The OHMITE RUS225E is a wirewound rheostat, a type of variable resistor commonly used in industrial control systems and applications requiring precise resistance adjustments. These rheostats are known for their durability and ability to handle high power dissipation. The RUS225E model is designed for robust performance and is suitable for applications such as motor speed control, lighting dimming, and volume adjustment in audio equipment. Consult factory for details on specific dimensions and performance characteristics. Models H, J, K, L and N are listed under UL File No. E-10946 and CSA File No. 21309.