Large-current contact box having radiating channel

The utility model relates to a matching assembly of power equipment and specifically relates to a large-current contact box having a radiating channel and used for a handcart switch cabinet. The large-current contact box having the radiating channel includes a box. The front end of the box is closed while the rear end of the box is provided with a mounting base. The box is provided with a bus bar outlet. The middle of the box is provided with a gap. The outer periphery of the gap is covered with a section of shade having a U-shaped section. The rear end of the shade connects with the outer wall of the box. The front end of the shade is a U-shaped opening. The radiating channel is formed between the shade and the box. By adopting the above structure, too much heat generated in the contact box can be discharged out of the box through the radiating channel formed between the shade and the box. In this way, the temperature in the box is lowered, and the temperatures of a static contact and a bus bar are lowered. The shade has a function of increasing a creeping distance in the gap, thereby guaranteeing the insulation safety of the large-current contact box having the radiating channel.