The OHMITE RUS500E is a wirewound rheostat, a type of variable resistor commonly used in industrial applications requiring precise control of electrical circuits. These rheostats are known for their durability, accuracy, and ability to handle high power dissipation. They are often found in motor speed controls, lighting dimmers, and other applications where adjustable resistance is needed. The RUS500E model offers a range of resistance values and is designed for reliable performance in demanding environments. Consult factory for details on specific dimensions and mounting options.