低压断路器(曾称自动开关)是一种不仅可以接通和分断正常负荷电流和过负荷电流，还可以接通和分断短路电流的开关电器。低压断路器在电路中除起控制作用外，还具有一定的保护功能，如过负荷、短路、欠压和漏电保护等。低压断路器的分类方式很多，按使用类别分，有选择型（保护装置参数可调）和非选择型（保护装置参数不可调）,按灭弧介质分，有空气式和真空式（目前国产多为空气式）。低压断路器容量范围很大，小为4A，而可达5000A。 低压断路器广泛应用于低压配电系统各级馈出线，各种机械设备的电源控制和用电终端的控制和保护。
【【厦门鑫诺斯自动化科技有限公司】】
【业务顾问】【林丽聪】
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