200 A Industrial fuse. 80 kA breaking capacity. In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit including the source of power and the load.
In order for natural selection to operate on a trait, the trait must possess heritable variation and must confer an advantage in the competition for resources. If one of these requirements does not occur, then the trait does not experience natural selection.
The term natural selection is most often defined to operate on heritable traits, because these directly participate in evolution. However, natural selection is blind in the sense that changes in phenotype can give a reproductive advantage regardless of whether or not the trait is heritable.