The RES500E is a Model E series wirewound rheostat with a resistance of 500 ohms and a power rating of 12.5 watts. This component features an open-core construction and is designed to operate with a maximum of 305V RMS and a maximum current of 0.16A. It provides an electrical rotation of 300 degrees (±5°) and is built for panel mounting on surfaces up to 0.125 inches thick. The RES500E is suitable for industrial controls, test equipment, and other applications requiring adjustable power and voltage settings.