特殊的 UC 接触器可用于交流或直流电压控制，并且线圈功耗更低。S0 规格接触器上已集成两个辅助触头，所有辅助触头采用双断点结构，接通可靠性更高。尤其值得一提的是，S00 和 S0 规格的接触器通过直接加装功能模块可方便地组装成可逆或星-三角起动组合。3RF21501AA26
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