CSNB-80 series surge protector is designed according to GB18802.1, IEC61643-1 surge protection standard, applicable to AC 50Hz, 220v/380v and below TN-S, TN-C-S, TT, IT power supply systems. Each module has a rated discharge current of In (8/20μs) up to 40kA and a maximum discharge current of Imax (8/20μs) up to 80kA. It has passed the national professional lightning protection II class test and is suitable for areas with high lightning risk (LPZ2 or LPZ2 and LPZ3 intersection areas). It can be applied to the secondary lightning protection of AC power systems. Through the cooperation of the front and rear-stage surge protectors, the lightning energy is gradually released to protect the distribution power supply and terminal power equipment.