The utility model discloses a long -range switching -on device of external circuit breaker of electric energy meter, it includes the casing and connect the driving motor who arranges in proper order on it, a deceleration mechanis, the clutching mechanism and the axle that closes a floodgate, clutching mechanism includes driving gear and driven gear, the one end of combined floodgate axle is fixed in the axle center of driving gear, the other end passes driven gear and stretches into in the casing and to link to each other with the handle of each utmost point circuit breaker, be equipped with the spring between driven gear and the casing, driven gear can follow the axial displacement and initiative gear engagement or separation of the axle that closes a floodgate. Driving motor output torque transmits behind the reduction gears to clutching mechanism in the use, and clutching mechanism drive to close a floodgate the axle and rotates and realize closing a floodgate, and stifled change or when exceeding non - anticipated torsion, driven gear compression spring breaks away from with the driving gear when closing operation power, and the manual separating brake that closes after can realizing closing a floodgate also can be to whole device realization surge protection under abnormal conditions to driving motor syntropy drive has all the time improved reliability and stability.