If on-load switching is not required, the disconnection operation can be carried out safely without the need for other switching equipment. If on-load switching is required, in conjunction with connectors or circuit breakers, the disconnection operation can be carried out safely. SRS type rotary disconnectors are manufactured as 3 poles and 2 positions. Together with SES type earthing disconnectors, SRS type rotary disconnectors can be used as 3 poles and 3 positions.