Dustproof distribution box for low-voltage apparatus

The invention relates to the technical field of power distribution boxes, and discloses a dustproof power distribution box for a low-voltage electric appliance, which comprises a base, a cooling installation body is arranged on the upper side of the base, a heat dissipation center cavity is arranged in the cooling installation body, the heat dissipation center cavity is filled with non-conductive heat dissipation liquid, an expansion body is arranged in the heat dissipation center cavity, the expansion body is inflated to expand, and the non-conductive heat dissipation liquid is filled in the expansion body. By arranging the base, the sealing cylinder, the cooling installation body, the expansion body, the heat dissipation elastic film and the like, heat generated by an electric appliance is concentrated in the heat dissipation center cavity, the expansion body expands, liquid in the heat dissipation center cavity enters the heat dissipation cavity through the outflow pipe, and due to the fact that the liquid