The Nordyne 632493R is a factory-OEM SPST pressure switch engineered for reliability in HVAC systems. It is calibrated to actuate at 0.60″ water column (-0.60″ WC), making it suitable for monitoring inducer blower vacuum in gas furnaces. The switch features a single-pole single-throw (SPST) contact configuration and quick-connect spade terminals for fast replacement. Designed for use ... https://www.partshnc.com/632493r-nordyne-060-wc-spst-pressure-switch