... It has advantage of firm structure, high reliability, contact from the large open, better breaking capacity and smaller bounce at contact ... building, to control the equipments used eletricity such as high-voltage motor of 7.2kV or under 7.2kV, ... 100times)6300A, 6300A, 4000A, 2000AMain circuit breaking capacity (A/25times)5040A, 5040A, 3200A, 1600ALimit breaking capacity(A/3times)6300A, 6300A, 4000A, ...