Pole-mounted circuit breaker

The utility model belongs to the field of power distribution networks, and relates to a pole-mounted circuit breaker, which is characterized in that a pole-mounted circuit breaker body is an epoxy resin pouring body with a columnar structure, a bulge structure is arranged on one side of the epoxy resin pouring body in the length direction, and the interior of the epoxy resin pouring body is of a cavity structure; the cavity structure is internally provided with an upper wire inlet conductive rod, a vacuum arc extinguish chamber, a copper foil flexible connector, a lower wire outlet conductive rod, a wire inlet lead insert, a power taking capacitor, a power supply side voltage sensor, a load side voltage sensor, an insulating pull rod and a current sensor; the upper wire inlet conducting rod is vertically and fixedly installed on the upper portion of the epoxy resin pouring body in the length direction, the lower wire outlet conducting rod is horizontally and fixedly installed in a protruding structure of the