MERSEN FUSE J TD FUSE 600V 17-1/2A AJT AJT17-1/2

Why Choose the Mersen AJT17-1/2 Class J Time-Delay Fuse?

The Mersen AJT17-1/2 is a high-performance Class J time-delay fuse designed to provide dependable overcurrent protection for industrial and commercial electrical systems. As part of the trusted Amp-Trap 2000® AJT series, it combines effective current limitation with time-delay characteristics that accommodate temporary motor-starting and transformer inrush currents.

Engineered for branch circuit protection, the AJT17-1/2 helps safeguard motors, transformers, control equipment and electrical distribution circuits against damaging overloads and short circuits. Its compact Class J construction supports space-efficient panel designs while providing a high interrupting capacity for demanding industrial fault conditions.

With a rated current of 17.5 A and voltage ratings of up to 600 V AC and 500 V DC, the AJT17-1/2 is suitable for industrial control panels, motor circuits, HVAC equipment, transformers and OEM machinery. Its ferrule-style construction enables secure installation in compatible Class J fuse holders.

Key Advantages

• Compact Class J time-delay fuse for industrial branch circuit protection.
• 17.5 A current rating for motors, transformers and control equipment.
• 600 V AC and 500 V DC voltage ratings.
• Time-delay characteristics accommodate temporary motor and transformer inrush currents.
• Current-limiting construction helps reduce damage to downstream electrical equipment.
• Compact Class J format maximises available control panel space.

Key Features

• Mersen Amp-Trap 2000® AJT series.
• 17.5 A current rating.
• 600 V AC / 500 V DC rated voltage.
• Class J time-delay fuse.
• Ferrule-style terminal configuration.
• Advanced current-limiting design.
• Visual open-fuse indication for easier fault identification.
• Suitable for motors, transformers, feeders and branch circuits.

Reliable Protection for Industrial Electrical Systems

The Mersen AJT series is designed to tolerate the temporary inrush currents produced by motors, transformers and other inductive loads while responding effectively to sustained overloads and short circuits. This balance helps prevent nuisance fuse operation without compromising protection for valuable electrical equipment.

The AJT17-1/2 limits the amount of fault energy passed to downstream conductors and components, helping reduce thermal and mechanical stress during short-circuit conditions. This can minimise equipment damage, improve electrical safety and reduce costly production downtime.

Typical Applications

• Industrial control panels.
• Motor branch circuits and motor control centres.
• Transformer protection.
• HVAC and refrigeration equipment.
• OEM machinery and industrial automation systems.
• Power distribution panels and electrical feeders.