Abb lightning protection surge is not connected up and down. There is a chip partition in the middle. It will not be connected under normal circumstances. abb lightning surge protection refers to ABB surge protector, which is an indispensable device for lightning protection of electronic equipment. It used to be called lightning arrester or overvoltage protector, and the English abbreviation is SPD. Even small power surges or voltage spikes can destroy or affect the performance of expensive electronic equipment such as computers, phones, faxes, televisions, audio and video equipment and other household appliances and tools. The widespread use of computer chips increasingly requires surge protection because these chips are very sensitive to voltage fluctuations. The ABB surge protector acts like a power sponge, absorbing dangerous extra voltage and preventing it from entering the equipment.