广州3TB40010XC2西门子接触器经销商 3TB42220XP0
更新时间:2023-10-31 浏览数:28
所属行业:
代理
发货地址:广东省广州市增城区
产品数量:9999.00个
价格:面议
另一半是活动铁芯,构造和固定铁芯一样,用以带动主接点和接点的闭合断开。
20A以上的接触器加有灭弧罩,利用电路断开时产生的电磁力,快速拉断电弧,保护接点。
接触器可高频率操作,做为电源开启与切断控制时﹐高操作频率可达每小时1200次。
接触器的使用寿命很高,机械寿命通常为数百万次至一千万次,电寿命一般则为数十万次至数百万次。
技术发展
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![广州3TB40010XC2西门子接触器经销商](http://l.b2b168.com/2019/10/31/08/201910310813359219324.jpg)
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![广州3TB40010XC2西门子接触器经销商](http://l.b2b168.com/2019/10/31/08/201910310813362878564.jpg)
交流接触器利用主接点来控制电路,
用接点来导通控制回路。
主接点一般是常开接点,而接点常有两对常开接点和常闭接点,小型的接触器也经常作为中间继电器配合主电路使用。
交流接触器的接点,由银钨合金制成,具有良好的导电性和耐高温烧蚀性。
交流接触器动作的动力源于交流通过带铁芯线圈产生的磁场,电磁铁芯由两个「山」字形的幼硅钢片叠成,其中一个固定铁芯,套有线圈,工作电压可多种选择。为了使磁力稳定,铁芯的吸合面加上短路环。交流接触器在失电后,依靠弹簧复位。
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![广州3TB40010XC2西门子接触器经销商](http://l.b2b168.com/2019/10/31/08/201910310813370271834.jpg)
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