Switching device, fusion switch and electrical cabinet

The utility model discloses a switching device. The switching device comprises a housing; a first pole including a first pole body pivotally mounted to the housing; a second pole including a second pole body pivotably mounted to the housing, where the first pole body and the second pole body are coaxially mounted; an elastic member circumferentially abutting between the first pole body and the second pole body; the stopping piece is installed on the shell and can move between a stopping position and a releasing position, the second pole main body comprises a stopping face for stopping the second pole main body from pivoting, and in the switching-on process of the switching device, the first pole main body is driven to rotate in the first direction and drives the second pole main body to rotate in the first direction at the same time under the action of the elastic component; before the first pole and the second pole are closed, the second pole body is blocked by a stopper such that only the first pole body co