Miniature circuit breaker capable of rapid breaking

A miniature circuit breaker with quick current breaking capability, comprising:

• a miniature circuit breaker body, a current transformer CT1, a zero-sequence current transformer CT2, and a smart controller module;
• the current transformer CT1 and the zero-sequence current transformer CT2 are straddled on main-loop outgoing terminals of the miniature circuit breaker body;
• the smart controller module is abreast mounted beside the miniature circuit breaker body;
• the current transformer CT1 and the zero-sequence current transformer CT2 are connected to different input terminals of the smart controller module by a signal flat cable, respectively;
• wherein the miniature circuit breaker body is internally provided with a main arc extinguishing chamber, a fixed contact, a movable contact, a tripping mechanism, a magnetic tripping push rod, and a handle, wherein, a rotated-hinge repulsive force structure is applied between the fixed contact and the movable contact;
• the movable contact is mounted on the tripping mechanism through a pin shaft;
• the magnetic tripping push rod is arranged below the tripping mechanism;
• the tripping mechanism is further provided with a torsional spring to press the movable contact against the fixed contact;
• and
• the smart controller module is provided with a shunt tripping device which controls a switch breaking of the miniature circuit breaker.