... three phase 4. Power type:AC Supply HK Protect System Security Surge Protector1. Working principleHK lightning surge protection ... in the grid surge, its characteristic is the fast response, the complete cure instantly, the surge wave power ... Protector,Surge Suppressor,Overvoltage Protector,Thunder Protection,Electrical Control,System Protector, Direct Strick Protection, Power solutions,Surge Diverter ...