Lennox 57W76 Flame Rollout Switch Manual Reset SPST 185°F

The Lennox 57W76 is a Manual Reset Rollout Switch, a safety part in the HVAC equipment including furnaces. It protects the system by extinguishing the burner flame when the temperature is high. It also helps avoid possible fires and damages on the furnace. It is approximately 5/8 inch in length and activates at 185°F. It has a Single Pole Single Throw connection and also does not automatically reset after it has tripped. This essential safety feature guarantees the proper functioning of the HVAC system by halting failures that may cause overheating. It uses SPST connection and has to be reset by hand after it has been switched on.