The invention discloses a high-
voltage vacuum
circuit breaker having protection. The high-
voltage vacuum
circuit breaker comprises a
circuit breaker and a protection box, wherein a support plate is fixedly connected to the bottom of the circuit breaker, first threaded rods are in threaded connection with two sides of the bottom of the support plate, a
threaded pipe is fixedly connected to the bottom of each first
threaded rod, a press disc is in threaded connection with a surface of the
threaded pipe, and a
cushion pad is connected to an inner cavity of the
threaded pipe in a sliding way. By application of the circuit breaker, the protection box, the support plate, the first threaded rods, the threaded pipes, the press discs, the
cushion pads, support rods, fixed pieces, a base, shockproofsprings, second threaded rods, reset springs, fixed plates and rubber pads in a matching way, the tension degree o the shockproof springs can be conveniently adjusted, the shockproof springs cannot be soft, and the protection performance of the circuit breaker is improved; and meanwhile, the stability of the high-
voltage vacuum circuit breaker is also improved, the influence of an external forceon the circuit breaker is reduced very well, so that the circuit breaker is protected very well.