Schneider Electric 9012GAW2G18 Pressure Switch

Schneider Electric's Square D Telemecanique 9012GAW2G18 pressure switch is an electromechanical diaphragm‑operated device used to start and stop pumps, compressors, and other equipment based on system pressure. It features SPDT contacts (1NC-1NO) with a 1/4-18 FNPT port, a setpoint range of 1 to 40 psi, and an adjustable differential of roughly 0.6 to 2 psi, suitable for controlling pressures in air, gas, hydraulic oil, steam, and water systems. Built with an aluminum housing and Buna N diaphragm, it carries NEMA 4/4X/13 ratings and electrical capabilities up to 10 A at 120–600 VAC and 125–600 VDC, depending on configuration, with a maximum process pressure around 100 psi. The 9012GAW2G18 variant corresponds to the 480 VAC, 10 A option within the 9012G family, making it a common choice for higher‑voltage installations.