Emerson Climate-White Rodgers 3L12-301 SPST M/R Rollout Switch 300°F

The Emerson Climate-White Rodgers 3L12-301 M/R SPST Rollout Switch 15A/120 VAC is a manual reset safety control designed to interrupt electrical flow when excessive heat is detected in heating equipment. It uses a temperature-sensitive element that opens the circuit at 300F to support stop unsafe operating conditions within HVAC systems, it is commonly fitted in gas furnaces, unit heaters, and rooftop heating units where flame rollout protection is required for controlled system behavior. The switch is placed within the burner area to monitor abnormal flame movement and signal a shutdown. It assists in maintaining controlled operation within HVAC systems and concludes better system response during overheating.