The main reasons why the disconnecting device recommended by the manufacturer should be used are:
- if the disconnecting device's rating is lower than the recommended rating, we risk the disconnecting device opening in normal operation.
- if the disconnecting device's rating is higher than the recommended rating, we risk non-disconnection during a temporary voltage surge. An overload which is too high may destroy the surge arrester.

Đã phát hành cho: Schneider Electric Việt Nam