Shu Guang
Shu Guang
High-quality big fuses and electrical components for industrial safety
Wenzhou Shuguang Fuse Co., Ltd.
Wenzhou Shuguang Fuse Co., Ltd. is located in Yueqing, Zhejiang Province, the electrical capital of China. It is a power technology enterprise integrating research, development, production, sales and service. The predecessor of Wenzhou Shuguang Fuse Co., Ltd. was "Yueqing Shuguang Fuse Factory" established in 1992.
With over three decades of deep cultivation in the circuit protection industry, we have evolved from a local workshop to a globally recognized China CE Certification Big Fuses Supplier. Our commitment to excellence has allowed us to serve critical power infrastructure projects worldwide, ensuring stability and safety in high-voltage environments.
Understanding the vital role of Big Fuses in modern power grids
As nations worldwide upgrade their aging power grids to accommodate smart technologies, the demand for big fuses with high breaking capacities has reached an all-time high. These components are essential for protecting expensive transformers and switchgear from catastrophic fault currents.
The global shift toward solar and wind energy requires specialized CE Certification fuses capable of handling the unique DC and variable AC loads of inverter systems. Our products are increasingly used in utility-scale photovoltaic plants across Europe and North America.
Heavy industries, including mining, smelting, and automated manufacturing, require robust electrical protection. As a leading supplier of big fuses, we provide the heavy-duty components necessary to prevent downtime in critical industrial processes.
Adhering to the world's most stringent technical standards
Wenzhou Shuguang Fuse Co., Ltd. is designated by the Ministry of Electric Power Industry to produce high-voltage fuses, high-voltage current-limiting fuses, and zinc oxide arresters. The highest technical performance meets ANSIC37.42, DIN43625, BS2692, IEC282-2-1995, IEC60644, IEC60470, IEC60282-1, IEC269-2 and national GB standards. Our company has passed ISO9001:2000 quality system certification.
Leading the future of power system protection
Modern "Big Fuses" are now being integrated with monitoring sensors that can transmit real-time data regarding the health of the fuse and the surrounding circuit, aligning with the "Industry 4.0" movement in electrical engineering.
There is a growing trend to pack higher breaking capacities into smaller fuse bodies. Our R&D team focuses on utilizing advanced ceramic materials and pure silver elements to achieve superior performance in compact DIN and American standard sizes.
The industry is moving away from hazardous materials. As a responsible China CE Certification Big Fuses Supplier, we ensure our production processes comply with global environmental directives, reducing the carbon footprint of power distribution.
Connecting power across continents with reliable solutions
The products are exported to various provincial power companies in China. A complete sales network has been formed throughout the country. New high-voltage fuses and high-voltage current-limiting fuse products are exported to Southeast Asia, the Middle East, Africa, Europe and other countries and regions, and the domestic product sales rank among the top in the same industry.
Tailored solutions for international buyers and local engineers
International procurement agents look for three things: Certification compliance, Lead-time stability, and Technical support. We provide comprehensive data sheets and type-test reports to streamline the approval process for large-scale tenders.
Whether it's protecting a suburban transformer in Brazil or a high-rise distribution panel in Dubai, our fuses are designed for high-temperature stability and seismic resilience, meeting the environmental challenges of diverse geographic locations.
Understanding that every project has unique specs, we offer customization for special voltage levels or mounting configurations, ensuring our big fuses fit perfectly into existing infrastructure.
In recent years, the company has developed rapidly, and its economic and social benefits have improved significantly. While vigorously developing new products, it has always attached importance to the process flow. High-quality raw materials and sophisticated testing equipment are the backing of the quality assurance system.
All performance indicators are in line with the corresponding technical conditions, and new products can be customized and produced at any time according to user needs. "Shu Rong" brand products have enjoyed a high reputation among domestic and foreign users.
Versatile protection for diverse electrical environments
Our fuses are critical components in substations, power capacitors, voltage transformer protection units, and oil-immersed transformers. By preventing overcurrent damage, we ensure the longevity of high-value electrical assets across the global grid.
Unmatched efficiency and technical expertise in Yueqing
Located in the "Electrical Capital," we have immediate access to high-purity copper, specialized ceramics, and advanced sand-filling technologies, allowing us to maintain competitive pricing without compromising quality.
Unlike trading companies, our factory status allows us to monitor every stage of production—from silver element stamping to final dielectric testing, ensuring every big fuse meets CE standards.
Whether you need a small batch for a niche project or thousands of fuses for a national grid expansion, our production lines are flexible enough to meet your deadlines with precision.
Browse our full range of CE-certified protection devices
