The OHMITE RES150E is a wirewound rheostat, a type of variable resistor used for controlling electrical power. These devices are characterized by their robust construction and ability to handle higher power levels compared to standard potentiometers. They are commonly employed in industrial equipment, motor speed control, and other applications requiring adjustable resistance. Models H, J, G, K, L and RES/REL are available with various specifications including Ohmic Voltage, Watts range, and Shaft Rotation. Dimensions are for reference only, and factory consultation is recommended for detailed specifications. Due to their electro-mechanical nature, these rheostats have a finite lifespan.