Lennox 52M42 Limit Switch 323055-751 The box lugs are designed

The box lugs are designed for the primary high-current power leads (line and load)

ensuring the mechanical room remains safe

though the internal switching occurs strictly within the 15 to 19 psig pilot signal range

or "red dust" iron powder emissions indicative of fit failure

providing superior regulation compared to unbalanced alternatives

Lennox 52M42 Limit Switch 323055-751 The box lugs are designedThe Lennox 52M42 Limit Switch is a critical safety component designed for precise thermal regulation within Lennox residential furnaces. As a genuine Lennox OEM replacement part, this 180 40F auto limit switch is engineered to monitor heat exchanger temperatures, effectively preventing hazardous overheating and potential equipment damage. This furnace high limit switch features a fixed set point of 180F for the opening temperature and an automatic