A while back, the local Do it All store sold wylex Mcb, cartridge fuses ratings 5, 15,20, 30 and 45 amp (well mcbs were slightly different sizes) and rewireable fuses 5, 15 , 20 and 30 amp but no 45 amp. Im not sure if they might have done though 15-20 years back though, but I'm not sure. Was a wylex standard range 45 amp 3036 fuse ever available? I can say I have never seen a card of fuse wire with 45 amp on it though.