低压电机保护回路二类配合回路中，断路器与接触器配合时，为何接触器一般要比断路器大一些？ 知乎 Sketch Coloring Page

低压电机保护回路二类配合回路中，断路器与接触器配合时，为何接触器一般要比断路器大一些？ 知乎 Template

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