Shu Guang
Shu Guang
High-performance high-voltage components meeting international IEC and ANSI standards.
The global power distribution landscape is undergoing a massive transformation. As urbanization accelerates across Southeast Asia, Africa, and Latin America, the demand for stable medium-voltage (MV) protection has reached an all-time high. Dropout Fuses (DOFs), also known as fuse cutouts, remain the cornerstone of outdoor protection for overhead distribution systems and power transformers.
In mature markets like Europe and North America, the focus has shifted toward grid modernization. This involves replacing aging porcelain infrastructure with Polymeric/Composite Dropout Fuses that offer superior hydrophobic properties and resistance to pollution. As a premier China OEM manufacturer, we provide the technical agility required to bridge the gap between traditional reliability and modern smart-grid requirements.
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.
In recent years, the company has developed rapidly, and its economic and social benefits have improved significantly. We continue to deepen and improve the quality management system. High-quality raw materials and sophisticated testing equipment are the backing of our quality assurance system. Our "Shu Rong" brand products have enjoyed a high reputation among domestic and foreign users.
With the rise of solar and wind farms, dropout fuses are now engineered to handle the unique harmonic distortions and cycling loads of renewable energy plants. Our EV fuse solutions specifically cater to the burgeoning electric vehicle charging infrastructure.
From the humid, salt-heavy coastal regions of Southeast Asia to the arid, high-dust environments of the Middle East, our OEM dropout fuses use high-grade silicone rubber and galvanized steel to prevent tracking and corrosion.
The industry is moving toward "communicating cutouts." While we maintain the core mechanical reliability of the dropout mechanism, we are integrating materials that allow for future sensing technologies to be mounted on our fuse carriers.
As an authoritative manufacturer designated by the Ministry of Electric Power Industry, we produce high-voltage fuses for various voltage levels. Our products have passed rigorous testing at the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center and the Xi'an High-voltage Electrical Apparatus Research Institute.
Leveraging the industrial synergy of Yueqing to deliver unmatched value.
Being in the "Electrical Capital," we source the highest grade copper, silver sand, and insulators locally, ensuring cost-efficiency without compromising on raw material quality.
We don't just sell off-the-shelf. We provide tailored OEM services, allowing global buyers to specify current ratings (0.63A to 200A+), insulation materials (Ceramic/Polymer), and branding requirements.
Every "Shu Rong" fuse undergoes strict routine tests. Our facility includes high-power test stations to simulate short-circuit conditions, ensuring 100% reliability in the field.
When global procurement teams look for China OEM Dropout Fuse manufacturers, they are looking for three things: reliability, scalability, and technical compliance. At Wenzhou Shuguang Fuse, we have spent three decades perfecting these pillars.
A dropout fuse is the last line of defense for a distribution transformer. If the fuse fails to "drop out" during a fault, the transformer—costing thousands of dollars—can be destroyed. Our designs focus on the precision of the trunnion and hinge mechanism, ensuring that once the fuse element melts, the gravity-driven dropout action is instantaneous and friction-free.
Experience matters in high-voltage engineering. Our history dating back to 1992 provides us with a massive database of performance metrics across different climates. We ensure our products meet the IEC 60282-2 for expulsion fuses and ANSI C37.42 for distribution cutouts. This level of expertise is what allows us to serve national grid companies across Southeast Asia, the Middle East, Africa, and Europe.
The "Yueqing Shuguang" legacy is built within the world's most concentrated electrical ecosystem. This allows us to rapidly prototype new designs. If a client in South America requires a specific mounting bracket or a unique creepage distance for high-altitude installation, our R&D team can iterate and test the design within weeks, not months.
