XL series low voltage distribution box is suitable for power station, substation, industrial and mining enterprises, highway tunnel and other power users. In the power supply system with ac 50/60 Hz, rated working voltage 380V, rated working current up to 630A and breaking capacity up to 15kA, to provide power conversion, distribution and control for power distribution equipment such as power, lighting and blower. Can provide overload, short circuit and leakage protection.