The utility model discloses a circuit breaker fracture transmission and circuit breaker that uses this fracture transmission, circuit breaker fracture transmission includes the transmission turning arm, the transmission turning arm has the fixed hinge contact, power take off point has on the transmission turning arm, be equipped with the activity hinge joint point on the transmission turning arm, in the articulated middle transmission pole that is equipped with of activity hinge joint point department on the transmission turning arm, power point and resistance point have on the middle transmission pole, the articulated application of force of the rotation pole that has is gone up to the power point of middle transmission pole, it is used for the middle transmission pole in transmission turning arm area and applys to the middle transmission pole when the fixed hinge contact rotates and force it with the direction with transmission turning arm rotation in the opposite direction around activity hinge joint point pivoted effort to rotate application of force pole, the resistance point of middle transmission pole for with power take off point synchronization action, be arranged in the 2nd power take off point be connected with the moving contact rod -drive of two fracture second fractures of circuit breaker fracture unit. Above -mentioned fracture transmission simple structure, easy operation is convenient.