The invention discloses a power 
switch box, which comprises a box body, brushes, rollers, a switch carrier plate, heat conduction blocks, heat conduction rods, a mounting plate, fan blades, a fan output shaft, a fan motor, a first 
water pipe, a conveying belt, cooling pipes, cooling fins, a heat absorption ring, a second 
water pipe, a water tank, a water pump, a conveying output shaft, a conveyingmotor, sliding blocks, sliding grooves, rotating shafts, bearings, connecting blocks, a 
handle, hinges, a hook and grooves. The power 
switch box is reasonable in structure and novel in design, the switch carrier plate can be effectively cleaned through the brushes on the rollers, and dust is prevented from influencing normal work of electrical apparatus elements on the switch carrier plate; the rollers can be effectively moved in the grooves through the 
handle and the hook, so that the rollers are prevented from obstructing the operation of a worker on the switch carrier plate; the switch carrier plate can be effectively cooled through the first 
water pipe and the fan blades, and normal work of electrical apparatus elements on the switch carrier plate is prevented from being affected by overheating of the switch carrier plate.