Cooper Bussmann, 63A, FE, FF, British Standard Fuse, 660V ac. Fuse Standard: BS 88, IEC 269-4. Fixing Centres: 63.5mm. Tag Width: 12.7mm. High Rupture Capacity: Yes. Overall Length: 77mm. Body Diameter: 17.7mm. Body Height: 48mm. MPN: 63FE