and the PSE-AM2

How do I identify the proper terminal connections

Its lightweight construction minimizes startup torque requirements

switch for interfacing with building management systems

Whether you are troubleshooting a 24V condenser relay failure or performing seasonal maintenance

Nordyne 632477R Pressure Switch Els PW 17895 and the PSE-AM2The Nordyne 632477R Pressure Switch is an essential OEM safety component engineered for precise airflow monitoring in residential HVAC systems. Featuring a 0. 70" WC set point and SPST (Single Pole Single Throw) configuration, this switch is the direct cross referenced replacement for the legacy 632477 model. Designed to interface with the inducer motor, it ensures that the furnace only initiates ignition when a safe negative pressure and proper flue