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按鈕開關

按鈕開關的結構、符號

發布日期：2022-10-11 點擊率：877

    按鈕開關是一種手動操作接通或分斷小電流控制電路的主令電器。一般情況下，它不直接控制主電路的通斷，而是控制接觸器、繼電器等電磁裝置，間接實現主電路的分合、功能轉換或電氣聯鎖。

    按鈕開關按靜態時觸頭分合狀況，可分為常開按鈕（啟動按鈕）、常閉按鈕（停止按鈕）、復合按鈕（常開、常閉組合為一體），按鈕開關的結構及在電氣原理圖中的符號如圖1。

    圖1按鈕開關的結構、符號

    常見按鈕形式多樣，應按使用及外觀要求選用，如圖2和圖3。

    圖2按鈕開關外形圖3按鈕開關實物

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