Entergy Mississippi has taken another step toward meeting the company’s environmental goals with the installation of a high-voltage clean air circuit breaker at one of its substations in Vicksburg.

Siemens has launched a refined medium-voltage circuit-breaker. The 3AH4 vacuum circuit-breakers have an operating current of 4000 A for the 36-kV voltage level. It is the first vacuum circuit-breaker ...

If a motor isn't adequately protected, a short circuit will likely result in premature replacement. Then there's the problem of nuisance tripping upon initial start-up because the magnetic setting of ...