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PLC入门2低压电器开关
2026-04-25
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Key Point:1.2 低压断路器断路器是指能接通、承载以及分断正常电路条件下的电流，也能在规定的非正常电路条件（例如短路条件）下接通、承载一定时间和分断电流的一种机械开关电器
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