Shu Guang
Shu Guang
Engineered for extreme reliability, exceptional breaking capacity, and compliance with strict international electrical standards.
Wenzhou Shuguang Fuse Co., Ltd. is located in Yueqing, Zhejiang Province, the world-renowned electrical capital of China. As a premier power technology enterprise, we seamlessly integrate advanced research, engineering, production, distribution, and end-to-end technical service. The foundation of our company traces back to the "Yueqing Shuguang Fuse Factory" established in 1992. Over the last three decades, we have evolved from a local pioneering workshop into an industrial powerhouse setting high standards for electrical protection.
Under our signature brand name "Shu Rong", we manufacture high-precision, heavy-duty electrical components that protect transmission infrastructure, renewable generation sites, commercial installations, and industrial networks globally. We combine deep domain expertise with cutting-edge metallurgy and insulation sciences, positioning ourselves as the absolute partner of choice for engineers demanding uncompromised circuit safety.
In an era defined by grid modernization and massive electrification, high-voltage power fuses must do more than simply melt under overload. They must deliver precise transient response, limit let-through energy, and coordinate perfectly with digital grid protection systems.
Our commitment to future-proof engineering involves three major pillars: material innovation, digitalization, and environmental compliance. Over the next decade, Wenzhou Shuguang Fuse Co., Ltd. is investing heavily in the development of Smart Fuses equipped with integrated wireless micro-sensors. These sensors monitor temperature rises and leakage currents in real-time, sending data to central SCADA systems before an actual fault occurs.
On the metallurgy front, we are experimenting with modified silver-copper alloys that demonstrate higher resistance to cyclical fatigue caused by variable wind and solar generation loads. Additionally, we are eliminating heavy metals and adopting eco-friendly, high-grade ceramic bodies that are 100% recyclable, positioning our products at the forefront of the global circular economy.
Operating from Yueqing, the electrical capital of China, grants us unparalleled access to a highly integrated, localized supply chain. Wenzhou Shuguang Fuse Co., Ltd. has systematically upgraded its facilities to align with Industry 4.0 paradigms. By employing automated quartz-sand filling machinery with vibrating compactors, we ensure consistent density inside every fuse chamber. This eliminates air pockets that cause unstable arc quenching.
Our automated welding systems utilize computerized optical vision inspections to verify that fuse element profiles are within micrometer tolerances. This technological rigor ensures that our time-current characteristic curves remain highly consistent across production batches. Furthermore, our raw material sourcing strategy involves multiple layers of redundancy for high-purity silver ribbon and specialized porcelain, ensuring that global supply chain shocks do not compromise our lead times or delivery schedules.
Our products are designated by the Ministry of Electric Power Industry of China for the production of premium high-voltage fuses across various voltage ranges. Our equipment undergoes rigorous type-testing and compliance verification at leading independent testing organizations.
All performance tests are fully qualified by top-tier institutions, including the High-Power Test Station of the Electric Power Research Institute of the Ministry of Electric Power, the National High-Voltage Electrical Apparatus Quality Supervision and Inspection Center, the Xi'an High-Voltage Electrical Apparatus Research Institute, and the High-Voltage Electrical Apparatus Laboratory.
The highest technical performance of our products meets and exceeds an array of international standards: ANSI C37.42, DIN 43625, BS 2692, IEC 282-2-1995, IEC 60644, IEC 60470, IEC 60282-1, IEC 269-2, GB 15166.1, GB 15166.2, GB 15166.5, GB 13593, DL/T 640-1997, and VDE 0636. Furthermore, our entire manufacturing flow operates under a comprehensive quality assurance framework certified to ISO 9001: 2000.
Our "Shu Rong" brand products have built an outstanding reputation in grid substations, heavy industrial plants, wind generation towers, and localized power distribution networks across the globe.
Our sales network reaches every major power grid operator and distributor across China's domestic market. Beyond China, we have established robust commercial pipelines in Southeast Asia, the Middle East, Africa, Europe, and Latin America, making Wenzhou Shuguang Fuse Co., Ltd. one of the leading exporters of high-voltage current-limiting fuses and power system protection technologies.
Procuring medium and high-voltage fuses for massive infrastructure requires rigorous compliance alignment. EPC contractors and utility procurement officers must deal with complex local electrical grid configurations, varying ambient operational conditions, and diverse standards systems (such as DIN vs. BS vs. ANSI). We recognize these challenges and provide complete documentation including detailed time-current curves (I-t curves), peak let-through current graphs, and thermal characteristics (I²t pre-arcing and total clearing values).
We work directly with engineering teams to customize physical housing dimensions, mounting arrangements, and terminal connections. Whether you need specialized oil-tight fuse links for transformer oil vessels, custom tail-wire recovery capacitor fuses, or high-vibration resistant fuses for rolling stock, our R&D center can quickly design, simulate, prototype, and test custom fuse solutions tailored to your unique requirements.
Our global clients benefit from our comprehensive regulatory assurance. We maintain full traceability of our silver element purity, ceramic mechanical strength, and sand grain size distributions. We facilitate smooth custom clearance processes and logistics coordination, delivering completely compliant products directly to your worksites or distribution centers with robust, seawater-resistant packing.
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