Square D 9012 GDW-5 Pressure Switch Interrupter

Square D 9012GDW5 Pressure Switch Interrupter is a fixed-scale, single-threshold control device (Form Z, SPDT) that switches a control circuit at a set pressure from 3 to 150 PSIG and is rated for up to 600 V. It features NC-NO (1NO+1NC) contacts in a four-terminal block, with a 1/4"‑18 NPTF fluid connection conforming to UL 508 and a 0.5" NPT conduit entry for field wiring. Built for industrial environments, it is UL/CSA/CE listed and commonly used to automate pumps, compressors, and hydraulic or pneumatic systems that require a reliable, fixed-setpoint pressure switch. The 9012GDW5 handles fluids such as hydraulic oil, air, and non‑corrosive liquids or gases across a wide temperature range (-40 to 121 °C, -40 to 250 °F). Wiring is via screw-clamp terminals (AWG 22–AWG 12), and the device is designed for control-circuit applications without a local display. The model supports AC operation up to 600 V and, in typical installations, up to 10 A, making it suitable for industrial pump control panels, process equipment, and other machines that rely on a sturdy, non-adjustable differential switch with a fixed operating point.