Disconnecting switch refers to a switching device used to disconnect power lines or circuits. Also known as an isolating switch or disconnect switch, it is designed to interrupt an electrical circuit for maintenance, overhaul, or other services in the absence of an electrical fault.

Typically, disconnecting switches usually contain movable terminal blocks and rotatable blades to effectively disconnect electrical connections during switching operations and avoid any possible electrical contacts and arc generation. This type of switch is commonly used in the energy industry and industrial equipment.