The Busmann 125A fuse is a large-capacity fuse for protecting the electrical systems of vehicles like automobiles and buses. It has a rating of 125 amps and safeguards the vehicle from overloads and short circuits. This type M-L fuse comes in various sizes, ranging from 5x20mm to 7x44mm and is made of zinc-plated copper alloy. It has been certified by UL and CSA for quality and safety.