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