Automatic power-off device for ponding area

The utility model belongs to the technical field of power-off protection, and discloses an automatic power-off device for a ponding area, which comprises a protection box and a sealing ring, a connecting frame is fixedly mounted in the middle of the back of an inner cavity of the protection box close to the top, and guide rods are fixedly mounted on two sides of the top of the inner cavity of the protection box. A floating plate is movably clamped to the bottom of the outer surface of the guide rod, and an ejector rod is fixedly connected to the middle of the top of the floating plate. According to the utility model, the floating plate, the push rod, the knife switch and the insulating plate are arranged to achieve the purpose of automatic power-off stabilization when water is accumulated, the floating plate moves upwards to drive the push rod to move upwards, the push rod moves upwards to push the knife switch to move upwards, the knife switch slides on the connecting frame, and the knife switch is separated