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 wash down or outdoor installations or for extremely dusty applications. Chassis only units are available for building into equipment, machinery or existing enclosures. - Most controls have dual voltage switch allowing the control to be used on 115 or 230V, single phase, 50/60 Hz service. However, the proper voltage motor should be selected for use with the power supply input, i.e., 90VDC motors for 115V input or 180V motors for 230V input service. Installation and adjustment instructions are included.