Yingchuang Electric Publishes Patent for Integrated Primary-and-Secondary Pole-Mounted Circuit Breaker

Zhejiang Yingchuang Electric Co., Ltd. has made new progress in smart distribution technology. According to information published by the China National Intellectual Property Administration (CNIPA), the company’s invention patent application for an “Integrated Primary-and-Secondary Pole-Mounted Circuit Breaker” has been officially published (Publication No.: CN120497088A), with a filing date of June 2025.

The patent abstract indicates that the invention relates to the field of pole-mounted circuit breaker technology, with its core innovation being a dual-drive mechanism (manual + electric) for controlling the disconnecting switch. Normally, electric control is adopted, eliminating the need for manual high-altitude operation with pull rods, greatly enhancing convenience and safety. In rare special cases (such as electric control failure), the system can switch to manual operation, ensuring reliable equipment performance.

As a qualified approved supplier for both State Grid Corporation of China and China Southern Power Grid, Yingchuang Electric’s main products include integrated primary-and-secondary pole-mounted circuit breakers, standardized disconnecting switches, indoor and outdoor high-voltage vacuum circuit breakers, ring main units, and compact secondary substations. In 2024, the company was successively recognized as a Provincial Innovative SME and a National High-Tech Enterprise.

The company stated that it will continue to focus on core technologies such as primary-secondary integration and intelligent power distribution, with increased R&D investment, delivering reliable products and technical support for the development of new power systems.