한번에 많은 전류를 감소시킬 수 없는 상황에 재차 동작을 실행해야하므로 차단시간이 길어진다는 단점도 있다.
There is also a disadvantage in that the cut-off time is lengthened because the operation must be executed again in a situation where a large amount of current may not be reduced at once.