Schneider Electric Square D 9012ACW-8 Pressure Switch

The Square D 9012ACW-8 pressure switch from Schneider Electric is a bellows-operated, pressure-actuated device designed to monitor pneumatic or hydraulic lines and trigger a control circuit at a fixed setpoint. It features a 1/4" NPT process connection and a setpoint range of 20 to 180 psi, with SPDT (one normally open, one normally closed) contacts to switch a single circuit. Rated for AC operation up to 480 VAC, this model is intended for panel or enclosure mounting with screw-clamp terminals, making it suitable for industrial control panels, HVAC equipment, and fluid-handling systems where a reliable pressure-threshold signal is required. The 9012ACW family, part of Square D Class 9012 ACW Series, is known for rugged construction and straightforward wiring, delivering a compact solution that fits tight control panels while providing a precise 20–180 psi switching window. Typical installations include compressors, pumps, and other equipment that need automatic start/stop or safety interlock based on pressure levels, all achieved with a single SPDT output and a durable 1/4" NPT connection.