... three phase 4. Power type:AC Supply HK Protect System Security Surge Protector1. Working principleHK lightning surge ... will occur frequently, so in order to effectively protect cnc machine tools,the HK lightning arrester is ... Lightning Protector,Polymer Arrester,Thunder Protection,Power surge Protector,Surge Suppressor,Overvoltage Protector,Thunder Protection,Electrical Control,System Protector, Direct ...