Shu Guang
The 63.5*254mm oil-tight fuse link represents a critical standard in the medium voltage (MV) electrical protection industry. These specific dimensions are synonymous with reliability in oil-immersed transformer protection across global power grids. From the bustling industrial hubs in Southeast Asia to the modernized utility networks in Europe, the 63.5*254mm fuse is the "gold standard" for ensuring equipment safety against overcurrent and short-circuit faults.
In the current industrial landscape, the demand for these fuses is driven by the rapid expansion of urban infrastructure and the necessity to upgrade aging transformer stations. As a core component, these fuses are designed to operate submerged in transformer oil, requiring specialized sealing technology and high-purity materials to prevent contamination and ensure arc-quenching performance.
Located in Yueqing, Zhejiang Provinceβthe renowned "Electrical Capital of China"βWenzhou Shuguang Fuse Co., Ltd. stands as a beacon of excellence in power technology. Established in 1992 as the "Yueqing Shuguang Fuse Factory," we have evolved into a comprehensive enterprise integrating R&D, production, sales, and service.
Under our prestigious "Shu Rong" brand, we have built a reputation for high-voltage protection components that are trusted by national power companies and international distributors alike. Our commitment to science and technology ensures that every 63.5*254 fuse leaving our factory meets the most stringent global standards.
Our products are designated by the Ministry of Electric Power Industry for the production of high-voltage current-limiting fuses and related protection apparatus. We pride ourselves on meeting and exceeding international technical benchmarks.
Authority Note: All performance tests have been qualified by the Electric Power Research Institute of the Ministry of Electric Power, the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center, and the Xi'an High-voltage Electrical Apparatus Research Institute.
International procurement managers prioritize reliability, compliance, and cost-efficiency. As a primary China 63.5*254 fuse supplier, we address these needs by providing:




Our products are exported to various provincial power companies in China and a complete sales network has been formed throughout the country. Internationally, our reach spans Southeast Asia, the Middle East, Africa, and Europe, ranking us at the forefront of the high-voltage fuse industry.
We source only the highest-grade silver elements and high-purity quartz sand to ensure optimal current-limiting performance and minimal heat dissipation.
Equipped with high-power test stations, we verify breaking capacity, temperature rise, and mechanical strength for every production run.
While the 63.5*254mm is standard, our engineering team can customize performance indicators to meet specific utility requirements or unique transformer designs.
In the realm of electrical engineering, the medium voltage oil-immersed fuse link (commonly 63.5mm in diameter and 254mm in length) is more than just a component; it is the final safeguard for multi-million dollar power infrastructure. At Wenzhou Shuguang Fuse Co., Ltd., we understand that a single failure in this component can lead to catastrophic transformer damage or prolonged grid downtime.
Our 254mm series is designed to handle voltages up to 36kV, providing high rupturing capacity (HRC) protection. These fuses are characterized by their ability to extinguish arcs within the oil chamber rapidly. The oil-tight sealing is achieved through a combination of precision-engineered end-caps and high-temperature resistant gaskets, a technology we have perfected over three decades.
As industry experts, we observe that the reliability of these fuses is paramount. In countries like Vietnam, Thailand, and Indonesia, where industrial growth is outpacing grid upgrades, our fuses provide a buffer of safety. Global procurement teams often seek us out because of our ability to provide consistent "Back-up" fuse-links that coordinate perfectly with low-voltage circuit breakers and secondary protection systems.
Furthermore, our "Shu Rong" brand products are rigorously tested for aging. Over time, exposure to hot transformer oil can degrade inferior fuses. Our proprietary manufacturing process ensures that the silver-plated elements remain chemically stable, maintaining their precise melting point even after decades of immersion. This level of expertise is why we remain the preferred factory for "China 63.5*254fuse Suppliers."
We sincerely welcome customers from home and abroad to come to discuss cooperation. Together, we can work for the prosperity and development of the electric power industry and create a brilliant future with the highest standard of high-voltage protection technology.