This Leeson reversible 115/208-230 Volt single phase motor has 1725 RPM and automatic overload protection. U.S.A.HP 1 Rated RPM 1,725 Volts 115 / 208-230 Amps 6.4 at 230 Volts Motor Phase(s) Single Shank Diameter (in.) 5/8 Shank Length (in.) 1 7/8 Frame Type NEMA 56 Reversible Yes Capacitor Start Yes Auto Overload Protection Yes Rigid Base Yes.