Why Choose the Mersen AJT7N Class J Fuse?
The Mersen AJT7N is a dependable 7 A Class J time-delay fuse designed to protect industrial electrical equipment against overloads and short circuits. As part of the established Mersen Amp-Trap 2000 AJT series, it combines current-limiting performance with the ability to tolerate temporary inrush currents generated by motors, transformers and other inductive loads.
Its dual-element time-delay construction helps reduce unnecessary fuse operation during normal equipment start-up while providing a rapid response to dangerous fault currents. This makes the AJT7N suitable for machinery, control panels, motor branch circuits, transformers and industrial power distribution systems where reliable protection and operational continuity are important.
With a rated current of 7 A and voltage ratings of up to 600 V AC and 500 V DC, the Mersen AJT7N can be used across a broad range of industrial installations. Its compact Class J format also helps conserve valuable space inside electrical panels and equipment enclosures.
Key Advantages
- Reliable Class J time-delay fuse for industrial circuit protection.
- 7 A current rating for precise protection of electrical equipment.
- 600 V AC and 500 V DC ratings for flexible application compatibility.
- Current-limiting operation helps reduce damaging fault energy.
- Time-delay performance accommodates normal motor and transformer inrush currents.
- High interrupting capacity for demanding industrial electrical systems.
Key Features
- Mersen Amp-Trap 2000 AJT series.
- 7 A rated current.
- 600 V AC and 500 V DC rated voltage.
- Class J dual-element time-delay construction.
- Current-limiting technology for enhanced equipment protection.
- Designed to withstand temporary motor-starting and transformer inrush currents.
- Compact ferrule-style body for compatible Class J fuse holders.
- Suitable for branch circuits, motors, transformers and industrial machinery.
Reliable Protection for Industrial Electrical Systems
The Mersen AJT7N interrupts excessive current before conductors and connected components sustain serious thermal or mechanical damage. During a short circuit, its current-limiting design restricts the peak current and total fault energy that can pass through the protected circuit.
Unlike a fast-acting fuse, the AJT7N incorporates a time delay that allows harmless temporary surges caused by motor starting, transformer energisation and similar operating conditions. This combination of inrush tolerance and effective fault interruption makes it suitable for demanding industrial control and power distribution applications.
Typical Applications
- Industrial motor branch circuits.
- Transformers and control transformers.
- Machinery and automation control panels.
- Power supplies and industrial control equipment.
- Heating and resistive-load circuits.
- Industrial lighting and power distribution systems.
