MAGNETIC-DRIVEN ARC-SUPPRESSING UNIT WITH MULTIPLE ARC CONTACT POINTS

摘要

PURPOSE: A magnetic-driven arc-suppressing unit with multiple arc contact points is provided to reduce the damage of arc contact points by improving the structure of the magnetic-driven arc-suppressing unit. CONSTITUTION: A chamber(102) has three-isolated polygon spaces and is provided with upper and lower holes on the center of upper and lower surfaces. An upper conductor is inserted into the upper hole and is provided with an exhaust opening. A lower conductor has the same shape of the upper conductor and is inserted into the lower hole to opposite to the upper conductor. A movable electrode(105) is provided with a first movable pin(117) and a plate arc runner(116). A fixed electrode has the same shape of the movable electrode(105) and is fixed on the upper portion of the lower conductor and provided with a second movable pin(118) corresponding to the first movable pin(117).