Shu Guang
Wenzhou Shuguang Fuse Co., Ltd. is strategically located in Yueqing, Zhejiang Provinceβwidely recognized as the "Electrical Capital of China." We are a powerhouse in the electrical technology sector, seamlessly integrating R&D, production, sales, and professional service. Our journey began in 1992 as the "Yueqing Shuguang Fuse Factory," and over the decades, we have evolved into a sophisticated enterprise serving the global power grid.
Our commitment to excellence is rooted in thirty years of experience. We specialize in the development of OEM Din Fuses, high-voltage current-limiting components, and advanced insulation technology. As a pioneer in the industry, we don't just manufacture products; we provide reliability for critical infrastructure.
The global demand for DIN standard fuses has seen a significant surge as nations modernize their aging electrical grids and transition toward sustainable energy sources. In the current industrial climate, DIN fuses are no longer just basic protection devices; they are critical components in the stability of Smart Grids, Industrial Automation, and Electric Vehicle (EV) Infrastructure.
One of the most prominent trends is the move toward miniaturization with higher breaking capacities. Modern power systems operate at higher densities, requiring fuses that can handle immense short-circuit currents while occupying minimal space. Furthermore, the integration of renewable energy (Solar PV and Wind) has created a niche for specialized fuses that can withstand cyclical loads and DC voltages common in inverter-based systems.
Global procurement managers are increasingly looking for "Total Solution" partners. Reliability, speed of delivery, and compliance with international standards (IEC, DIN, VDE) are the three pillars of modern sourcing. As a China OEM Din Fuses Manufacturer, we meet these needs by offering scalable production capacities that can cater to both large-scale utility tenders and specialized industrial orders.
Understanding the local context is vital. In Europe, the strict adherence to DIN 43625 standards is non-negotiable for distribution transformers. In Southeast Asia and Africa, where environmental conditions can be harsh, there is a high demand for Polymeric Insulated and high-durability drop-out fuses that can withstand high humidity and temperature fluctuations. Our factory specializes in customizing the mechanical and electrical characteristics of our fuses to suit these specific regional climates.
Our products are designated by the Ministry of Electric Power Industry to produce high-voltage fuses across various voltage levels. We utilize high-quality raw materials and sophisticated testing equipment to ensure that every unit leaving our facility is a masterpiece of safety.





As a leading China OEM Din Fuses Manufacturer, we have access to a complete industrial supply chain. This allows us to source high-purity silver for fuse elements and aerospace-grade ceramics for bodies at competitive prices, ensuring premium quality without the premium price tag.
Our facility in Yueqing is equipped with state-of-the-art laboratories. We can prototype and test new designs within weeks, not months. Whether you need a specific current rating or a unique physical dimension for a specialized transformer, our engineering team can deliver.
Located near major ports like Ningbo and Shanghai, we offer unparalleled logistics advantages. We provide efficient shipping to Southeast Asia, the Middle East, Africa, and Europe, ensuring your project timelines are met with precision.
Our "Shu Rong" brand fuses are utilized in diverse and demanding environments across the globe.




From protecting voltage transformers in municipal grids to safeguarding power capacitors in heavy industrial plants, our fuses are designed to act as the last line of defense. In the burgeoning EV sector, our High-Voltage HRC fuses are becoming the standard for charging station protection, where high DC voltage and rapid response times are mandatory.
High-voltage current-limiting fuses are a cornerstone of modern power distribution. Their primary function is to protect electrical equipment from the thermal and dynamic effects of short-circuit currents. As an experienced China OEM Din Fuses Manufacturer, we understand the physics of quenching an arc within milliseconds. Our fuses utilize high-purity quartz sand as an arc-extinguishing medium, precisely graded to ensure optimal heat dissipation and pressure management during a fault.
In the context of the European market, the "DIN standard" is synonymous with interoperability. Our fuses are engineered to fit perfectly into standardized fuse-bases and switchgear, ensuring that maintenance crews can perform replacements without technical friction. This adherence to universal design is what has allowed us to rank among the top exporters in the industry.
The company adheres to the principle of "Development by science and technology, and survival by quality." We have continuously deepened our quality management systems. In recent years, our investment in Sophisticated Testing Equipment has allowed us to simulate extreme fault conditions, ensuring that our "Shu Rong" brand products maintain their high reputation among domestic and foreign users. We are not just making fuses; we are engineering safety for the next generation of power systems.