Schneider Electric 9012-ACW1 Pressure Switch

Schneider Electric's Square D 9012-ACW1 pressure switch is an industrial on/off control device with a 1–110 psi operating range and a 7–30 psi differential, designed for reliable signaling in pneumatic or hydraulic systems. It features SPDT contacts (one normally open and one normally closed), enabling straightforward fault-detection or interlock wiring for equipment such as pumps, compressors, and pressure-regulating assemblies. As part of the 9012 family from Square D (Schneider Electric), this switch provides a robust mechanical sensing solution that activates electrical circuits at user-set thresholds, making it suitable for process automation, HVAC, and safety control applications where precise actuation and simple wiring are important. For proper replacement, confirm compatibility with your system’s electrical rating, mounting, and the intended up/down pressure setpoints, since exact specifications can vary by variant within the 9012 line.