Introduction: Surge Protective Devices (SPDs) serve as critical defense components in low-voltage electrical systems, safeguarding equipment against transient overvoltages from lightning strikes and switching operations. As technology evolves, the International Electrotechnical Commission (IEC) continually refines SPD standards. On December 20, 2024, IEC released the landmark IEC 61643-01:2024 standard, superseding the previous IEC 61643-11:2011. This article examines the pivotal [...]

Surge Protection Devices (SPDs) are vital components in safeguarding electrical installations—whether in industrial plants, commercial buildings, or residential properties—from damaging voltage transients caused by lightning strikes, switching operations, or utility grid anomalies. By installing high-quality surge protection device manufacturers’ products, facility managers and system integrators can ensure equipment uptime, extend the lifespan of sensitive electronics, and [...]

What Is a Surge Protection Device (SPD)? A surge protector—also known as a surge protection device (SPD)—is designed to safeguard low-voltage electrical systems against damaging voltage spikes caused by lightning strikes or switching operations. By diverting and absorbing transient overvoltages, SPDs prevent equipment failures, downtime, and safety hazards. Common types include Class I (T1) SPD, Class [...]

In today’s rapidly evolving electrical and renewable energy landscapes, selecting the right surge protective devices (SPDs) is crucial for safeguarding sensitive equipment from overvoltage events. As a professional manufacturer of low-voltage surge protection solutions, Prosurge Electronics Co., Ltd. adheres strictly to the international standards IEC/EN 61643 and IEC/EN 62305, ensuring optimal performance and compliance for every [...]

Ensuring robust electrical surge protection is critical for safeguarding sensitive equipment, preventing costly downtime, and enhancing power quality. The UL 1449 standard is the definitive benchmark for surge protective devices (SPDs) in North America, categorizing them into distinct types based on installation location and capabilities. Understanding the differences between Type 1 SPDs, Type 2 SPDs, Type 3 SPDs, and component assemblies is [...]

When selecting between parallel or series connection methods for surge protectors (SPDs), the decision should be based on specific application scenarios and requirements. Both parallel and series connections are common configurations, each offering distinct advantages and suitable applications. Parallel Connection In a parallel configuration, multiple SPDs are connected simultaneously to the power lines of the protected [...]