Features 1、High ‑ end high ‑ definition glass, fine polishing. Guide rail installation. 2、Internal components, precision chip, precision strong electrical conductivity. 3、Plug ‑ in module setting, easy maintenance. Electrical engineering applications. 4、Three phase four wire connection and level 2 protection, reliable in use. 5、4P Main number of poles. 420V Rated voltage and 20KA rated current. Specification Condition: 100% Brand New Item Type: Surge Protector Material: Nylon PA66 flame retardant material Color: White Rated Current: 20KA Setting Current: 40KA Installation Method: Guide rail installation Arc Extinguishing Medium: Magnetic blowing type Main Number of Poles: 4P Scope of Application: Electrical engineering Connection: Three phase four wire Type of Protection: Level 2 Response Time: 0.2 (s) Package List 1 x Surge Protector