Lennox 69M18 Pressure Switch 340155-7026 supporting a wide range of

supporting a wide range of voltages from 24V to 277V

this 1VL44 series cast iron sheave is designed to work with various fractional horsepower and standard industrial belts

Enhanced Conductivity: High-grade copper wiring reduces resistance and prevents connector overheating

Designed to interface directly with PLC or BMS systems

Always check your specific furnace wiring diagram and parts list to confirm the required temperature rating and reset type

Lennox 69M18 Pressure Switch 340155-7026 supporting a wide range ofThe Lennox 69M18 Pressure Switch, also identified by part number 69M1801, is a critical safety component engineered for high pressure monitoring in professional HVACR applications. As a Lennox OEM replacement part, this high pressure cutout switch is factory calibrated to trigger a manual reset (M R) cutout at 640 PSI. This precise threshold is essential for protecting the compressor from catastrophic failure due to excessive discharge pressure,