Lennox 73W33 Pressure Switch 318518-761 The 120Vac solenoid is protected

The 120Vac solenoid is protected by a NEMA 4X enclosure

reliable installation in the field

As a genuine BASO Gas Products component

Enhanced Protections: Features an onboard 3-amp fuse and solid-state fan blower control logic to prevent common failures associated with mechanical timers

This genuine HVAC pressure switch is cross-compatible with several Carrier

Lennox 73W33 Pressure Switch 318518-761 The 120Vac solenoid is protectedThe Lennox 73W33 is a high precision dual stage pressure switch engineered for specific Lennox furnace models and air handlers. This OEM replacement pressure switch serves as a critical safety component, monitoring the pressure differential within the combustion blower. With setpoints calibrated at . 68 . 35 WC, it ensures proper venting and blower performance before allowing the ignition sequence to proceed. As a two stage pressure switch, it manages