7 min read What exactly is Vacuum Circuit Breaker? A vacuum circuit breaker is really a type of breaker that makes use of a vacuum as the medium to extinguish electrical arcs.?? ???????? ???????? ?????? ??????? ???? ???? ????? ????? ???? ?? ???????? ?? ????? ?????? ?? ???????? ???? ???? ????? ???? ?? ????? ???? ???, ???? ???? ?? ?????? ???? ??????