... and ISO 9001:2000 4.High quailty manufactor 3150-4000A fixed contact 109*1071.3150-4000A high quality electrical fixed contacts2.Used for High voltage vacuum circuit breaker ... manufactor, punctual delivery.1.name: fixed contact.2.rated current: 400A, 630A, 1000A, 1250A, 2000A, 3150A, 4000A.3.contact material: copper.4.surface treatment ...