Quick breaking circuit breaker

The invention relates to a quick breaking circuit breaker, which comprises a main shaft, a spring operating mechanism, a permanent magnet operating mechanism and an opening and closing holding mechanism, and is characterized in that the main shaft is respectively connected with three insulating pull rods of the circuit breaker through three groups of triangular yoke plates which are arranged in the same direction; the spring operating mechanism comprises a closing assembly connected with the main shaft and a closing spring arranged on one side of the closing assembly, and the closing assembly can store energy for the closing spring to drive the circuit breaker to be closed; an actuating rod of the permanent magnet operating mechanism is connected with the main shaft through a connecting plate so as to drive the circuit breaker to open; the opening and closing holding mechanism comprises a holding spring, and the torque of the holding spring and the torque generated by the main shaft are mutually balanced, so