Schneider Electric SE 9012-GRW5 Pressure Switch

Schneider Electric's Square D 9012-GRW5 pressure switch is an electromechanical device in the 9012G family that actuates at a pressure within the 3 to 150 psi range and provides SPDT (Form C) contacts for control circuits, offering a compact, rugged solution for panel mounting in industrial equipment. It features a 0.25 in NPTF process connection and a 0.5 in conduit entry, with four screw-terminal connections (or screw-clamp wiring) to accommodate standard field wiring and ensure secure, vibration‑resistant operation in dirty or crowded control enclosures. The unit is designed for long service life in harsh environments and supports mounting on electrical panels or equipment; its electrical connections are typically rated for AWG 22–12 conductors and compatible with common control voltages used in automation systems. The 9012G family is designed for air and non‑corrosive liquids or gases and carries a maximum pressure rating up to 475 psi; its snap‑action mechanism delivers crisp, repeatable switching across cycles and supports reliable operation within a fluid temperature range of -40 to 250 °F. This variant is commonly used to sense pressure and trigger relays or PLC inputs for compressors, pneumatic circuits, HVAC safety interlocks, dryers, and other load‑switching tasks where a defined pressure threshold must actuate equipment.