When using the power ready board box (small power distribution box), we pay attention to the use quality of the power ready board box (small power distribution box). Of course, in the use of ready board box (small power distribution box), it also needs good protection. Residual current operated protector is called RCD for short. It can be divided into three types of protectors. Let's take a look!

The RCD of the ready board box (small power distribution box) without overload and short circuit protection but only with leakage protection is called the leakage switch. The RCD with overload protection, short circuit protection and leakage protection is also called the leakage circuit breaker. RCD without overload, short circuit and protection functions, without direct circuit opening and closing, and with leakage alarm function only, is also called leakage relay. This is the protector of God in the power ready board box (small power distribution box), which is also the key point required by the power ready board box (small power distribution box).