The MRCOOL MHK15U Universal with Circuit Breaker Air Handler Heat Strip is a supplemental electric heating accessory designed to provide additional heat for compatible air handler systems. It works by converting electrical energy into heat through resistance heating elements, while the integrated circuit breaker helps protect the electrical circuit from overloads. Designed for use wit... https://www.partshnc.com/mrcool-15-kw-universal-air-handler-heat-strip-with-circuit-breaker-mhk15u