Indoor disconnectors, loadbreak and earthing switches are used for the visible disconnecting of the electric circuits. Standard voltage levels are from 1kV to 123kV. The devices are standardly produced and tested according to the IEC standards; the selected devices are tested also according to the GOST, ANSI and IEEE standards. All devices have possibility to be controled by electric motor or hand drives. The devices can be in one, two, three or multiple pole design.