Shu Guang
Shu Guang
Engineered for reliability, our back-up fuses meet stringent international standards for various industrial applications.
Located in Yueqing, Zhejiang Province—widely recognized as the "Electrical Capital of China"—Wenzhou Shuguang Fuse Co., Ltd. is a premier power technology enterprise. We specialize in the integrated research, development, production, and distribution of high-performance fuse systems.
Our journey began in 1992 as the "Yueqing Shuguang Fuse Factory." Over the past three decades, we have evolved into a technological powerhouse, driven by a commitment to quality and innovation. Our "Shu Rong" brand has become synonymous with reliability in the global power sector.
Understanding the global shifts in medium and high voltage protection technology.
The global Back-Up fuse market is experiencing a significant surge, driven by the modernization of aging electrical grids in North America and Europe, alongside rapid urbanization in the Asia-Pacific region. As industries transition to smarter grids, the demand for fuses with higher breaking capacities and more precise time-current characteristics has never been higher.
Current trends indicate a shift towards smart fuse technology and environmentally friendly materials. There is a growing focus on "Partial Range" or "Back-Up" fuses that work in tandem with other protective devices to clear high-level faults while allowing low-level faults to be handled by secondary equipment, thus extending the lifespan of expensive transformers.
The rise of solar and wind farms has introduced new challenges for current-limiting fuses. Back-Up fuses are now being optimized for DC circuits and high-frequency fluctuations common in renewable energy inverters, making them critical components in the global green energy transition.
Compliance with global standards is the cornerstone of our reliability.
At Shuguang, we don't just manufacture; we engineer safety. Our products undergo rigorous testing at the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center and the Xi'an High-voltage Electrical Apparatus Research Institute. Every Back-Up fuse is designed to operate seamlessly under extreme conditions.
Our IS09001:2000 quality assurance system ensures that every batch maintains the same level of excellence that has earned us a high reputation among domestic and international power companies.
Combining cost-efficiency with world-class engineering.
We provide OEM/ODM services, customizing fuse lengths, diameters (55mm, 88mm, etc.), and current ratings (up to 63A and beyond) to fit specific local grid requirements.
Our products are already exported to Southeast Asia, the Middle East, Africa, and Europe. We understand international shipping and compliance documentation.
We continuously invest in high-power test stations and sophisticated testing equipment to ensure our back-up fuses handle short-circuit currents with precision.
Eliminate middlemen. By sourcing directly from the manufacturer in Yueqing, you gain a competitive edge in pricing without compromising on quality.
Our back-up fuses are versatile, protecting critical infrastructure across diverse sectors.
Ideal for oil-immersed transformers, providing reliable back-up protection against internal faults.
Specialized fuses for power capacitor banks to prevent rupture during cell failures.
Seamlessly integrated into medium voltage switchgear for urban distribution networks.
Heavy-duty protection for motors and voltage transformers in large-scale manufacturing facilities.
Professional Insight: Back-up fuses are essential because they are designed to interrupt currents from a specific minimum breaking current (I3) up to the rated maximum breaking current. This makes them the perfect partner for other switching devices in complex industrial grids where equipment safety and uptime are non-negotiable.
A complete ecosystem of high-voltage components for comprehensive grid safety.
Contact Wenzhou Shuguang Fuse Co., Ltd. today for technical specifications and a custom quote tailored to your regional requirements.
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