Air compressor three-phase control unit GYD20-16Y 380 Volts 20A with one output

Professional three-phase automatic pressure relay (pressure switch) GYD20-16Y, compatible with air compressor powered by 380V, power load up to 20A, nominal pressure up to 0.8 MPa, operation pressure range 0.3-1.5 MPa. 1 outlet female thread 15 mm