The RES75RE is a Model E series wirewound rheostat designed for use as a variable resistor. It provides a resistance of 75 ohms with a power rating of 12.5 watts and can handle a maximum current of 0.40 amps. This open-core device features a standard shaft with a mechanical rotation of 300 degrees and a maximum operating voltage of 305V RMS. With its robust construction and panel-mount design, the RES75RE is suitable for industrial controls, power supply adjustments, and other applications requiring reliable, high-power variable resistance.