The SECP control cabinet consists of a box body, plastic shell circuit breakers, copper busbars, N-busbars, PE busbars, PVC insulated wires, insulators, etc. The box body is made of cold-rolled steel plates that are bent as a whole and welded locally. Its rigidity and load-bearing capacity meet the installation requirements of electrical components. The front is a door, the back is enclosed, and the main circuit is connected by a copper busbar located below the main circuit breaker. Copper busbar, N-busbar, and PE busbar surface are treated with tin plating. The box is made of light camel colored epoxy powder electrostatic spraying. The main switch's incoming wire method is upward wire. The feeding method for the sample box is bottom feeding.