NU5-I+II surge protective device conforms to IEC/EN 61643-11 standard. Itis applicable to the power distribution and control system with AC 50/60Hz and rated voltage of singlphase 230V/three phase 400V. It meets the SPD Class II test and is used to suppress the transient overvoltage below the impulse overvoltage of equipment, discharge the surge energy, and protect the system circuit and equipment.
Main functional characteristics of surge protective device: It has L-PE, N-PE, L-N protection modes, and
is suitable for various power grid systems; With aging and overheating prorection, body deterioration
indication, plug-in structure, optional remote alarm function.