The utility model discloses a cabinet is shielded to power equipment with automatic switching warns mechanism, concretely relates to power equipment technical field. This cabinet is shielded to power equipment with automatic switching warns mechanism, including the cabinet body and the door body, automatic switching warning mechanism includes the demonstration end and the automatic switching switch of automatically controlled connection, and the automatic switching switch can set up in cabinet body frame's middle part, and the door body can make state diformazan terminal, state diethyl terminal put through reliably when closing, show that the end sets up in the outside of the door body, automatic change -over sets up in the frame department of the cabinet body, and automatic change -over includes insulating casing, and the last opening that is equipped with of insulating casing is equipped with spring, two terminals of a state terminal and state in the insulating casing, be equipped with the current conducting plate directly over the spring, and the current conducting plate up end even has the insulator spindle, and the insulator spindle stretches out insulating casing through the opening.