The invention discloses an isolation switch. The isolation switch comprises a static contact seat and an isolation switch body, wherein the static contact seat and the isolation switch body are arranged in a split way, and the isolation switch is flexible to assemble and is free from limitation of application equipment. The static contact seat is arranged in switch equipment, the isolation switchbody is arranged at a lower part of the static contact seat, the static contact seat comprises a T-type structure static contact piece and a support insulator, an upper side of the static contact piece is fixed on the support insulator, a lower side of the static contact piece is disconnected or connected with the isolation switch body, and the isolation switch body comprises a static contact piece assembly, a conductor, an insulation support and a support framework. The structure is simplified by the movable contact piece assembly, a traditional penetrating bolt fastening piece is eliminated,an upper group of pull spring and a lower group of pull spring are arranged, the charged body range is reduced, the insulation distance is shortened, the point discharging is reduced, the safety andthe reliability are improved, the assembly process is simplified, the contact pressure can be directly achieved by the upper group of pull spring and the lower group of pull spring, and the debuggingprocess is simplified.