About this product
The Blue Sea Systems Single MRBF Terminal Fuse Block 5191 provides compact, high-current circuit protection where space is limited. Designed to meet ABYC standards, it mounts directly to a battery post, switch, or bus bar and uses marine-rated MRBF fuses (sold separately) for reliable DC main, inverter, windlass, or thruster protection. Weatherproof and ignition protected, it’s ideal for harsh marine environments.
Key Features
- Compact, high-amp fuse—appropriate for DC Main, inverter, windlass, and bow thruster circuit protection
- Provides high current protection in tight space constraints
- Ignition protected when used with Blue Sea Systems’ MRBF Terminal Fuse
- Isolated stud design uses standard M8 hardware and permits stacking of terminals
- Insulating cap prevents accidental shorts
- Accepts 5∕16″ ring terminals
- Mounts on 3/8” terminal studs
- Fuse sold separately
Technical Specification
Ignition ProtectedNoMax. operating voltage58V DCMax. operating amperage300ATerminal studs (1)M8 (5/16″)Fuse typeMRBF (Marine Rated Battery Fuse)
No Documentation available.







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