Protective device for direct-current combiner box

The utility model relates to the technical field of circuit transformation, and discloses a DC combiner box protection device, which comprises a top cover, adapting pipes are fixedly connected at four corners of the bottom end of the top cover, a heat dissipation assembly is fixedly connected in the top cover, the bottom ends of the adapting pipes are connected with a box body in a penetrating manner, and the box body is connected with a power supply. A plurality of connecting plates are fixedly connected to one side of the interior of the box body, a control ring is fixedly connected to one end of each connecting plate, and a winding assembly is rotationally connected to the interior of each control ring. According to the DC combiner box protection device, through the arrangement of the limiting assembly, the push plate, the control ring and the winding assembly, a combiner box and electronic elements thereof are fixedly installed and clamped, deviation of the combiner box and the electronic elements thereof