伺服驱动器FRN5.5VG1S-4务实之选

报警触头：用于断路器事故的报警触头，且此触头只有当断路器脱扣分断后才动作，主要用于断路器的负载出现过载短路或欠电压等故障时而自由脱扣，报警触头从原来的常开位置转换成闭合位置，接通辅助线路中的指示灯或电铃、蜂鸣器等，显示或提醒断路器的故障脱扣状态。由于断路器发生因负载故障而自由脱扣的机率不太多，因而报警触头的寿命是断路器寿命的1/10。报警触头的工作电流一般不会超过1a。

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