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        TDVC-660/25D vacuum circuit breaker
           Nominal voltage                                 25kV
           Max. working voltage                            33kV
           Rated current                                   1000A
           Rated short-circuit break-off capability        20kA
           Short-circuit breaking capacity                 660MVA
           Mechanical service life                         300,000 times
         
           TDVC-660/25D vacuum circuit breaker utilizes high insulation performance in vacuum to restrain arc spread, then, performs breaking, which is featured by very high comprehensive performance and high electrical performance; low-voltage part is design as compact and light weight structure, and high reliability in operation, such vacuum circuit breaker is usually equipped in the high-voltage equipment box on EMUs under-frame and is applicable to install in equipment box of high-speed EMUs.
         
         
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