A circuit breaker, comprising: an open-close mechanism section; a trip device including an electromagnetic device for instantaneous trip use; and an open-close contact section, wherein the electromagnetic device for instantaneous trip use includes: a coil; an insulation pipe provided in the coil; a fixed core provided at one end of the insulation pipe; a movable core to be inserted into the insulation pipe, and is moved in the insulation pipe by a magnetic flux generated by the coil to operate the trip device; a spring provided between the movable core and the fixed core to bias the movable core; a yoke whose one end is provided at an outside end portion of the fixed core, and the other end is provided to a side of the movable core; and a stator (5; 500) having a stator contact coming close to and moving away from a contact of a movable element, and being a conductive plate jointed to an end of the coil, engaging the fixed core, and fixed to the yoke, and the stator (5; 500) forms a current path between the stator contact and a joint section with the coil, characterized in that the current path is for a current flow circulation along a ring-shaped portion of the stator (5; 500) and is so formed that the current flow is directed in the same direction as for the coil, the ring-shaped portion being coaxial with the coil. an open-close mechanism section; a trip device including an electromagnetic device for instantaneous trip use; and an open-close contact section, wherein the electromagnetic device for instantaneous trip use includes: a coil; an insulation pipe provided in the coil; a fixed core provided at one end of the insulation pipe; a movable core to be inserted into the insulation pipe, and is moved in the insulation pipe by a magnetic flux generated by the coil to operate the trip device; a spring provided between the movable core and the fixed core to bias the movable core; a yoke whose one end is provided at an outside end portion of the fixed core, and the other end is provided to a side of the movable core; and a stator (5; 500) having a stator contact coming close to and moving away from a contact of a movable element, and being a conductive plate jointed to an end of the coil, engaging the fixed core, and fixed to the yoke, and the stator (5; 500) forms a current path between the stator contact and a joint section with the coil, characterized in that the current path is for a current flow circulation along a ring-shaped portion of the stator (5; 500) and is so formed that the current flow is directed in the same direction as for the coil, the ring-shaped portion being coaxial with the coil. a coil; an insulation pipe provided in the coil; a fixed core provided at one end of the insulation pipe; a movable core to be inserted into the insulation pipe, and is moved in the insulation pipe by a magnetic flux generated by the coil to operate the trip device; a spring provided between the movable core and the fixed core to bias the movable core; a yoke whose one end is provided at an outside end portion of the fixed core, and the other end is provided to a side of the movable core; and a stator (5; 500) having a stator contact coming close to and moving away from a contact of a movable element, and being a conductive plate jointed to an end of the coil, engaging the fixed core, and fixed to the yoke, and the stator (5; 500) forms a current path between the stator contact and a joint section with the coil, characterized in that the current path is for a current flow circulation along a ring-shaped portion of the stator (5; 500) and is so formed that the current flow is directed in the same direction as for the coil, the ring-shaped portion being coaxial with the coil.