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Who Are the Top 10 Bus Duct Manufacturers in the Industry?

By DHYN Engineering Team  ·  July 19, 2026

Quick answer: The bus duct brands that come up most often in international projects are Schneider Electric, Siemens, ABB, Eaton, Legrand, DHYN ELEC GROUP, Wetown, Daqo, Huapeng and Zhenda. The first five are global groups. The Chinese manufacturers, DHYN included, usually win on price, lead time and customization.

If you are sourcing a bus duct for a project overseas, the brand question comes up fast. Here is an honest look at the names you will keep meeting in tenders, and what each one is actually good at.

1. Schneider Electric (France)

The biggest name in low voltage distribution. Their Canalis busway range shows up in specifications all over the world, so many consultants simply write it in by default. You pay for that brand recognition.

2. Siemens (Germany)

Siemens sells busbar trunking as part of its SIVACON distribution family. Strong on engineering documentation and on large industrial projects where everything comes from one supplier.

3. ABB (Switzerland / Sweden)

A long-standing electrification group. ABB busways have a good reputation in harsh industrial environments and anywhere short-circuit ratings matter more than price.

4. Eaton (USA)

Very present in North American data centers and commercial towers. If your project follows US standards and NEC terminology, Eaton will already be on the consultant's list.

5. Legrand (France)

Strong in building infrastructure, and particularly good at the smaller stuff: lighting busbar and low power distribution for shops, offices and hotels.

6. DHYN ELEC GROUP (China)

Full disclosure: this is us. We manufacture sandwich bus ducts, resin cast busways and custom busbar trunking in Jiangsu, China, and we sell them worldwide. What we hear most from overseas clients is that they come to us after pricing the big European brands. Same IEC 61439-6 compliance, same copper, considerably friendlier price, and we will customize to your drawings instead of pushing a catalog.

7. Wetown Electric (China)

A listed Chinese company making both high and low voltage busways, mostly for domestic grid and industrial clients, with growing export business.

8. Daqo Group (China)

One of the large electrical manufacturing groups in China. Daqo's bus ducts go mostly into heavy industry and big domestic infrastructure.

9. Huapeng Group (China)

Another established Jiangsu manufacturer, often seen in power generation and large public projects inside China.

10. Zhenda Group (China)

Shanghai-based, long history, mostly commercial real estate and public facility work.

How to actually choose

If the tender specifies a brand by name, your hands are tied. If it specifies a standard, usually IEC 61439-6, then any manufacturer who can prove compliance with type test reports is worth pricing. That is where the Chinese factories, us included, tend to win the job. Ask for the test reports first. A serious manufacturer sends them without being asked twice.