Circuit breakers are at the heart of every modern power system. To ensure the systems are properly protected, it’s essential the breakers should operate correctly when called upon to do so. This means ...

Regular circuit breaker testing is essential to verify their ability to protect electrical systems during faults, preventing costly failures and safety hazards. Decision-makers often underestimate the ...

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 ...

ABB has released the 38 kV R-MAG outdoor vacuum circuit breaker. First introduced in 2002 for 15 kV and 27 kV applications, the R-MAG breaker uses a magnetic actuator design that has only one moving ...