The Utica-Dunkirk BD710626001V BD Overtemperature Thermostat is a reliable safety control designed to protect heating equipment from excessive operating temperatures. It works by continuously monitoring system temperature and interrupting the electrical circuit when unsafe heat levels are detected, helping prevent overheating and component damage. Commonly used in Utica-Dunkirk boiler... https://www.partshnc.com/bd710626001v-utica-dunkirk-bd-overtemp-thermostat