Lennox 49M50 Pressure Switch 318518-761 As the direct updated replacement

As the direct updated replacement for the HUHAAB20

While it functions as a standard control relay

this ClimateMaster thermistor should read approximately 10

Constructed with high-durability materials and featuring an integrated mounting bracket

Lennox 49M50 Pressure Switch 318518-761 As the direct updated replacementThe Lennox 49M50 is a high performance HVAC high pressure switch designed for critical system monitoring in residential and commercial cooling applications. This genuine OEM Lennox pressure switch functions as a primary safety control, specifically calibrated for a 640 psig cut out (C O) threshold. When refrigerant pressures exceed this safety limit, the switch breaks the electrical circuit to the compressor, preventing catastrophic component failure