Shu Guang
Shu Guang
The global electrical landscape is undergoing a radical transformation. As the world shifts toward decarbonization and electrification, the demand for China High-Quality High Power Fuses Factories has surged to unprecedented levels. High-power fuses are no longer just simple safety components; they are the critical "guardians" of multi-million dollar investments in renewable energy grids, electric vehicle (EV) charging infrastructures, and smart industrial automation systems.
Currently, the industrial and commercial sectors account for the largest share of the fuse market. With the rise of megawatt-scale solar farms and offshore wind energy, protection devices must handle higher voltages and DC currents with extreme precision. The global supply chain now prioritizes reliability and rapid response times, making the expertise found in China's "Electrical Capital" more vital than ever.
Wind and solar power plants require specialized fuses that can withstand fluctuating loads and high DC voltages, ensuring long-term stability in harsh environments.
Electric vehicle battery packs and fast-charging stations demand ultra-fast acting fuses to protect sensitive lithium-ion cells and power electronics.
Modern urbanization relies on robust medium and high-voltage distribution networks where current-limiting fuses prevent catastrophic transformer failures.
Wenzhou Shuguang Fuse Co., Ltd. is located in Yueqing, Zhejiang Province, the electrical capital of China. We are 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 specialized experience, we have evolved from a local workshop into a leading China High-Quality High Power Fuses Factory. Our journey is defined by a relentless pursuit of engineering excellence and a commitment to safety that protects power systems across the globe.
As equipment gets smaller, fuses must provide the same breaking capacity in a more compact footprint, utilizing advanced ceramic materials and silver-element geometries.
Modern systems require fuses that can safely interrupt short-circuit currents up to 63kA or higher, meeting stringent IEC 60282-1 standards.
With the growth of PV systems, DC fuses are being re-engineered to eliminate arc-extinguishing challenges inherent in direct current circuits.
Integration of status indicators and micro-switches for remote monitoring in "Industry 4.0" automation setups is becoming a standard procurement requirement.
Our factory is designated by the Ministry of Electric Power Industry to produce high-voltage fuses of various voltage levels, high-voltage current-limiting fuses, high-voltage fuses for power capacitors, voltage transformer protection fuses, zinc oxide arresters, drop-out fuses, high-voltage insulators, etc. The products have passed the high-power test station of the Electric Power Research Institute, the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center, and the Xi'an High-voltage Electrical Apparatus Research Institute.
IEC Standard Cert
Quality Management
Testing Report
Technical Approval
Our high-power fuses find critical applications in diverse localized environments. In Southeast Asia, they protect rural electrification projects from heavy tropical surges. In Europe, they are integrated into sophisticated DIN-standard distribution blocks. In the Middle East, they offer thermal stability for oil and gas electrical infrastructure.
Transformer Protection
Substation Switchgear
Industrial Motor Control
Capacitor Banks
Based in Yueqing, we have immediate access to the world's most complete electrical component ecosystem, reducing lead times and costs significantly.
While vigorously developing new products, we have always attached importance to the process flow. New products can be customized and produced at any time according to user needs.
We use high-purity silver for fuse elements and high-strength alumina ceramics, combined with sophisticated testing equipment, ensuring every unit is a benchmark of quality.
Products are exported to Southeast Asia, the Middle East, Africa, Europe and other countries and regions, ranking among the top in the industry.
In recent years, our company has developed rapidly, and its economic and social benefits have improved significantly. The company continues to deepen and improve the quality management system. "Shu Rong" brand products have enjoyed a high reputation among domestic and foreign users.
Our R&D focus lies in the precision of the current-limiting curve. By optimizing the fuse element's notch geometry, we achieve lower let-through energy (IĀ²t), which is crucial for protecting modern power semiconductors and expensive transformers. Our zinc oxide arresters and drop-out fuses are built to survive extreme weather, providing a complete protection ecosystem for global utility companies.
