The OHMITE RRS175E is a wirewound rheostat, a type of variable resistor used in a wide range of industrial applications for controlling voltage or current. These rheostats are known for their durability and precision, making them suitable for demanding environments. They feature a robust construction and are designed to withstand mechanical wear, although they have a finite lifespan due to their electro-mechanical nature. Models H, J, K, L, and N are UL and CSA listed. Refer to catalog #203 for detailed specifications and ordering information.