Lennox 57W75 Limit Switch The dryseal threads provide a

The dryseal threads provide a leak-proof interface and improved clearance for tightening 3/4 SAE flare nuts

electromechanical switching component engineered for high-current management in HVAC heating circuits

where the inducer fan provides the secondary air necessary to pull the flame directly into the heat exchanger tubes

Automated System Recovery: Integrated auto-reset feature simplifies troubleshooting and restores heating once safe internal temperatures are reached

Lennox 57W75 Limit Switch The dryseal threads provide aPrecision is critical in furnace safety circuits, and the Lennox 57W75 Limit Switch is the standard grade solution for managing thermal thresholds in high efficiency systems. As a 250F CO M R Limit Switch, this component is engineered to interrupt the burner circuit when temperatures reach the 250 degree Fahrenheit cutoff, requiring a manual reset to ensure a technician inspects the underlying cause of the overheat. This OEM part is the direct