The Blue Sea Systems MEGA / AMG Safety Fuse Block accepts Mega or AMG fuses 100-300Amp. Features: Ignition protected for installation aboard gasoline or diesel-powered boats Sealed cover protects fuses from the harsh marine environment Insulating cover satisfies ABYC/USCG insulation requirements Cover breakouts allow wire access in any direction 300A maximum with 4/0 cable Accepts Blue Sea Systems Square Format standard or custom label Specifications: Maximum Amperage 300A Maximum Voltage 32V DC Stud Size M8 x 1.25 Recommended Stud Torque 120 in-lb (13.56 N·m) Ring Terminal Size M8 (5/16")