The utility model relates to a direct current high speed circuit -breaker handcart impels interlock device, including screw -nut advancing mechanism, clutching mechanism, direct current high speed circuit -breaker separating brake mechanism, operation interlocking device integrates, screw -nut advancing mechanism includes bolt lead screw, nut piece, bolt lead screw passes the nut piece, clutching mechanism includes wheeling unit, separation and reunion axle sleeve, bolt lead screw's one end stretches into in the wheeling unit, separation and reunion axle sleeve cover is in bolt lead screw's no. 1 serves. The utility model discloses can avoid appearing the frequent operation of other screw mechanism and lead to the lead screw to damage and the condition of unable operating breaker handcart, reduce the step of artificially judging the direct current breaker handcart and whether targetting in place, ensure the disconnected direct current high speed circuit -breaker of manual branch that the handcart can be reliable under the various condition, safe and reliable, the mistake operation circumstance who avoids the human factor to cause ensures the operating personnel personal safety.