Shu Guang
Established in 1992 as "Yueqing Shuguang Fuse Factory," our company has evolved into a powerhouse of innovation in the electrical industry. Located in Yueqing, Zhejiang Province—widely recognized as the Electrical Capital of China—Wenzhou Shuguang Fuse Co., Ltd. is a comprehensive power technology enterprise. We integrate advanced research, development, production, and professional service to meet the rigorous demands of modern electrical infrastructure.
For over three decades, we have remained committed to providing high-performance China OEM Transformer Fuses. Our expertise isn't just in manufacturing; it's in the deep understanding of power circuit protection, ensuring safety and reliability for provincial power companies and international industrial partners alike.
In the global commercial landscape, power outages represent billions of dollars in lost productivity. OEM Transformer Fuses act as the frontline defense against transformer failure, preventing expensive equipment damage and ensuring business continuity in manufacturing hubs and commercial districts.
Heavy industries such as mining, steel production, and petrochemical plants rely on ultra-stable voltage. Our high-voltage current-limiting fuses are engineered to handle the harsh transients of industrial power systems, providing the reliability required by heavy-duty electrical loads.
As the world shifts toward "Smart Grids," the demand for precise, fast-acting fuses has spiked. Our products integrate seamlessly with modern switchgear, providing the necessary protection for the next generation of energy distribution infrastructure.
Global urbanization requires compact and efficient power substations. Our Miniature Fuse Links and Bay-O-Net designs allow for smaller transformer footprints without sacrificing protection capacity, a critical factor for city planners and utility providers.
The global transformer fuse market is witnessing a significant paradigm shift. With the rise of Renewable Energy Integration, transformers are now subjected to more variable loads from solar farms and wind turbines. This necessitates fuses that can withstand frequent cycling and varied thermal profiles. Wenzhou Shuguang Fuse is at the forefront of this trend, developing EV-specific fuses and high-performance current-limiting devices that cater to the green energy revolution.
Another major trend is the move toward Localization and Customization. Procurement officers no longer seek "one-size-fits-all" components. They require OEM solutions that adhere to specific regional standards like ANSI (North America), DIN (Europe), or BS (Commonwealth). As a premier China Transformer Fuses Factory, we provide bespoke manufacturing services that align with these diverse technical conditions.
Global enterprises sourcing from China prioritize three things: Reliability, Cost-Efficiency, and Standard Compliance. We meet these needs through:
Building Global Connections through Quality
Our products are exported to various provincial power companies across China, forming a robust domestic sales network that ranks at the top of the industry.
We have successfully penetrated markets in Southeast Asia, the Middle East, Africa, and Europe, establishing long-term business contacts with global utility providers.
Development by science and technology. We continuously update our process flow and utilize high-quality raw materials as the backing of our quality assurance system.
Protection specifically designed for back-up scenarios in oil-filled units, ensuring zero leakage and high-thermal stability.
Critical protection for power factor correction units, preventing cascading failures in capacitor banks.
Integrated current-limiting fuses for medium voltage switchgear, protecting vital urban infrastructure.
Miniature protection devices for measurement and instrumentation transformers, maintaining grid monitoring accuracy.
Our quality assurance is validated by the most stringent national and international bodies.





As a leading China OEM Transformer Fuses Manufacturer, our "Shu Rong" brand has built a high reputation for technical performance that meets the highest global standards. We don't just provide products; we provide engineered solutions. Whether you need Drop-out Fuses for rural electrification or HRC Current Limiting Fuses for high-density urban grids, our factory is equipped with the latest testing stations from the Electric Power Research Institute.
Our manufacturing philosophy revolves around "Survival by Quality." This means every 10KV 0.63A miniature fuse or 63A oil fuse-link undergoes rigorous performance tests before it leaves our Yueqing facility. Our ability to customize new products according to user needs—at any time—makes us a preferred partner for global engineering firms looking for agile and professional manufacturing.