The Three-Phase Wound-Rotor Induction Motor is fitted with stator winding phases that are independently terminated and identified on the faceplate to permit operation in either delta or star (wye) configuration. The rotor windings of the motor are brought out to the faceplate via external slip rings and brushes. This machine can be used as a wound-rotor induction motor, phase shifter, single-phase variable coupling transformer, three-phase transformer, selsyn control, frequency converter or asynchronous induction generator. The speed of this machine can be controlled through the use of the Three-Phase Rheostat, Model 3188-1.

The motor is supplied with a silk-screened faceplate showing the motor connections and a twelve-pin connector to fit with the Motor Terminal Module, Model 3171-2.