Voltage leakage protection structure for switch cabinet, switch cabinet door, and switch cabinet

The utility model relates to a voltage leakage protection structure for a switch cabinet, a switch cabinet door, and the switch cabinet. The structure comprises a protection plate which is corresponding to the inner side of a heat dissipation hole on the switch cabinet and is arranged movably. The protection plate is provided with a voltage leakage blocking position which moves towards the heat dissipation hole till a set position for blocking the heat dissipation hole. The protection plate is also provided with a heat-dissipation opening position which is far from the heat dissipation hole so as to enable the heat dissipation hole to be opened. An elastic piece, which is used for applying an action force, towards the heat-dissipation opening position, to the protection plate, is disposed between the protection plate and a wall of the switch cabinet. The elastic piece has set rigidness which enables the switch cabinet to deform during voltage leakage under the action of the protection plate, so as to enable t