The present invention relates to a circuit breaker actuator electromagnetic repulsion. The invention housing 10 and the housing first fixed electrode 20 that is provided inside, and a work space (21) opening on both sides inside the formation of 10, the first fixed electrode 20, the working space 21 is provided so as to reciprocate on both sides of the first fixed electrode 20 and a pair of shift of an energizing electrode 50, is spaced apart from the first fixed electrode 20, the housing ( 10) the second fixed electrode 60 and the work coil (30, 40) for transmitting side to the other electric power supplied from one side being respectively provided on both sides of the inner and selectively energized in contact with the moving electrode 50 of the pair It includes. And thereby the operating coil (30, 40) is selectively moved in a direction to generate a magnetic force by the induced current to be separated from the second fixed electrode 60, the movable electrode 50. The so the same invention by the movement of the moving electrode 50 by using induced currents generated by the closing coil 30 and the opening coil 40 to perform the open operation, as well as the structure of the circuit breaker be simplified, moving electrode increase the moving speed of 50.