The invention relates to a magnetic actuator and a breaker equipped with the magnetic actuator. The magnetic actuator comprises a mechanism framework, wherein the mechanism framework is fixedly provided with a stator, the mechanism framework is further provided with a mover which is matched with the stator for use to move up and down back and forth to realize opening and closing operation of moving and static contacts, the mover is connected with a direct operated output rod capable of move up and down back and forth, the direct operated output rod is connected with an opening reed used for realizing closing energy storage and opening release. During opening, not only can the mover on the magnetic actuator output magnetic driving force, but also the opening reed further outputs driving opening force, the output driving force of the magnetic actuator can be enhanced, an opening speed is effectively improved, moreover, when the magnetic actuator is out of nimbleness because of power failure, smooth opening can be guaranteed through utilizing the driving force released by the opening reed, and thereby effective opening is guaranteed.