Before revision: They are available in the following ratings: 6A, 10A , 16A, 20A, 25A, 32A, 45A, 50A, 63A, 80A, 100A, 125A.Miniature circuit breaker (MCB) – Principle of operation Fuse boxes United Kingdom In the UK, older electrical consumer units (also called fuse boxes) are fitted either with semi-enclosed (rewirable) fuses or cartridge fuses (Fuse wire is commonly supplied to consumers as short lengths of 5 A-, 15 A- and 30 A-rated wire wound on a piece of cardboard.)
After revision: 1A, 3A,, 13AThey are available in the following ratings: 6A, 10A , 16A, 20A, 25A, 32A, 45A, 50A, 63A, 80A, 100A, 125A.Miniature circuit breaker (MCB) – Principle of operation Fuse boxes United Kingdom In the UK, older electrical consumer units (also called fuse boxes) are fitted either with semi-enclosed (rewirable) fuses or cartridge fuses (Fuse wire is commonly supplied to consumers as short lengths of 5 A-, 15 A- and 30 A-rated wire wound on a piece of cardboard.)