Features The internal components have accurate chips, precise accuracy, strong conductivity and better thunder protection. Using high‑end high‑definition glass, after fine grinding and polishing Adopt plug-in module setting, simple maintenance and convenient use With great workmanship, can perfect replacement for the old one Small size, easy to carry and store, convenient to use and with good performance Specification: Item Type: Surge Protection Device Rated Current: 10ka Setting Current: 20ka Installation Method: Rail installation Arc Extinguishing Medium: Magnetic blowing Rated Voltage: 420V Number of Main Contacts: 2P Scope of Application: Electrical Wiring Method:3-phase 4-wire Protection Type: Level 2 Response Time: 0.2 (s) Package List: 1 x Surge Protection Device Package List 1 x Surge Protection Device