Grid SPD Backup Protection Device

Grid SPD Backup Protection Device | Anhui Hongke Product Description The Grid SPD Backup Protection Device is a dedicated backup protective solution for power grid‑side SPD applications. Functioning as a professional Voltage Protector and matched Surge Protector, it delivers reliable Power Protection for grid‑connected surge protection loops. As an essential Electrical Safety Device for low‑voltage grid access circuits, this device is installed in series at the upstream side of grid SPD. When grid‑side surge protective devices suffer short‑circuit failure induced by grid switching surges or lightning impulses, it triggers over‑current backup protection rapidly, limits fault within local branches and prevents fault feedback interference to public power grid infrastructure. Key Features Grid‑adapted design, 20KA discharge‑current rating fits low‑voltage user grid access terminal protection requirements Robust anti‑fluctuation performance, coping with frequent transient disturbances fro…