西门子SIRIUS 3RU热过载继电器

西门子SIRIUS 3RU热过载继电器
电流高达 100?A 的 3RU21 热过载继电器可根据电流大小为负载提供保护以实现正常起动，防止过载或相故障所造成的不允许的高温升。
过载或失相将导致电机电流超出所设定的额定电流。通过加热元件，该电流会加热装置中的双金属条，致使其弯曲，并通过脱扣机构触发辅助触点。辅助触点通过接触器切断负载。断开时间取决于脱扣电流与电流设定值 Ie 之比，并以长期稳定的脱扣特性曲线的形式存储。
开关位置指示器将脱扣状态以信号形式发送出去。在一段恢复时间过后，可手动或自动将继电器复位。
3RU2 热过载继电器适用于与变频器一起进行操作。
联系人：肖工
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欧美日进口备件专家，公司备有大量库存工控元件现货，欢迎新老客户来电垂询！
西门子SIRIUS 3RU热过载继电器
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西门子SIRIUS 3RU热过载继电器