The Surge Protection Device category specializes in safeguarding electrical systems against transient overvoltage events, with a focus on lightning protection and sensitive equipment defense. Core products include Type 1/2/3 SPDs designed for LPZ0-3 zone protection, featuring <1ns response time and 20kA-100kA discharge capacity. Advantages lie in hybrid protection technology combining MOV+Gas Tube elements, ensuring long-term stability under repetitive surge conditions while meeting IEC 61643-1 standards. Key parameters highlight 2.5kV L-N voltage ratings, IP65 enclosures for harsh environments, and LED/remote monitoring interfaces. Modular designs support DIN-rail mounting and scalable solutions for data centers, solar arrays, and smart buildings, with thermal decoupling technology preventing fire risks. This classification emphasizes intelligent monitoring and energy absorption capability, providing reliable first-line defense against voltage spikes in mission-critical applications.