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 ...
Siemens is the first company to successfully receive UL listing for a 120-volt, single pole solid-state circuit breaker. This press release features multimedia. View ...
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