Blue Sea 5104 MEGA®/AMG® Fuse - 175AMP

The Blue Sea 5104 MEGA/AMG Fuse - 175AMP is a high-capacity marine electrical protection component engineered for demanding vessel power systems. This fuse delivers reliable circuit protection in the 100–300 ampere range, making it the most economical choice for boaters and marine equipment operators who need dependable electrical safety without premium pricing. Designed exclusively for use with Blue Sea Systems' MEGA/AMG Fuse Block, the 5104 fuse combines proven switching technology with straightforward installation.

At 175 amperes, this fuse rating protects high-draw marine circuits—large engine starter systems, auxiliary power distribution, battery banks, and integrated charging systems—where moderate protection thresholds prevent nuisance trips while maintaining safety margins. The compact 3 × 1 × 5 inch form factor and lightweight 0.1 lb design fit cleanly into MEGA/AMG fuse blocks without taking up excessive panel real estate. Marine electricians and boat owners recognize Blue Sea Systems fuses as industry-standard components that meet ABYC (American Boat and Yacht Council) marine electrical standards and withstand the corrosive salt-air environment aboard saltwater vessels.

Weekend anglers upgrading auxiliary systems, offshore fishing crews managing multi-engine power distribution, and liveaboard sailors maintaining complex electrical networks all depend on replacements like the 5104 when original fuses fail. The 175-amp specification sits in the mid-range where most mid-sized vessels draw peak loads—large enough to handle starter motors and thruster systems, yet conservative enough to provide meaningful fault protection. When your boat's MEGA/AMG fuse block calls for a 175-amp protection upgrade or replacement, the Blue Sea 5104 delivers proven reliability with no compromise on marine safety standards.