The Bosch HVAC 8733952457 Resettable Furnace Rollout Safety Switch is a safety device designed to protect compatible gas furnaces from excessive heat caused by abnormal burner or combustion conditions. It monitors temperatures around the burner area and interrupts the heating circuit when unsafe temperatures are detected, helping prevent equipment damage and fire hazards. After the co... https://www.partshnc.com/bosch-hvac-8733952457-resettable-furnace-rollout-safety-switch