Industrial PC-110 Electronic Pressure Switch 1-20PSIG

The Schneider Electric PC-110, originally Barber Colman, is a pneumatic–electric pressure switch that converts a 1–20 psi air signal into an SPDT electrical output for controlling loads such as air compressors and fans. It supports surface- or track-mount installation and measures roughly 3-1/8 in x 3-1/2 in x 2-1/8 in. The device runs on 24 V AC and offers an adjustable differential of 1–5 psi, so the switch toggles within the 1–20 psi range. A second white plastic tubing port allows full line pressure (20 psi) to pass in one state and 0 psi in the other, enabling two-position control in time-based or differential signaling applications.