Why Choose the Mersen AJT350 Class J Time-Delay Fuse?
The Mersen AJT350 is a premium Class J time-delay fuse designed to provide reliable overcurrent protection for demanding industrial electrical systems. As part of the proven Mersen Amp-Trap 2000® AJT series, it combines exceptional current-limiting performance with time-delay characteristics, making it ideal for protecting main circuits, feeders, motor branch circuits and industrial machinery operating under high fault current conditions.
Engineered with advanced fuse technology, the AJT350 withstands temporary motor starting and transformer inrush currents while providing rapid protection against sustained overloads and short circuits. Its compact Class J design requires significantly less mounting space than comparable Class RK fuses, allowing more efficient control panel layouts without compromising protection.
With a rated current of 350 A and a 600 V AC / 400 V DC rating, the AJT350 is ideally suited for industrial power distribution, motor protection and OEM machinery. Its blade construction enables secure installation into compatible Class J fuse holders, clips and fused disconnect switches.
Key Advantages
- High-capacity Class J time-delay fuse for industrial circuit protection.
- 350 A current rating for high-power applications.
- 600 V AC / 400 V DC voltage rating.
- Time-delay characteristics accommodate motor and transformer inrush currents.
- Current-limiting technology helps reduce equipment damage during fault conditions.
- Compact Class J footprint saves valuable panel space.
Key Features
- Mersen Amp-Trap 2000® AJT series.
- 350 A ampere rating.
- 600 V AC / 400 V DC rated voltage.
- Class J time-delay fuse construction.
- Blade terminal design.
- 200 kA AC interrupting rating.
- SmartSpot® visual open fuse indication available.
- Supports IEC Type 2 No Damage protection.
Reliable Protection for High-Current Industrial Systems
The Mersen AJT350 is engineered to interrupt dangerous overload and short-circuit currents before they can damage motors, transformers, switchgear and other valuable electrical equipment. Its time-delay performance allows normal temporary inrush currents to pass without unnecessary fuse replacement, improving system availability.
The fuse's high interrupting capacity and current-limiting performance make it ideal for industrial facilities, OEM machinery and power distribution systems where dependable protection and maximum uptime are essential.
Typical Applications
- Main and feeder circuit protection.
- High-current motor branch circuits.
- Industrial transformer protection.
- Power distribution panels.
- OEM machinery and automation systems.
- Industrial switchboards and fused disconnect switches.
