Brand: Marathon Item: Motor IP Rating: IP43 Series: XRI Mounting: C-face/rigid base Manufacturer Part Number: 56T34F5940 Voltage Rating: 208-230/460 VAC Horsepower Rating: 1hp Shaft Type: Round with square key Enclosure Type: TEFC Voltage Type: AC Number of Phases: 3 Frame Material: Rolled steel Nameplate RPM: 3490rpm Motor Frame: NEMA 56C Motor Type: Induction Integrated Brake: No Shaft Diameter: 5/8in Efficiency: 80 Overload Type: None Efficiency Group: Premium efficiency Motor Application: Inverter rated Synchronous Speed: 3600rpm Shaft Material: 1144 Stressproof (C-223) steel Electrically Reversible: Yes Insulation Class: Class F Service Factor: 1.15 NEMA Design: Design B Junction Box Orientation: F3 Mounting Orientation: Horizontal Constant Torque Rating: 10:1 Variable Torque Rating: 10:1 Marathon XRI premium efficiency AC induction motor, inverter rated, 1hp, 3-phase, 208-230/460 VAC, 3600rpm, TEFC, NEMA 56C frame, rolled steel, C-face/rigid base mount.