable protection against sustained faults.
Its advanced current-limiting technology significantly reduces thermal and mechanical stress on downstream equipment, helping improve system reliability, reduce maintenance requirements and minimise costly downtime.
Typical Applications
- Industrial control panels.
- Motor branch circuit protection.
- Transformer protection.
- Main, feeder and branch circuits.
- OEM machinery and automation equipment.
- Industrial power distribution systems.
- Fused disconnect switches.
