Electrical wiring device

The utility model belongs to the technical field of electrical junction boxes, and particularly relates to an electrical junction device, which comprises a junction box, the upper end of the junction box is connected with a sealing cover through a bolt, both ends of the junction box are provided with heat discharge holes, one end of the junction box is provided with a sliding chute in which a sliding block slides, and a sliding rod is arranged in the sliding chute. Through the arrangement of the heat dissipation holes, the heat dissipation holes in one side of the junction box are provided with the rectangular blocks, the other end of the junction box is provided with the sliding blocks, and the heat dissipation holes can be controlled to be opened and closed through the combined use of the rectangular plates and the sliding blocks, so that when the heat dissipation holes need to dissipate heat, the rectangular plates and the sliding blocks are opened, and the heat dissipation holes are opened. When moisture