Ideal for battery and alternator cables or other heavy gauge cables requiring ultra-high current protection. Bolt down design Mounting holes.34" diameter spaced 2" apart. AMG fuse is a high-current, bolt-on stud-mount fuse rated up to 32 volts DC, typically handling amperages from 40A to 450A. It protects main power feeds, battery cables, alternators, inverters, and heavy automotive, Solar System chargers or marine electrical circuits from overloads and short circuits.