The utility model provides a splice type ring main unit relates to ring main unit technical field, including base, side plate and back plate, the surface of base is equipped with the side protection strip, the outside of side protection strip is equipped with the inclined plane, the inclined plane is equipped with the mounting hole, the inside of mounting hole is equipped with the nut, and the back plate is equipped with the back plate. Mounting grooves are formed in the lower portions of the side plates and the lower portion of the rear plate, bolts are mounted in the mounting grooves and connected with nuts, and the side plates and the rear plate are connected with the side protection strips through matching of the bolts and the nuts. According to the utility model, through the inclined planes arranged on the side protection strips, the protection inclined planes arranged on the front protection strips and the inner inclined planes matched with the inclined planes, water can be prevented from splashing into the cabinet body, the sealing performance of the lower part of the whole cabinet body is improved, and a
moisture-proof effect is achieved during use.