High-performance arc extinguishing chamber arc extinguishing system for direct-current relay

The utility model discloses a high-performance arc extinguishing chamber arc extinguishing system for a direct-current relay. The motor comprises a load leading-out terminal A, a load leading-out terminal B, a moving plate and a ceramic cover. The moving plate is provided with a moving contact A and a moving contact B; the load leading-out terminal A, the load leading-out terminal B and the movingplate are installed in the ceramic cover in a sealed manner. The ceramic cover is provided with a first arc extinguishing installation cavity and a second arc extinguishing installation cavity. Arc extinguishing bases are installed in the first arc extinguishing installation cavity and the second arc extinguishing installation cavity respectively, each arc extinguishing base comprises two arc extinguishing base plates and a plurality of arc extinguishing grid pieces, the two arc extinguishing base plates of each arc extinguishing base are arranged in parallel, and all the arc extinguishing grid pieces of each arc ext