As a factory, we are proud to offer our wholesale customers the high-quality {3 phase 10-20ka 385V SPD, overvoltage surge protection, lightning protection class II+III spd HS2-20}. This product provides reliable protection against the damaging effects of lightning strikes and other electrical surges. The 3 phase design ensures that all three lines of current are protected, while the 10-20ka rating ensures that even the most powerful surges are dealt with effectively. With a voltage rating of 385V, this SPD is designed to handle the electrical demands of today's equipment. Our lightning protection class II+III SPD is the perfect solution for industrial settings, data centers, and other facilities that require top-of-the-line surge protection. Trust us to provide you with the best products available.