1.copper clubs contact . 2.Fit to medium voltage indoor circuit breaker . 3.12kV ,40.5kV ,630A,1250A,1600A-2000A ,3150A,4000A. We ... , transducers . 630A, 1250A ,2500A , 3150A and 4000A contactor box , club contact , fix contact, arm contact and jaw contact . 630A and 1250A VS1 circuit breaker . 630A ... -12 and KYN61 high voltage switchgear components! 12KV circult breaker contact