The invention discloses a contactor having low eddy-current loss. The contactor comprises a moving contact, an inductive coil, a rotating bar, an iron core, a fixed contact, a mounting base, a horizontal cross bar and a bottom plate, wherein the inductive coil, the mounting base and the horizontal cross bar are vertically arranged on the bottom plate, the inductive coil is arranged between the mounting base and the horizontal cross bar, the iron core formed by a plurality of silicon steel sheets by overlapping and riveting is also arranged on the end surface of the inductive coil, a shading coil is arranged on the end surface of the iron core, the fixed contact is also arranged on the mounting base, the moving contact is fixed at one end of the rotating bar, the horizontal cross bar is movably connected at the other end of the rotating bar, an armature is also arranged on the surface of the rotating bar, the armature faces the iron core, a wiring terminal is arranged under the rotating bar and on the mounting base, and the moving contact faces the fixed contact. According to the contactor, the structure is simple, two magnetic flows which have different time phases pass through the iron core by the shading coil due to the special iron core so that the total magnetic flow cannot exceed the zero, the noise is reduced, the eddy-current loss is reduced and the service life is prolonged.