3-Phase pressure switch, pressure control 3-phase, air compressor switch, air compressor switch, air pump switches The FB-18(3-Phase) pressure switch ... , anti-skid braking systems, water pump systems, and dental air compressors etc. MODELMin On(Cut-In) (Bar)Max Off( ... Pressure are available on request.Conversion: 1Mpa =10bar,1bar = 14.5PSI,1Kgf/cm2 = 14.2PSI 3-phase pressure switch for air compressor