Supco STC4283 Thermal Cutoff 291°F

The Supco STC4283 Thermal Cutoff is an essential heating component used to provide over-temperature protection for heat and air handling equipment. It operates by opening the electrical circuit when the surrounding temperature reaches approximately 291F. Installed within wiring harnesses or mounted near heat-producing elements, it serves as a safety safeguard inside furnaces and in HVAC systems applications. It is integrated into duct heater assemblies and air handlers, where it interrupts power to heating elements or motors when an abnormal temperature rise occurs, It helps to maintain safe operation.