Square D GAW-25 Pressure Switch Interrupter Unit

The Square D 9012GAW25 pressure switch interrupter is a DPDT (double‑pole, double‑throw) pressure switch that automatically opens or closes two circuits as system pressure crosses defined setpoints, making it a compact control device for pumps, compressors, and other equipment in pneumatic and hydraulic systems. It has a single pressure port with 1/4-18 FNPT threading and a sensing range of 3 to 150 psi, with adjustable differential to tune the on/off points to the application; the rugged aluminum housing provides durability, and the unit carries NEMA 4/4X/13 protection for indoor or outdoor use. Electrical ratings reach 480 VAC and 10 A, and the assembly is listed to UL 508, CSA, IEC, and CE standards, reflecting broad electrical compliance for industrial environments. The 9012GAW25 is designed for performance in up to about 120 cycles per minute and operates across a temperature range of -10 to 185 °F, supporting moderate to high cycling and harsh ambient conditions. Typical applications include water-pump control, air and hydraulic system switching, and other single‑stage pressure-control tasks where a DPDT switch with isolated contacts provides reliable, localized control.