Switched fused spur unit or switched 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 with DP switch. Made from high quality premium grade material Complete with integral gasket for moisture protection Minimum mounting depth: 25mm. Compliant to BS 1363. 15 year guarantee.