The RHS25RE is a 25R 25W panel-mounting Wirewound Rheostat with screwdriver slot adjustment and linear track taper. This rheostat has standard shaft, open core and synthetic resin containing non-mercurial fungicide sealing. The rheostat elements moulded into a single, integral structure, metal cover protects and shields the internal parts. Since the rheostat is electro-mechanical device, it is subject to mechanical wear and therefore it has a finite life.