Munich – Schaltbau has introduced a special innovation for AC-driven electric locomotives and multiple units: an AC vacuum circuit breaker that can almost do without any secondary supply energy for ...

Circuit breakers are used in nearly all electrical systems — from residential dwellings to electric utility facilities. We rely on them to protect our systems from damaging overcurrents and short ...

is a high-tech electrical device in medium voltage. This three-phase AC circuit breaker, operating at a frequency of 50 Hz, is for outdoor application. It is ideal for power transmission and ...

SafeLink CB, ABB's secondary SF6 gas-insulated ring main unit switchgear ABB's SafeLink CB secondary SF6 gas-insulated ring main unit (RMU) switchgear was designed and developed at the company's ...

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 ...