Switzerland, Jan. 14 -- When Australian steelmaker InfraBuild needed two new circuit breakers to provide backup for its main electric arc furnace, ABB had the solution - its VD4-AF vacuum circuit breaker with an innovative servomotor actuation system that delivers more than five times the operations of a standard breaker, supporting greater reliability andsafety as well as lower operational costs.But because this high-performance equipment was based on electronic technology rather than the spring-actuated mechanism of InfraBuild's aged circuit breaker, the company was cautious."Even though it sounded great, we felt things could go wrong because there are a lot of electronics involved, compared to the old mechanical-linkage style of construc...