Single-phase:115V 230V 3/2HP 2HP Three-phase:230V 575V 3HP Direct Current:32V 115V 230V 1/4HP 1/4HP 1/4HP Pressure Range:20-175PSI Joint Screw:ZGI1/4" Rated Voltage:250V Ratage Current:16A(10A) Screw:ZG1/4"