BOJACK Terminal Fuse Block 125A — Waterproof IP66 Battery Fuse Holder for Marine/RV with Stainless-Steel Studs

BOJACK MRBF Terminal Fuse Block is a compact, marine-rated 125A battery fuse holder that protects high-current DC circuits up to 58V while resisting water and dust (IP66).

Designed for boats, RVs, inverters and heavy DC equipment, this terminal-mount fuse block combines space-saving form with rugged materials to deliver reliable short-circuit protection. The assembly uses a thermoplastic PA66 body, stainless-steel studs, and a ceramic-insulated fuse to maintain conductivity and thermal stability in harsh environments. A removable waterproof cap keeps terminals covered when not in use and lowers the risk of accidental shorts or corrosion.

How does this fuse block protect high-current DC systems?

The BOJACK MRBF fuse block interrupts excessive current before wiring and components suffer damage. Its 125A fuse element and copper-alloy nickel-plated contacts offer fast response to ignition transients and sustained overloads, while the ceramic insulation resists heat. The robust studs and secure hardware maintain low-resistance connections under load.

• 125A fuse rating for high-current circuit protection
• Copper-alloy, nickel-plated fuse element for reliable conductivity
• Ceramic insulation and stainless-steel studs for thermal and corrosion resistance
• Fast interruption of high inrush and transient currents

Is this fuse block suitable for marine and outdoor use?

Yes — the holder is built to withstand moisture and dust exposure common in marine and outdoor installations. The assembly achieves IP66-level protection, meaning the unit resists powerful water jets and prevents dust ingress. A snap-on waterproof cap and durable thermoplastic housing increase service life in salty or wet conditions.

• IP66 protection rating for water and dust resistance
• Removable waterproof insulating cap to prevent accidental shorts
• Thermoplastic PA66 body resists UV and environmental degradation
• Stainless-steel studs resist corrosion in marine atmospheres

How do I install and wire the BOJACK MRBF terminal fuse block?

Installation is straightforward: mount the block using the M10 (3/8") mounting hole and connect power via the M8 (5/16") studs. Tighten the included washer, lock washer and hex nut to secure a low-resistance connection, and fit the provided 125A MRBF fuse into the clear PES plastic fuse housing. Ensure you choose the correct amperage option before purchase — each unit ships with one fuse.

• Mounting hole: M10 (3/8") — studs: M8 (5/16")
• Includes washer, lock washer, hex nut and one 125A MRBF fuse
• Clear PES fuse housing for visual fuse inspection
• Follow equipment wiring diagrams and torque specs for studs

What materials and specs ensure long-term reliability?

The BOJACK MRBF uses materials chosen for electrical performance and durability. The fuse element is a nickel-plated copper alloy for excellent conductivity, while the holder body uses PA66 thermoplastic for heat resistance. Ceramic insulation and stainless-steel hardware reduce degradation from heat and corrosive environments.

• Body: PA66-RG301 thermoplastic; fuse housing: PES clear plastic
• Fuse thickness: 2.5mm; stud material: stainless steel
• Protection class: IP66; max voltage rating: 58V DC
• Designed for DC mains, inverters, bow thrusters, RVs and cranes

Who is this for? Technicians, boat owners, RV enthusiasts and installers who need compact, heavy-duty DC circuit protection will find the BOJACK MRBF fuse block a practical choice. It suits systems that demand high current handling in confined spaces and environments where moisture, dust, and corrosion are concerns. Select the appropriate fuse amperage for your circuit and follow manufacturer wiring practice to ensure safe, long-lasting protection.