Lochinvar & A.O. Smith 100271883 Pressure Switch 321042-401 this is a non-fused disconnect

this is a non-fused disconnect designed to serve as a local safety shut-off for downstream equipment like air conditioners and refrigeration units

offering a drop-in fit for popular furnace models including the GPND025 and GPND030 series

providing a stable platform that prevents the flex and shifting often seen with universal aftermarket alternatives

This kit typically includes two cams

Technician-Ready: Includes all necessary bracket hardware for a 30-second heat-up profile

Lochinvar & A.O. Smith 100271883 Pressure Switch 321042-401 this is a non-fused disconnectMaintain peak combustion safety with the Lochinvar & A. O. Smith 100271883 Pressure Switch, a critical OEM component designed for low gas pressure monitoring. As a veteran grade K low gas pressure switch, this device acts as an essential safety interlock, continuously sensing the inlet gas supply to ensure it meets the minimum operational threshold of approximately 3. 1" W. C. If the supply pressure drops below the setpoint, the internal contacts