... .Specialize in copper fixed contact 2.Used for Vacuum Circuit Breaker 3.CE and ISO 9001:2000 4.High quailty ... high quality electrical fixed contacts2.Used for High voltage vacuum circuit breaker, switchgear, load switch etc.3.Prevent discoloration, avoiding oxidation ... quality manufactor, punctual delivery.1.name: fixed contact.2.rated current: 400A, 630A, 1000A, 1250A, 2000A, 3150A, 4000A.3. ...