The OHMITE RNS100E is a wirewound rheostat, a type of variable resistor used for controlling electrical current in circuits. These rheostats are characterized by their robust construction, high power handling capabilities, and precision resistance adjustment. They find applications in industrial automation, motor speed control, and laboratory equipment where accurate and stable resistance is required. Models H, J, G, K, L and N are listed under UL File No. E-10946 and CSA File No. 21309. All rheostats are 10% tolerance.