BOJACK MRBF 125A Marine Battery Fuse Block – 58V DC, IP66 Waterproof Cap, Stainless-Steel Terminals

The BOJACK MRBF Terminal Fuse Block is a compact, marine-rated 125A battery fuse holder that delivers high-current protection up to 58V DC with an IP66 waterproof cap.

Built for boats, vehicles, and tight electrical spaces, this dual terminal fuse block combines rugged thermoplastic construction, stainless-steel studs, and a clear PES fuse housing to protect DC systems from overloads and transients. Its compact footprint and robust materials make it suitable for harsh environments where corrosion resistance and reliable conductivity matter.

How does the BOJACK MRBF protect high-current DC circuits?

The MRBF fuse block uses a 125A MRBF cartridge fuse and nickel-plated copper-alloy conductors to interrupt excessive current quickly while maintaining low resistance during normal operation. Ceramic insulation and stainless-steel studs reduce the risk of heat damage and corrosion under sustained load.

• 125A MRBF fuse rated for up to 58V DC
• Copper-alloy fuse element with nickel plating for consistent conductivity
• Ceramic insulation and PA66 thermoplastic body for thermal stability
• Stainless-steel studs and hardware resist corrosion in marine settings

Is the fuse block suitable for outdoor and marine use?

Yes—this unit is designed with an IP66-rated waterproof cap that keeps water and dust out of the terminal area, reducing the risk of short circuits and performance degradation in wet or salty environments. The materials and plating are chosen to withstand marine conditions better than typical indoor fuse holders.

• IP66 waterproof and dustproof cap protects the terminals
• Thermoplastic and ceramic components tolerate humidity and temperature swings
• Stainless-steel studs and hex nuts resist rust and galvanic corrosion
• Clear PES fuse housing allows visual inspection of the fuse element

How does the compact design help with installation and space constraints?

The MRBF terminal block is engineered for tight spaces such as inverter rooms, bow thruster areas, and small engine compartments. Its dual-terminal layout and M10 mounting hole let you secure the unit easily while keeping wiring neat and accessible for maintenance.

• Small footprint fits cramped engine bays and electrical panels
• M8 studs (5/16") for secure cable termination
• M10 (3/8") mounting hole for firm chassis attachment
• Includes washer, lock washer, and hex nut for straightforward installation

What wiring and applications are best for this fuse holder?

Designed for DC main feeds and high-current branches, the BOJACK MRBF suits inverters, hoists, bow thrusters, motorhomes, and other marine or vehicle power systems where a single-point protection device is needed. Choose the correct fuse amperage for your circuit; each product includes one MRBF fuse of the listed amperage.

• Ideal for DC mains, inverter outputs, and thruster circuits
• Common in boats, yachts, RVs, new-energy vehicles, and cranes
• Works with battery banks and high-current distribution panels
• Comes with one 125A MRBF fuse; select amperage at purchase

Who is this for: The BOJACK MRBF Terminal Fuse Block is aimed at marine electricians, boat owners, RV builders, and technicians who need a compact, corrosion-resistant, high-current fuse solution for DC systems. It fits projects that demand reliable overcurrent protection in confined or harsh environments where waterproofing and durable materials are required.