Air compressor control unit Max 500V-20A 12.5Bar PSI180 single intput

Professional automatic pressure relay (pressure switch control unit) Max 500V-20A 12.5Bar PSI180, compatible with air compressor powered by 380-500V, load up to 20A, nominal pressure up to 1.0 MPa, operation pressure range 0.4-1.5 MPa. 1 outlet female thread 12 mm