Isolator's arc extinguishing structure

The utility model discloses an isolator's arc extinguishing structure, it includes base, the movable contact carrier who sets up in the base, fixes the moving contact on contact carrier and fix static contact on the base, the moving contact with circuit break switches on during the separation of quiet male contact, close on in the base the position of static contact is provided with the perpendicular to a plurality of arc extinguishing pieces that the base set up, the arc extinguishing piece is U-shaped sheet structure, the notch orientation of arc extinguishing piece the base is inboard, and with static contact inner corresponding. The utility model discloses in through will the arc extinguishing piece sets up to U-shaped sheet structure, when producing electric arc between moving contact and the static contact, compares with current " L " shape arc extinguishing bars piece, and the electromagnetic force of the arc extinguishing piece place production electromagnetic field of U-shaped is bigger, more does benefit to and " pushes electric arc " to the arc extinguishing piece and then extinguish, has effectively improved the arc extinguishing effect, has strengthened isolator's breaking capacity, has fine result of use.