Lennox 51M75 Limit Switch 323269-701 Smith 199k BTU blower models

Smith 199k BTU blower models

45" WC rating

For contractors managing compressor protection or industrial pressure control

it is calibrated specifically for natural gas (NAT) applications

Direct OEM Compatibility: Engineered for a perfect fit on Reznor 195679 compatible shafts

Lennox 51M75 Limit Switch 323269-701 Smith 199k BTU blower modelsThe Lennox 51M75 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This OEM Lennox replacement part operates with a fixed temperature range, featuring a 95 125F trip point with an automatic reset configuration. Engineered to monitor heat exchanger temperatures, the Lennox 51M75 prevents overheating by breaking the electrical circuit to the gas valve or blower motor if