Shu Guang
Shu Guang
As the global community shifts toward Smart Grid technology and decentralized energy sources, the demand for CustomPowerFuse solutions has reached an all-time high. Modern power systems face unprecedented challenges: fluctuating loads from renewable sources like solar and wind, the rapid expansion of EV charging infrastructure, and the aging of urban electrical grids. Wenzhou Shuguang Fuse Co., Ltd. stands at the intersection of these challenges, providing essential high-voltage current-limiting fuses and transformer protection devices that act as the ultimate safeguard for multi-billion dollar infrastructure.
Our macroscopic approach involves not just manufacturing a component, but engineering a safety ecosystem. We analyze short-circuit currents, transient overvoltages, and environmental stressors to ensure that every fuse supplied to Southeast Asia, the Middle East, and Europe meets the specific dielectric requirements of the local region. By integrating advanced metallurgical techniques in our silver-plated fuse elements and high-purity silica sand filling, we offer "Information Gain" to engineers—providing data-backed reliability that exceeds standard IEC 60282 requirements.
Optimized HRC fuses designed for the specific harmonic profiles of solar inverters and wind turbine converters, ensuring long-term stability.
Compact designs for metropolitan substations where space is a premium, providing high breaking capacity in a reduced footprint.
Heavy-duty protection for large-scale industrial motors and capacitors, preventing catastrophic failure and minimizing downtime.
Located in Yueqing, Zhejiang Province—the Electrical Capital of China—Wenzhou Shuguang Fuse Co., Ltd. is a power technology enterprise integrating research, development, production, sales, and service. The predecessor, Yueqing Shuguang Fuse Factory, was established in 1992.
For over three decades, we have pioneered the development of high-voltage circuit protection. Our trajectory from a local factory to a global wholesale powerhouse is built on a foundation of rigorous engineering and a deep understanding of the search for "zero-defect" manufacturing. We are designated by the Ministry of Electric Power Industry to produce high-voltage current-limiting fuses, zinc oxide arresters, and high-voltage insulators.
Contact Engineering TeamYears of Industry Experience
Countries Exported To
Test Qualification Rate
ISO Certified Quality System
In the current global industrial landscape, CustomPowerFuse manufacturers must navigate a complex web of regional standards. Wenzhou Shuguang provides comprehensive localization support, ensuring compliance with DIN43625 (Germany), BS2692 (UK), and ANSI C37.42 (USA). Our products are not "one size fits all." For instance, our Medium Voltage fuses for the Middle East are engineered to withstand extreme ambient temperatures exceeding 50°C, while our European installations focus on strict adherence to IEC 60282-1 standards for environmental safety.
We provide full technical documentation and 24/7 engineering support to help local contractors in Southeast Asia and Africa integrate our systems into their regional grids seamlessly.
Our company's products have passed rigorous evaluations at the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center and the Xi'an High-voltage Electrical Apparatus Research Institute.
Our R&D team is currently focused on the "Smart Fuse" initiative—integrating IoT sensors within the fuse housing to provide real-time thermal and electrical health monitoring. This will allow utility providers to transition from reactive maintenance to predictive maintenance, identifying potential grid failures before they occur.
Furthermore, we are optimizing our manufacturing processes to reduce the carbon footprint of our ceramic housings and high-purity sand extraction, aligning with global ESG (Environmental, Social, and Governance) goals. The future of power fuses lies in the marriage of traditional reliability with digital intelligence.
High Rupturing Capacity (HRC) fuses are designed to interrupt high fault currents by using high-purity quartz sand to quench the arc rapidly. This limits the peak current allowed through the circuit, protecting sensitive downstream equipment from thermal and mechanical stress.
Every batch undergoes strict performance testing in our ISO 9001 certified facility. We provide full traceability and test reports that comply with IEC 60282-1 and DIN 43625 standards, ensuring that what you order matches the technical requirements of your local grid.
Yes. As a primary manufacturer based in Wenzhou, we specialize in custom R&D. We can adjust the melt element geometry and housing length to meet specific 3.6kV to 40.5kV requirements for specialized industrial machinery or transformer configurations.
Polymer insulators offer superior hydrophobic properties, higher resistance to pollution and tracking, and are significantly lighter, reducing shipping costs and installation time for international projects.
