First-level SPD Backup Protector is a high-performance surge protection device designed for renewable energy systems, ensuring reliable overcurrent protection and preventing fire risks caused by SPD failure or power abnormalities. Compliant with international standards such as GB18802.1 and GB50057, this SPD backup protector delivers superior lightning current impact resistance, low residual voltage, and precise tripping performance under power frequency continuous current. Ideal for solar, wind, and energy storage systems, it effectively safeguards critical equipment against lightning strikes and electrical surges, enhancing operational safety and system longevity in demanding environments.More
