Schneider Electric GBW-2 Industrial Pressure Switch

Schneider Electric's GBW-2 industrial pressure switch (Square D Class 9012 GBW2) is an electro-mechanical device with two SPDT pressure-actuated circuits, intended for robust control and interlock applications in air, gas, hydraulic oil, steam, and water lines. It covers a 20 to 675 PSIG operating range and a 27 to 130 PSIG differential, uses a 1/4-18 NPTF fluid connection, and carries NEMA 4/4X/13 enclosure protection with Buna-N diaphragms for chemical resistance. Electrical ratings are 120–600 VAC at up to 10 A or 125–600 VDC at up to 10 A, enabling direct integration into standard control wiring, while a maximum pressure rating up to 2000 PSIG accommodates higher-pressure service; typical installations run up to 120 cycles per minute, though exact specs may vary by variant within the GBW2/9012 family.