Our wholesale 3 phase 10-20ka 385V SPD offers top-of-the-line overvoltage surge protection and lightning protection at lightning protection class II+III. As a factory direct supplier, we offer a quality product at an affordable price. Our SPD is designed to protect three-phase systems from lightning strikes and other voltage surges that can cause damage to electrical appliances and sensitive equipment. With a surge current rating of 10-20ka, you can rest assured that our SPD can handle the toughest electrical surges and lightning strikes. Don't take chances with your electrical system - choose our reliable and effective SPD for maximum protection against overvoltage surges and lightning strikes.