Distributing board of undergraund distribution line

PURPOSE: A distribution panel connection element is provided to easily fix an underground distribution line by arranging components on a support plate of a distribution box. CONSTITUTION: A distribution box is connected to an underground pipe. An underground distribution line anchor(10) is fixed to the upper surface of the support plate of the distribution box with a coupling member. An underground distribution line connection unit(20) is inserted into the underground distribution line anchor. A switch unit(30) is arranged on the upper surface of the underground distribution line anchor. A controller outputs the operation signal to a compressor according to the sensing signal of the switch. A compressor supplies air to the connection member of the underground distribution line anchor according to the operation signal of the controller.