Mersen is a global expert in electrical power and advanced materials. Mersen designs innovative solutions to address its clients specific needs to enable them to optimize their manufacturing process in sectors such as energy, transportation, electronics, chemical, pharmaceutical and process industries.

Get control with Mersen’s Fuse Control™ program
Developed by Mersen and refined through extensive field research, Fuse Control is a simple program that packs a lot of muscle. It will give you the edge you need to mitigate arc flash hazards, achieve code compliance, eliminate obsolete fuse categories, reduce inventory by 25% or more and offer the highest-grade overcurrent protection available. Discover Fuse Control and seize the benefits of fuse selection, training and consolidation to increase operating efficiencies and enhance workplace safety.

CLASS RK1 AND J REDUCER FUSES:
SAME FOOTPRINT REDUCED RATINGS WITH PREMIUM RELIABLE PERFORMANCE
Mersen is the only fuse manufacturer that offers reducer fuses today. The A2D-R, A6D-R, and AJT Reducer Fuses are a safe, permanent solution for decreasing your current rating without using a Fuse Reducer accessory, which is designed for temporary use only. These special purpose UL Listed reduced rating Class RK1 and J fuses provide the same trusted protection levels as a traditional Class RK1 fuses and AJT Class J fuses, but in a larger body.
Reducer fuses are designed for simplicity and ease of installation. With tool-less installation, reducer fuses save you time and money as compared to fuse reducers.