Arc preventing cover device

The technical field of the utility model relates to fittings of electric appliances, in particular to an arc preventing cover device, which comprises an arc preventing cover main body and a chassis, and is characterized in that the arc preventing cover main body is a bowl shape, and is provided with a plurality of layers of bow-shaped structures from inside to outside, and the bow-shaped structures are risen in turn from outside to inside, an arc preventing chassis is further matched with the arc preventing cover main body, and the chassis is provided with a projection which has a plurality of layers of bowl-shaped structures and is anastomotic to the arc preventing cover. The arc preventing cover device has the advantages of excellent effect and long service span.