Three-phase common box type circuit breaker and high-voltage switch equipment

The invention relates to a three-phase common box type circuit breaker and high-voltage switch equipment. The circuit breaker comprises a shell and arc extinguish chambers, and each arc extinguish chamber comprises a wire outlet seat; the circuit breaker further comprises commutation conductors connected to the wire outlet seats of the arc extinguish chambers of the corresponding phases, the commutation conductors extend in parallel, the extending direction is defined as the first direction, and the commutation conductors are sequentially arranged in the direction perpendicular to the first direction. The three commutation conductors arranged in sequence are defined as a first commutation conductor, a second commutation conductor and a third commutation conductor; the commutation conductor comprises a first connecting part and a second connecting part which are arranged in a staggered manner, the first connecting part is connected with the wire outlet seat, the second connecting part is used for being connect