J20 is a part of Mersen’s motor protection products, specifically designed for electrical motor protection. It is a single phase motor protector that meets the hardest-duty applications, including those in the HVAC and appliance markets. The J20 unit has built-in thermal magnetic circuitry that provides complete motor and circuit protection, including overload and short circuit protection, over current detection, multi-tripping and automatic reset capabilities, self-diagnostics, and more. It also has an adjustable trip setting and a manual, as well as an automatic reset function for increased safety.