The OHMITE RCL200E is a wirewound rheostat, a type of variable resistor used for controlling electrical power. These rheostats are designed for durability and precision in industrial environments, offering adjustable resistance for applications such as motor speed control, lighting dimming, and volume adjustment. They are subject to mechanical wear and have a finite life. Models H, J, K, L and N are listed under UL File No. E-10946 and CSA File No. 21309. All rheostats are 10% tolerance.