The Mersen AJT100 is a 100A Class J time-delay fuse engineered for demanding industrial and commercial electrical installations. Built with a dual-element design and a 200 kA interrupt rating, it delivers superior protection against short circuits and overloads — making it the dependable choice for motor branch circuits, control panels, and power distribution equipment on the job site. Its rejection-style blade terminals ensure it can only be installed in Class J fuse holders, eliminating the risk of misapplication. The fiberglass body and cylindrical form factor hold up in tough site conditions, while the indicating feature provides a clear visual signal when the fuse has operated, saving valuable troubleshooting time.

Specifications

Amperage Rating 100 A
Voltage Rating 600 V AC
Class J
Series AJT
Type Current Limiting Low Voltage North American Time Delay
Element Dual
Interrupt Rating 200 kA
Body Size 1-1/16 in Dia x 4-5/8 in L
Body Type Cylindrical
Material Fiberglass
Mounting Type Clip
Terminal Type Blade
Rejection Type Rejection
Indicating Yes