32LET 32A, LET, FF, Bolted Tag Fuse, 240V ac. Cooper Bussman’s bolted tag fuse is essentially a fuse that is fitted with brackets, these brackets allow the fuse to be bolted onto a fuse holder. Predominantly this type of fuse is used within installations as a “weak link”. They are designed to break when a fault occurs, such as an overcurrent or short circuit – they are a safety and damage protection measure. Cooper Bussman’s fuses are commonly found within a multitude of industrial applications, electrical equipment and wiring systems.