The Field Rheostat, 2 kW is designed to be used with the DC Motor/Generator, Model 8501, and Three-Phase Synchronous Motor/Generator, Model 8507. The module consists of a variable power resistor, directly controlled by a knob on the module faceplate. It is protected from over-current conditions by a thermal-magnetic circuit breaker. This module is designed to vary the shunt field current of the DC Motor/Generator, Model 8501, and the exciter current of the Three-Phase Synchronous Motor/Generator, Model 8507. Connections are made through 4 mm color-coded jacks.