What Is The Protection Mode Of A Surge Protector?
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surge protective device elements can be connected between L (phase line; also called live wire), N (zero line; also called neutral wire), and PE (protective wire), that is, relative phase, relative neutral line, relative ground, neutral line to ground and their combinations (L-L, L-N, L-PE, N-PE), that is, the current path of the surge protection device components between the terminals is protected. These connection methods are called protection modes.
At present, most of the protection modes of surge protectors are 4 protection modes (L-PE, N-PE), that is, the three live wires are connected to the protective wire, and the neutral wire is connected to the protective wire.
