CONTACT MECHANISM AND ELECTROMAGNETIC CONTACTOR USING SAME

摘要

There are provided a contact mechanism that can suppress electromagnetic repulsion opening a movable contactor at the time of the application of a current without the increase of the size of the entire structure and is adapted to improve arc-extinguishing performance, and an electromagnetic contactor using the contact mechanism. The shape of at least one of an immobile contactor (2) that includes a pair of immobile contact portions (2a, 2b) and a movable contactor (3) that includes a pair of movable contact portions (3b, 3c) being capable of coming into contact with and being separated from the pair of immobile contact portions (2a, 2b) is set to a shape that generates a Lorentz force resisting electromagnetic repulsion in a contactor opening direction generated between the immobile contact portions and the movable contact portions when a current is applied. The immobile contactor and the movable contactor are inserted in a current path. Magnetic bodies (14a, 14b) suppressing a force driving arcs, which are generated between the pair of immobile contact portions and the pair of movable contact portions, to the immobile contactor on the opposite side are disposed on at least one of the immobile contactor and the movable contactor.