Changshu Switch Manufacturing Co., Ltd. — Building a premium brand and achieving success through high-end excellence.

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CM3 series molded case circuit breaker

CW6 series universal circuit breaker

CAP3 Series Automatic Transfer Switch

CM6 Series Molded Case Circuit Breakers

CW3 Series Molded Case Circuit Breaker

CM3 series molded case circuit breaker

The CM3 series plastic shell circuit breakers are a series of products developed by Changshu Switch Manufacturing Co., Ltd., which are

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CW6 series universal circuit breaker

The CW6 intelligent molded-case circuit breaker has been developed in response to today’s demands for high‑performance, highly reliable, and safe operation of electrical systems, as well as emerging requirements for advanced smart power distribution, energy‑efficiency management, and ubiquitous connectivity...

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CAP3 Series Automatic Transfer Switch

The CAP3 series high‑performance automatic transfer switching devices (hereinafter referred to as “the device”) are PC‑class dedicated automatic transfer switches, primarily intended for applications at 50/60 Hz AC, with a rated operating voltage of AC 230/240 V, ...

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CM6 Series Molded Case Circuit Breakers

The new-generation CM6 series plastic‑enclosed circuit breakers, developed by Changshu Switchgear Manufacturing Co., Ltd., are designed to meet the demands of modern electrical distribution systems, featuring compact size, high performance, modularity, intelligence, and multifunctionality...

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CW3 Series Molded Case Circuit Breaker

Outstanding intelligent control technology, reliable high-performance switching technology, a comprehensive product lineup—fully meeting customer needs.

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CM3 series molded case circuit breaker

CW6 series universal circuit breaker

CAP3 Series Automatic Transfer Switch

CM6 Series Molded Case Circuit Breakers

CW3 Series Molded Case Circuit Breaker

2 Num

State Science and Technology Awards

400 +

Invention Patent

5 %

R&D investment

50 +

Industry expert

100 +

First level agent

50 +

Authorized 4S Center

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Artisan Quality, Everlasting Brilliance for a Century

Professional electrical solutions provider

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News and Stories

Overall ranking first! Changkai Gaofen passed the on-site pre qualification review of Sinopec's 0.4kV low-voltage cabinet circuit breakers and contactors through public centralized qualification review

Sinopec Material and Equipment Department was successfully carried out at Changshu Switchgear Manufacturing Co., Ltd. The joint audit team composed of SGS audit experts and Sinopec expert group conducted a comprehensive and strict audit of the company's enterprise qualifications, system assurance, technical research and development capabilities, product quality assurance, after-sales service capabilities, and other aspects. After rigorous evaluations, Changshu Switch stood out with its solid comprehensive strength and ultimately achieved an excellent score of 91.2 points, ranking first in the overall ranking.

On the list! Changshu Switch successfully shortlisted for the 2025 National Green Factory List

Recently, the Ministry of Industry and Information Technology announced the list of national level green factories and green industrial parks for 2025, and Changshu Switch was successfully shortlisted

51 years, grateful to have you, walking together all the way! Changshu switch, with ingenuity to the original intention, with innovation to the future!

The current low-voltage electrical industry is undergoing a profound transformation with digitization, green and low-carbon as its core

Crossing the Tianshan Mountains, power escorts, Changshu switch assists in the new breakthrough of power supply safety for the Wuwei Expressway Extra Long Tunnel

Recently, in the construction project of the Wuwei Expressway (Urumqi to Yuli) with extreme natural environment and strict technical requirements, Changshu Switch's multiple series of products have been successfully applied to the tunnel power distribution system, with excellent low-temperature adaptability and reliable performance, helping to steadily promote major transportation projects in China's high-altitude regions.

News and Stories