Top 10 Busway Junction Manufacturers in China (2026)
Created on 01.27
Industry Overview：
Busway junction units are essential components in busbar trunking systems, responsible for connecting different sections of busway and ensuring stable current transmission with low contact resistance. Their performance directly affects the safety, reliability, and service life of power distribution systems.
With the rapid growth of industrial facilities, commercial buildings, and data centers, busbar trunking systems are increasingly replacing traditional cable distribution for main power transmission. As a result, demand for high-quality busway junction products has expanded significantly.
China has become one of the world’s most important manufacturing bases for busway systems and accessories due to:
- A complete electrical industry supply chain
- Strong metal processing and insulation material capability
- Competitive production costs
- Growing experience in international projects
Today, Chinese busway junction manufacturers supply products not only to the domestic market, but also to Southeast Asia, the Middle East, Africa, and Latin America.
Selection Criteria
To provide a more objective reference for buyers and project engineers, the manufacturers listed in this article were selected based on the following factors:
- Manufacturing capability and production scale
- Quality control and compliance with international standards
- Product range and customization ability
- Application experience in industrial and commercial projects
- Market recognition and export presence
The list includes a combination of global electrical brands with production in China, large domestic electrical groups, and specialized busway system manufacturers.
Market Classification
Busway junction manufacturers in China can generally be divided into three categories:
- Global electrical brands These companies have strong R&D capability, advanced technology, and strict quality systems. Their products are mainly used in high-end industrial and infrastructure projects.
- Large domestic electrical groups These manufacturers benefit from scale production and strong domestic distribution networks. They usually provide cost-effective solutions for large commercial and industrial applications.
- Specialized busway system manufacturers These companies focus specifically on busbar trunking systems and accessories. They emphasize flexible design, customization, and project-oriented supply.
Top 10 Busway Junction Manufacturers in China
1. Schneider Electric (China)
Schneider Electric is a global leader in energy management and automation, offering complete busbar trunking systems and junction solutions for industrial and building power distribution.
Product focus: Modular junction design with integrated safety features and optional monitoring functions.
Typical applications: Data centers, commercial complexes, and large industrial facilities.
2. Siemens (China)
Siemens provides integrated power distribution solutions covering low-voltage and medium-voltage systems, including busway junction units.
Product focus: High system compatibility with switchgear and transformers, emphasizing reliability and long service life.
Typical applications: Infrastructure projects, manufacturing plants, and utility buildings.
3. ABB (China)
ABB supplies power distribution equipment for industrial and energy sectors worldwide and has extensive project experience in China.
Product focus: High current capacity and stable contact performance designed for demanding environments.
Typical applications: Heavy industry, data centers, and critical power systems.
4. CHINT Group
CHINT is one of the largest electrical equipment manufacturers in China, covering low-voltage and medium-voltage distribution products.
Product focus: Standardized busway junction products with good cost-performance balance.
Typical applications: Commercial buildings, factories, and general industrial projects.
5. Delixi Electric
Delixi Electric focuses on low-voltage electrical equipment and has strong market coverage in both domestic and overseas markets.
Product focus: Stable and mature product lines suitable for medium-range power distribution needs.
Typical applications: Industrial workshops, office buildings, and infrastructure supporting facilities.
6. Tongyang Electrical
Tongyang Electric is a specialized manufacturer of busbar trunking systems and related accessories, providing busway junction solutions for industrial and commercial power distribution projects.
Product focus: Compact and air-insulated busway junction units with flexible structural design and customization capability.
Typical applications: Factories, commercial buildings, and power distribution rooms where space efficiency and stable connection are required.
7. Shanghai Electric
Shanghai Electric is a large state-owned enterprise group with extensive experience in power generation and power transmission equipment.
Product focus: Engineering-grade busway junction products designed for large-scale power systems.
Typical applications: Power plants, substations, and major infrastructure projects.
8. TBEA
TBEA is well known for transformer manufacturing and energy equipment and also provides integrated power distribution components.
Product focus: System-matching junction solutions designed for transformer and switchgear integration.
Typical applications: Energy projects, industrial parks, and grid-related facilities.
9. LS Electric (China)
LS Electric is a Korean electrical brand with manufacturing presence in China, serving industrial automation and power distribution markets.
Product focus: Precision-manufactured junction units with stable electrical performance.
Typical applications: Manufacturing automation systems and industrial power networks.
10. Huayi Electric
Huayi Electric focuses on low-voltage distribution equipment and customized power components.
Product focus: Flexible production and OEM-supported busway junction products.
Typical applications: Project-based supply and distributor-oriented markets.
How to Choose a Suitable Manufacturer
When selecting a busway junction supplier, buyers and engineers should consider the following factors:
- Project type: Data centers and heavy industry require higher safety margins and strict standards, while general commercial buildings may prioritize cost-performance.
- Current rating and structure: The junction unit must match the busway system’s current capacity and mechanical structure.
- Customization needs: Non-standard layouts or compact spaces often require customized junction design.
- Quality control and certification: Compliance with IEC or other international standards improves system reliability and acceptance in global projects.
- Delivery and technical support: For project-based supply, stable lead time and technical communication are critical.
Conclusion
China’s busway junction manufacturing industry combines global technology brands, large domestic electrical groups, and specialized busway system suppliers. Each type of manufacturer serves different project requirements and market segments. Rather than selecting a supplier solely based on brand or price, buyers should evaluate manufacturers based on system compatibility, project experience, and long-term reliability. A suitable busway junction solution contributes not only to stable power transmission, but also to safer and more efficient power distribution systems.
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info@tongyangelectric.com
export@tongyangelectric.com/
info@tongyangelectric.com