Integrated special medium voltage dual power switching device with mechanical interlocking

The invention provides an integrated special medium voltage dual power switching device with mechanical interlocking. The device includes a first vacuum circuit breaker, a second vacuum circuit breaker, a first connecting rod and a second connecting rod, wherein after manual or electric closing, a first main shaft rotates to drive the first connecting rod to eject upward, the first vacuum circuitbreaker moves to a second unlocking ejector position, completing the unlocking action is made to be impossible, the second vacuum circuit breaker cannot be closed. The structure of the second vacuum circuit breaker is exactly the same as the structure of the first vacuum circuit breaker, after closing, the first vacuum circuit breaker can be prevented from closing by the same process. The device is advantaged in that defects of misoperation due to failure of electronic components or failure of the trip indication in a current electrical appliance chain solution are avoided, that one of the twovacuum circuit breakers i