微型断路器，电气行业简称为MCB，适用于交流50/60Hz额定电压230/400V，额定电流63A线路的过载和短路保护之用，也可以在正常情况下作为线路的不频繁操作转换之用。

Miniature circuit breaker, abbreviated as MCB in the electrical industry, is suitable for overload and short-circuit protection of AC 50/60hz lines with rated voltage of 230/400v and rated current of 63A. It can also be used for infrequent operation and conversion of lines under normal conditions.

剩余电流保护装置(电气行业简称RCD)，又称“漏电开关”，是一种利用检测被保护电网内所发生的相线对地漏电或触电电流的大小，而作为发出动作跳闸信号，并完成动作跳闸任务的保护电器。在装设漏电保护器的低压电网中，正常情况下，电网相线对地泄漏电流（对于三相电网中则是不平衡泄漏电流）较小，达不到漏电保护器的动作电流值，因此漏电保护器不动作。

Residual current protection device (RCD for short in the electrical industry), also known as "leakage switch", is a kind of protection appliance that detects the magnitude of phase line earth leakage or electric shock current in the protected power grid, and acts as an action tripping signal to complete the action tripping task. In the low-voltage power grid equipped with leakage protectors, under normal circumstances, the phase line to ground leakage current of the power grid (unbalanced leakage current in the three-phase power grid) is small and cannot reach the operating current value of the leakage protectors, so the leakage protectors do not operate.

当被保护电网内发生漏电或人身触电等故障后，通过漏电保护器检测元件的电流达到其漏电或触电动作电流值时，则漏电保护器就会发生动作跳闸的指令，使其所控制的主电路开关动作跳闸，切断电源，从而完成漏电或触电保护的任务。RCD具有过载和短路保护功能，可用来保护线路或电动机的过载和短路，亦可在正常情况下作为线路的不频繁转换启动之用。

In case of leakage or personal electric shock and other faults in the protected power grid, when the current of the detection element through the leakage protector reaches its leakage or electric shock action current value, the leakage protector will give an action tripping command to make the main circuit switch controlled by it act to trip and cut off the power supply, so as to complete the task of leakage or electric shock protection. RCD has overload and short-circuit protection functions, which can be used to protect the overload and short-circuit of lines or motors, and can also be used for infrequent switching and starting of lines under normal conditions.

二者都起线路过载保护作用。微型断路器是控制电气回路的分合开关，若以空气为灭弧介质的称空气开关。一般以额定电流（负荷）选择，做为电气回路的总开关使用。漏电开关是集过载、短路和漏电保护于一体，可独立安装，相当于漏电保护器加微型断路器或漏电附件加微型断路器。

Both play the role of line overload protection. Miniature circuit breaker is the on-off switch that controls the electrical circuit. If air is used as the arc extinguishing medium, it is called air switch. Generally, the rated current (load) is used as the main switch of the electrical circuit. The leakage switch integrates overload, short circuit and leakage protection and can be installed independently, which is equivalent to leakage protector plus miniature circuit breaker or leakage accessories plus miniature circuit breaker.

ABB微型断路器厂家提醒，可以简单理解为当一个微型断路器带有漏电保护功能时，称之为漏电保护开关。如果是一个单单用于漏电保护的电气装置，则称之为漏电保护器。

The price of ABB miniature circuit breaker is reminded by the manufacturer. It can be simply understood that when a miniature circuit breaker has leakage protection function, it is called leakage protection switch. If it is an electrical device only used for leakage protection, it is called leakage protector.

微型断路器与剩余电流保护断路器的异同内容分析就是如此了，您可以关注我们网站www.jntongyu.com咨询了解更多关于该设备的信息。

This is the content analysis of the similarities and differences between miniature circuit breaker and residual current protection circuit breaker. You can follow our website www.jntongyu Com for more information about this device.