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Standard Threading: Features a 5/16-18 NPT female connection for easy replacement and universal fit
where consistent temperatures are vital for product safety
As a direct 7200ERCS-1 replacement
this board manages the induction motor
Lennox 29M74 Limit Switch 328140-751 Standard Threading: Features a 5/16-18The Lennox 29M74 Limit Switch is a critical fixed temperature safety component engineered for Lennox furnace flame rollout and primary limit protection. This SPST (Single Pole Single Throw) thermal switch is rated for a 140F trip point with a 30F differential, ensuring precise furnace cycling and preventing heat exchanger damage. Designed as a direct OEM replacement limit switch, the 29M74 features a 1 inch insertion depth and 1 4 inch quick connect
US$ 49.99
US$ 43.99
US$ 29.99
