Crossing the Tianshan Mountains, power escorts, Changshu switch assists in the new breakthrough of power supply safety for the Wuwei Expressway Extra Long Tunnel-Changshu Switch Manufacturing Co., Ltd. — Building a premium brand and achieving success through high-end excellence.

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

Time:

2026-08-21

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.

Project application scenarios
The Wuwei Expressway has a special geographical location, passing through high-altitude and low-temperature areas along the route, especially the distribution system of its extra long tunnel, which puts extremely high demands on the environmental adaptability of the equipment. The power distribution solution provided by Changshu Switch ensures stable power supply for tunnel lighting, ventilation, monitoring, and emergency systems, ensuring safe and reliable tunnel operation.

Product series and scale
In this project, Changshu Switch provided a complete and reliable distribution product portfolio, mainly including CM6 series molded case circuit breakers, CK3 series AC contactors, CJR3 series thermal overload relays, and CH series miniature circuit breakers. The product portfolio forms a complete distribution protection system, fully meeting the multi-level and highly reliable configuration requirements of tunnel power supply systems.

Technological breakthrough: -40 ° C extreme cold adaptability
Compared with conventional projects, the Wuwei high-speed tunnel has a low temperature operation requirement of -25 ° C for power distribution equipment. Changshu Switch, with long-term technological accumulation and environmental adaptability research and development, can provide CM6 series -40 ° C low-temperature molded case circuit breakers, ensuring reliable operation even in extreme low-temperature environments, effectively avoiding equipment failure risks caused by low temperatures. This technological advantage not only meets the practical needs of the project, but also reflects Changshu Switch's research and manufacturing strength in the field of special environmental electrical equipment.

Engineering significance
As an important passage connecting the north and south of Tianshan Mountains, the safety and stability of the tunnel power distribution system of Wuwei Expressway are related to the operational efficiency and safety of the entire line. Changshu Switch has injected "reliable power" into the construction and later operation of major infrastructure by providing highly adaptable and reliable distribution products, once again proving the application ability of domestic high-end distribution brands in extreme working conditions. In the future, Changshu Switch will continue to provide safe, intelligent, and environmentally friendly electrical solutions for more national key projects, helping Chinese manufacturing to move towards a broader horizon.