Shu Guang
In the rapidly transforming landscape of global power electronics, the demand for OEM Fuse NH (Niederspannungs-Hochleistung, or Low Voltage High Breaking Capacity) systems has shifted from standard utility protection to sophisticated, application-specific safety measures. As a premier China OEMFuseNh Supplier, we recognize that NH fuses are the backbone of industrial circuit protection, offering unparalleled reliability in preventing catastrophic equipment failure.
Globally, the industry is witnessing a "Smart Grid Revolution." Traditional fuse technologies are now being integrated with monitoring sensors, yet the core requirement remains the same: a fuse link that reacts with precision under thermal and magnetic stress. For international procurement managers, sourcing from an expert supplier means ensuring that every component meets the stringent IEC 60282 and DIN 43620 standards, which define the physical and electrical characteristics of NH fuse links.
Located in Yueqing, Zhejiang Province—widely known as the Electrical Capital of China—Wenzhou Shuguang Fuse Co., Ltd. is a power technology powerhouse. Our journey began as "Yueqing Shuguang Fuse Factory," and over three decades, we have evolved into a vertically integrated enterprise spanning R&D, production, global sales, and comprehensive technical service.
Our status as a designated producer for the Ministry of Electric Power Industry isn't just a title; it's a testament to our engineering rigor. We specialize in high-voltage current-limiting fuses, zinc oxide arresters, drop-out fuses, and polymer insulators, serving as the primary OEM partner for global distributors seeking the "Shu Rong" brand quality.
Total compliance with ANSI C37.42, DIN43625, BS2692, and IEC60282-1 protocols.
Continuous innovation in material science to enhance thermal stability of fuse links.
ISO9001:2000 certified with rigorous high-power station testing for every batch.
The global NH fuse market is expanding at a CAGR of 5.8%, driven by urbanization in Southeast Asia and the modernization of aging grids in Europe and North America. As an OEM supplier, we bridge the gap between high-cost Western brands and low-quality generic alternatives.
Solar and Wind farms require specialized DC-rated fuses and high-voltage HRC links. Our R&D department is currently focused on optimizing fuse characteristics for PV inverters and EV charging infrastructure protection.
Global enterprises now demand "Localized Customization." Whether it's specific terminal heights for a Brazilian substation or unique melting curves for a German machinery plant, our OEM service provides the necessary flexibility.
Our products are not just manufactured; they are engineered to exceed international benchmarks. The highest technical performance of Shuguang products meets:





Providing secondary protection for distribution transformers and capacitor banks.
Protecting heavy-duty machinery and motor control centers from short-circuit surges.
High-voltage current-limiting fuses designed for harsh outdoor environmental conditions.
Ensuring the integrity of overhead line power supplies and signaling systems.
Being a leading China OEMFuseNh Supplier, we offer more than just products; we offer strategic supply chain stability. Our advantages include:
Today, Shuguang products are exported to various provincial power companies across China and international markets including Southeast Asia, the Middle East, Africa, and Europe. We have built a robust sales network that prioritizes "Development by Science" and "Survival by Quality." We welcome global buyers, engineering firms, and distributors to explore a partnership that secures the future of power distribution.
Top-tier supplier for China State Grid and local provincial utilities.
Establishing long-term business contacts in the EU and GCC regions.
Working together with global engineers to create brilliant electrical futures.