Industrial 25A-140PSI-175PSI-1-4in-Port-4Way Pressure Switch

Industrial 25A-140PSI-175PSI-1/4in-Port-4Way Pressure Switch is an automatic pressure-control device for compressed-air systems that starts a motor at 140 PSI and stops at 175 PSI to keep system pressure within preset limits, delivering a 35 PSI differential. This 4-port, 1/4 inch NPT unit uses female threaded ports and DPST mechanical contacts for automatic compressor start/stop control, with a maximum operating pressure of 175 PSI and a 25 A current rating suitable for direct motor switching on many single-phase compressors. It is commonly mounted tank- or manifold-style and is compatible with single-stage and two-stage air compressors, making it suitable for industrial applications such as reciprocating shop compressors, automotive repair facilities, manufacturing plants, woodworking shops, and other pneumatic tool systems that require automatic pressure regulation. The 1/4-inch four-port configuration supports connections for pressure gauges, safety valves, pressure relief devices, and unloader valves, and common replacements include Condor USA INC Air Compressor Pressure Switch Range 11NC2E, Square D 9013FHG54J59M1X, and Nason Pressure Switch.