Shu Guang
Shu Guang
Wenzhou Shuguang Fuse Co., Ltd. is strategically located in Yueqing, Zhejiang Province—widely recognized as the Electrical Capital of China. We are a pioneering power technology enterprise that seamlessly integrates R&D, production, sales, and global service. Our roots date back to the "Yueqing Shuguang Fuse Factory" established in 1992, giving us over three decades of specialized experience in high-power and high-voltage fuse technology.
As a designated manufacturer for the Ministry of Electric Power Industry, we have dedicated ourselves to the advancement of high-voltage current-limiting fuses and specialized protection devices for power capacitors and transformers. Our "Shu Rong" brand has become a hallmark of reliability for grid operators worldwide.
The global demand for High Power Fuses is currently experiencing an unprecedented surge, driven by the massive shift toward renewable energy integration and the modernization of aging electrical grids. In 2024 and beyond, the industry is witnessing a transition toward "Smart Grid Compatible" protection devices. As a leading manufacturer, we are at the forefront of this evolution, ensuring that our products meet the rigorous demands of industrial automation, electric vehicle (EV) charging infrastructure, and large-scale solar and wind farms.
With the rise of Industry 4.0, manufacturing plants require ultra-reliable current-limiting fuses to protect sensitive robotic equipment and heavy-duty machinery from catastrophic electrical faults.
High-power fuses are critical components in DC combiner boxes and AC inverters within solar parks and wind turbine nacelles, where high voltage and extreme environmental conditions are the norm.
International buyers are increasingly seeking suppliers who can offer dual certification (IEC and ANSI standards) alongside rapid customization capabilities to fit localized substation designs in Europe, America, and the Middle East.
Our commitment to quality is backed by rigorous testing and international standards. Shuguang products are tested at the Xi'an High-voltage Electrical Apparatus Research Institute and the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center.
Our technical performance meets and often exceeds global benchmarks including: ANSI C37.42, DIN 43625, BS 2692, IEC 60282-1, IEC 60644, and IEC 60470. This ensures that whether you are operating in a European grid following VDE standards or an American utility following ANSI, our fuses provide seamless protection.
We are ISO9001:2000 certified, maintaining a strict quality assurance system that oversees everything from raw material procurement (high-purity silver for fuse elements) to the final high-power discharge test before shipping.
Being based in Yueqing, we have immediate access to the world's most concentrated electrical supply chain. This reduces lead times and allows us to source the highest grade ceramic, copper, and epoxy components at competitive costs.
Unlike massive conglomerates with rigid production lines, our factory is designed for flexibility. We can customize dimensions (like 82mm to 92mm J-slotted variants) and current ratings to match legacy systems or innovative new project requirements.
Our high production volume allows us to offer premium protection technology at a fraction of the cost of Western competitors, without compromising on safety or compliance certifications.
Substation Protection
Renewable Energy Farms
Heavy Industrial Plants
Urban Grid Distribution
In recent years, Shuguang has rapidly expanded its footprint in the Renewable Energy sector. Our high-voltage current-limiting fuses are now widely used in oil-immersed transformer back-up protection and high-power capacitor banks. By focusing on the synergy of high-quality raw materials and sophisticated testing equipment, we ensure that every "Shu Rong" brand fuse delivered is capable of withstanding the harsh transients common in modern power electronics.
