The OHMITE RGS400E is a wirewound rheostat, a type of variable resistor commonly used in industrial control systems and applications requiring precise resistance adjustments. It features a robust design capable of handling significant power dissipation and offers a wide resistance range. The rheostat's wirewound construction ensures stability and accuracy over time, making it suitable for demanding environments. Consult factory for details on specific dimensions and mounting options. Models H, J, G, K, L and N are listed under UL File No. E-10946 and CSA File No. 21309.