The OHMITE RKS500E is a wirewound rheostat, a type of variable resistor used in a wide range of industrial and commercial applications. These rheostats are known for their durability, high power handling capabilities, and precision. They are commonly used in motor speed control, lighting dimming, and other applications where adjustable resistance is required. The RKS500E series offers various configurations to meet specific application needs, including different wattage ratings, core types (open or enclosed), and shaft rotation options. Consult factory for details on specific dimensions and performance characteristics.