NXU-ⅡG series Surge Protective Device (SPD) is designed for lightning protection and transient overvoltage protection in low-voltage electrical distribution systems. The product can effectively absorb and discharge high-energy surge currents caused by lightning strikes or switching operations, protecting electrical equipment from damage caused by transient overvoltage. The NXU-ⅡG series provides multiple specifications, including different maximum discharge current capacities such as **20kA, 40kA, 65kA, and 100kA**, as well as various maximum continuous operating voltages including **255V, 275V, 320V, 385V, and 440V**, meeting different requirements for electrical equipment protection. The modular design allows convenient installation, replacement, and maintenance. Various pole configurations are available, including **1P, 2P, 3P, 4P, 1P+N, and 3P+N**, making it suitable for different power distribution system configurations. The product complies with **GB/T 18802.1 and IEC/EN 61643-11 standards** and has passed certifications including **CQC, CE, and CB**, ensuring reliable performance and long-term operational stability.