另一半是活动铁芯，构造和固定铁芯一样，用以带动主接点和辅助接点的开短。 20安培以上的接触器加有灭弧罩，利用断开电路时产生的电磁力，快速拉断电弧，以保护接点。 交流接触器制作为一个整体，外形和性能也在不断提高，但是功能始终不变。无论技术的发展到什么程度，普通的交流接触器还是有其重要的地位。

交流接触器的接法

常开触点串接在电源输入与用电器之间，控制线圈接控制电源，用接通、停止按钮则连接辅助开关常开触点

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AX09-30-01-81*24V 50/60Hz
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AX09-30-10-81*24V 50/60Hz
AX09-30-10-83*48V 50/60Hz