Erlangen, Germany, October 23, 2009 -- Siemens is meeting the steel industry's growing demand for every higher performance levels in melting down scrap metal by launching a refined medium-voltage ...

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 ...

Large circuit breakers in service today at industrial and commercial facilities come in many shapes, sizes, configurations, and voltage ratings — with the primary purpose of protecting electrical ...

At 18:36 pm on Nov 13, following the issuance of instructions from the dispatching center, the circuit breaker 31322 of the No 5 capacitor in the Taole 220 kilovolt substation in the Shizuishan area ...