Square D 9012GHW-1 Pressure Switch

The Square D 9012GHW-1 Pressure Switch is an adjustable SPDT pressure switch in the 9012G family, designed to sense and control pressure in air, gas, hydraulic oil, steam and water systems. It uses a 1/4-18 FNPT process connection and is offered with enclosures rated for NEMA 4/4X/13 environments, making it suitable for harsh industrial settings. Electrical ratings include up to 600 VAC at 10 A and up to 600 VDC at 10 A, enabling it to switch motors and control circuits in demanding installations. The unit features two adjustable setpoints on an adjustable scale for two-threshold operation. Available pressure ranges include low-to-medium values such as 3–175 PSIG and 22–90 PSIG, with datasheets noting a broader 0–500 PSIG range for the 9012G family; the 9012GHW-1 variant follows these general specifications. The housing is a zinc-plated steel base (ACIER PLAQUE ZINC), enhancing durability in industrial environments, and many listings indicate UL, CSA and CE certifications where applicable. Typical applications include pump and compressor control, HVAC and water systems, steam lines, and general pressure sensing in hydraulic and pneumatic circuits.