Overview Product Description Leeson Speedmaster DC controls are general purpose drives designed for use with permanent magnet type direct current motors. NEMA 1 enclosed drives are suitable for most industrial applications, with the NEMA 4X enclosures best suited for washdown or outdoor installations or for extremely dusty applications. Chassis only units are available for building into equipment, machinery or existing enclosures. Most controls have a dual voltage switch allowing the control to be used on 115V or 230V, single phase, 50/60hz. However, the proper voltage motor should be selected for use with the power supply input, i.e. 90V DC motors for 115V input or 180V DC motors for 230V input service. Installation and adjustment instructions are included. Input Voltage 115/230 Volts AC 60hz 1/8HP to 1HP @ 115 volts 1/4HP to 2HP @ 230 Volts NEMA 1 Enclosure Dimension 6" x 8" Heat sink # 174316 required for Leeson DC Speed Control for motors: 3/4hp & 1hp 115v; 1.5hp & 2hp 230v. Product Videos Custom Field Product Reviews