Quick breaker

The utility model discloses a quick breaker which comprises a first shell, a grid piece, a first arc channel piece, a second arc channel piece and a second shell, according to the quick breaker, a first exhaust hole is formed in the connecting position of a tubular column and a bottom plate, and a first air guide groove and a first pressure relief groove are formed in the position, right opposite to the first exhaust hole, of the first shell; in this way, high-temperature and high-pressure gas generated in the copper bridge breaking process of the grid pieces can be shunted into the first gas guide grooves and the first pressure relief grooves through the first exhaust holes, so that the resistance of the high-temperature and high-pressure gas to the descending grid pieces is reduced, the descending speed of the grid pieces is increased, the breaking process is shortened, and short-circuit current can be more quickly broken. In addition, the high-temperature and high-pressure gas shunted into the first pressu