断路器就是保护人身安 全的，它可以在规定的时间内关合电路，可以在电流一场的时候关闭电路。所以断路器每次跳闸就意味着它拯救了一次电器的使用寿命，也保护了人们的安 全。

Circuit breaker is to protect personal safety, it can close the circuit in the specified time, can close the circuit in the current field. So each trip of circuit breaker means that it saves the service life of electrical appliances and protects people's safety.

断路器偶尔跳闸的话可能是断路器误动作也可能是环境影响。但是如果经常性的跳闸，就要重视起来了。肯定要以自己的生命安 全为前提。ABB塑壳断路器代理为大家总结一下断路器跳闸常见原因,结合实际情况判断，即可了解、发现、解决故障。

If the circuit breaker trips occasionally, it may be the malfunction of the circuit breaker or the environmental impact. But if frequent trip, we should pay attention to it. We must take our own life safety as the premise. ABB moulded case circuit breaker agent summarizes the common causes of circuit breaker tripping for you. Combining with the actual situation, we can understand, find and solve the fault.

原因一、过载过载保护,是断路器的一项基本功能,任何断路器,都有这项功能。过载保护,指的是电路中的电流,超过了断路器预定的数值。比如,断路器预定值为16A,而电路中的实际电流为17A,此时,断路器就会自动跳闸。

First, overload protection is a basic function of circuit breaker. Any circuit breaker has this function. Overload protection means that the current in the circuit exceeds the predetermined value of the circuit breaker. For example, if the preset value of the circuit breaker is 16a and the actual current in the circuit is 17a, the circuit breaker will trip automatically.

原因二、短路短路是指零火线,未经过用电器直接接触到了一起。此时，会产生巨大电流(无穷大),这种电流,不仅能够瞬间烧毁用电器,电死电伤用户也是分分钟的事。因此,如果出现这种情况，-定要保持断路器断开状态,直至故障被解决。

The second reason is short circuit. Short circuit refers to the zero live wire, which is not directly contacted by electrical appliances. At this time, a huge current (infinite) will be generated, which can not only instantly burn down the electrical appliances, but also electrocute and injure the users every minute. Therefore, if this happens, keep the circuit breaker open until the fault is solved.

原因三、漏电

The third reason is electric leakage

此时要说到断路器.常用的一种附件一-漏电保护器。这个附件,具有漏电保护功能,即当电路中出现漏电现象时,断路器就会自动跳闸。

At this time, we have to talk about the circuit breaker. One of the common accessories - leakage protector. This accessory has the function of leakage protection, that is, when leakage occurs in the circuit, the circuit breaker will trip automatically.

原因四、欠压除了常见的漏电保护器附件以外,还有一种附件,叫做欠电压脱扣器",顾名思义,就是当电压过低时,自动跳闸。在欠电压脱扣器附件上，会有一个和漏电保护器-样的复位按钮,当跳闸后该按钮突出,则证明电路中存在欠压故障。此时,只要等待电压稳定后,直接合闸即可。

In addition to the common accessories of leakage protector, there is another kind of accessories called undervoltage release. As the name suggests, it trips automatically when the voltage is too low. On the accessories of undervoltage release, there will be a reset button similar to leakage protector. When the button protrudes after tripping, it proves that there is undervoltage fault in the circuit. At this time, just wait for the voltage to stabilize and switch on directly.

原因五、过压除了欠压脱扣器,还有一种叫做"过欠电压脱扣器”,多了-种功能,即电压过高时,断路器依然跳闸。过欠电压脱扣器跳闸后,同样会有复位按钮。但是，此时无法看出,是由于电压过高跳闸还是电压过低跳闸,但可以肯定是由于电压不稳定。

Cause 5: in addition to the undervoltage release, there is also an over-voltage and undervoltage release, which has more than one function, that is, the circuit breaker still trips when the voltage is too high. After the over-voltage and under voltage release trips, there will also be a reset button. However, at this time, it can not be seen whether the trip is due to too high voltage or too low voltage, but it can be sure that the trip is due to voltage instability.