Supply of 420 kV, 245 kV and 123 kV circuit breakers June 3, 2016 | Europe Tenders International competitive bids are invited for the supply of the 420 kV, 245 kV and 123 kV outdoor three-pole circuit breakers of SF6 quenching medium type. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password