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Factory Precision: Genuine Carrier 48TM400755 ensures exact manifold alignment and header placement for simplified field brazing
Non-Linting Design: Features an aerated pilot flow that prevents debris buildup
ensuring low-profile routing and secure terminal seating within the tight tolerances of modern cabinet designs
This specific model is calibrated for 8-13 PSI
Key Benefits: Enhanced Durability: The corrosion-resistant stainless steel housing ensures long-term performance in harsh chemical and steam environments
Lennox 57W38 Limit Switch 30067439-890 Factory Precision: Genuine Carrier 48TM400755The Lennox 57W38 Limit Switch is a critical OEM replacement part designed for high limit temperature monitoring in residential gas and electric furnaces. This SPST (Single Pole Single Throw) safety control features a 3 inch insertion length, making it compatible with specific Lennox, Allied, Armstrong, and Ducane heating units. Engineered for precise thermal regulation, the switch is calibrated to open the circuit at 180F to prevent heat exchanger
