3 Phases Isolating Switch 1. 12kV,400-1200A, 50Hz,3 phases 2. Usage: Power 3. L/C or ... T/T 4.Material:porcelain 12kV ,400-1200A, 50Hz, 3 Phases Isolated Switch GN19-12Q Technical Parameters for ... and outline drawings shall be provided upon request. 12kV ,400-1200A, 50Hz, 3 Phases Isolating Switch GN19-12Q