The utility model provides a circuit breaker operating device of institutional advancement, belongs to the low -voltage electrical equipment field. Including a pair of curb plate, the switch -on halfshaft of setting between a pair of curb plate, the combined floodgate lever, link assembly, the energy storage lever, the cam pack, energy storage spring unit, switch -on half shaft and the cooperation of combined floodgate lever hasp, combined floodgate lever and the cooperation of cam pack hasp, when carrying out the feed motion, rotate by external drive switch -on half shaft, switch -on half shaft rotates the action of back unblock combined floodgate lever, the action of combined floodgate lever unblock cam pack, the action of cam pack unblock energy storage lever, the energy storage leveris after by the unblock, energy storage spring unit promotes the energy storage lever and rotates, thereby the feed motion is accomplished to energy storage lever drive connecting rod subassembly, characteristics are: bearing assembly is installed to switch -on half shaft's at least one end, and switch -on half shaft passes through bearing assembly and installs on the curb plate. Frictional forcewhen making the semi -axis rotate can reduce, and mechanism's curb plate is difficult to damage the increased longevity simultaneously.