In July 2024, Zhejiang Tongzheng Electrical Co., Ltd. successfully obtained the patent "A Protective Switch" (Publication Number: CN221407203U) from the China National Intellectual Property Administration. This utility model provides a protective switch, which includes a housing and a trip mechanism and a relay installed within the housing. The housing comprises a main housing and a side plate that are detachably connected. The upper surface of the main housing is provided with a key extension outlet, and the side of the main housing is provided with an installation cavity for installing the first and second mounting seats as well as an inlet and outlet. On one side of the key extension outlet, a display adjustment window is provided, and the display adjustment window is set corresponding to the control module within the housing. The protective switch has a main housing and a side plate, and on the side of the housing opposite the key extension outlet, a display adjustment window is set, making the overall structure of the protective switch shell compact and small, which can conveniently display indication marks or enable the display adjustment window to cooperate with the control circuit board to facilitate external regulation of the protective switch. As a core component in the field of intelligent protection for household electricity, this technological breakthrough not only enhances the product's safety performance but also marks Tongzheng Electrical's leading position in the research and development of intelligent protective switches. The company stated that it will continue to drive industrial upgrading with patent innovation and provide more reliable "Zhejiang Made" solutions for the global power system.
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