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.