Gently contoured 7mm plate with rounded edges, includes screw cap covers. Fused spur unit or fused connection unit, is an electrical switch with a built in fuse, designed for appliances that do not have or require a fused plug top. Fused spur units are also used for high powered electrical equipment with heavy continuous loads, so that the appliance can be isolated by a single cable from a ring main for safety and maintenance purposes. This model is 13A rated. Manufactured to the latest British Standards.