Contactor

The utility model relates to a contactor. The contactor comprises a lower shell, an upper shell and a contactor assembly, a partition plate is arranged between the upper shell and the lower shell; thecontactor assembly comprises a magnetizer, a pole piece, a coil, a static iron core, a movable iron core, a support, a counterforce spring, a main contact plate, an auxiliary contact plate, a main contact bridge, an auxiliary contact bridge, a contact bridge spring and an arc extinguishing member. An opening is formed in the side wall of the lower shell, a dust removal block is arranged at the opening, an adhesive ball is arranged on the dust removal block, glue is arranged on the spherical surface, an exhaust channel is formed in the dust removal block, the exhaust channel is connected withthe adhesive ball, and an insulating rubber gasket is arranged on the side wall of the dust removal block. Due to the design of the dust removal block on the lower shell, dust in the lower shell can be effectively adsorbed, an