Overview Product Description M421 Three Phase Motors Multi-Speed 10/4.4 HP Applications: For two speed, one and two winding, variable torque applications for speed control from one speed to another while under load. Blowers, fans, conveyors, mixing machines, centrifugal pumps. 10/4.4 HP 2 Speed 1800/1200 RPM 200-230Volts Two Winding Variable Torque 30-28/17-17.5 Full Load Amp 256T Frame 60 Hz Ball Bearing Service Factor 1.15 Product Videos Custom Field Product Reviews