A five-prevention interlocking pole type high-voltage switchgear includes a pole bracket, embedded poles, and spring and earthing isolated switch operating mechanisms; every three poles are arranged in a row on the bracket, the spring operating mechanism is joined with the switch operating mechanism through the chamber door interlocking piece and mechanism interlocking piece; the chamber interlocking piece, mechanism interlocking piece and door lock plate are joined, the door lock plate is opposite the opening semi-axis pinch plate in the spring operating mechanism and the door lock plate is set with a door lock pin. Chamber interlocking piece movement is used to open or close the switch operating mechanism crank operation hole and corresponds to the start of close brake operation and limit brake of opening pinch plate in the spring operating mechanism and the limiting and opening of the opening semi-axis and cable chamber door in the spring operating mechanism.

A five-prevention interlocking pole type high-voltage switchgear includes a pole bracket, embedded poles, and spring and earthing isolated switch operating mechanisms; every three poles are arranged in a row on the bracket, the spring operating mechanism is joined with the switch operating mechanism through the chamber door interlocking piece and mechanism interlocking piece; the chamber interlocking piece, mechanism interlocking piece and door lock plate are joined, the door lock plate is opposite the opening semi-axis pinch plate in the spring operating mechanism and the door lock plate is set with a door lock pin. Chamber interlocking piece movement is used to open or close the switch operating mechanism crank operation hole and corresponds to the start of close brake operation and limit brake of opening pinch plate in the spring operating mechanism and the limiting and opening of the opening semi-axis and cable chamber door in the spring operating mechanism.

A fastener is provided for ganging or joining two or more switch handles to one another. The fastener includes a head at one end and an elongated shank extending from the head. The shank includes a threaded portion adjacent the head that threadingly engages one of the switch handles. The shank extends longitudinally from the threaded portion through the threadingly engaged switch handle and through one or more additional switch handles to gang the switch handles to one another.

A high voltage folding disconnect switch including a folding switch blade that folds as it opens or closes and which is divided into a fixed blade portion attached to a rotating insulator and a folded blade portion having an electric contact surface engaging a break jaw contact surface. A trigger lever-locking bar is mounted to the fixed blade portion. The trigger lever-locking bar includes a trigger finger for contacting a trigger surface mounted on a stationary insulator. The trigger lever-locking bar has a cam slot for interaction with a cam follower pin that locks the movement of the folding blade so that premature straightening of the blade is prevented until any ice build-up on the switch has been alleviated.

A high voltage folding disconnect switch including a folding switch blade that folds as it opens or closes and which is divided into a fixed blade portion attached to a rotating insulator and a folded blade portion having an electric contact surface engaging a break jaw contact surface. A trigger lever-locking bar is mounted to the fixed blade portion. The trigger lever-locking bar includes a trigger finger for contacting a trigger surface mounted on a stationary insulator. The trigger lever-locking bar has a cam slot for interaction with a cam follower pin that locks the movement of the folding blade so that premature straightening of the blade is prevented until any ice build-up on the switch has been alleviated.