BOJACK 300A Marine Battery Fuse Holder 58V DC IP66 Waterproof, Stainless Hardware

BOJACK 300A Marine Rated Battery Fuse 58V DC Max IP66 Waterproof Fuse Holder is a compact, high-current fuse block designed to protect DC circuits up to 58V with a waterproof cap and robust stainless-steel hardware.

This marine-grade fuse holder combines a 300A MRBF-style fuse with a durable thermoplastic body, ceramic insulation and nickel-plated copper alloy contacts to deliver reliable overcurrent protection where space, moisture and vibration are concerns. Built to IP66 standards, it keeps dust and powerful water jets out of the fuse cavity while offering a compact footprint for installations on boats, vehicles, inverters and other DC power systems.

How does this fuse holder protect high-current DC circuits?

The BOJACK unit uses a 300A, nickel-plated copper alloy fuse element seated in a ceramic-insulated housing to interrupt excessive currents safely. Stainless-steel studs and nuts maintain electrical continuity and resist corrosion in harsh environments.

• Rated maximum voltage: 58V DC suitable for most marine and vehicle systems
• Fuse current rating: 300A for high-demand circuits like inverters and thrusters
• Ceramic insulation for heat and arc resistance
• Nickel-plated copper alloy fuse for excellent conductivity

Is the fuse holder waterproof and safe for marine use?

Yes — the product meets IP66 protection class, preventing dust ingress and withstanding powerful water jets. A removable waterproof insulating cap reduces the chance of accidental shorts and shields the fuse from salt spray and moisture when mounted on boats or exposed vehicles.

• IP66-rated housing blocks dust and high-pressure water
• Included red insulating cap prevents accidental contact and short circuits
• Thermoplastic PA66 body resists environmental degradation
• Stainless-steel mounting hardware resists corrosion in marine settings

How does the design fit into tight installations like engine bays or inverter cabinets?

The BOJACK fuse block is engineered for compact mounting and easy terminal access, making it suited to cramped spaces where large fuse carriers won't fit. The M8 studs and M10 mounting hole provide secure connections while keeping the overall thickness and footprint minimal.

• Compact dimensions with 2.5mm-thick fuse elements for slim profile
• Stud size: 5/16" (M8) for standard ring terminal compatibility
• Mounting hole: 3/8" (M10) for secure installation to bulkheads
• Clear PES fuse housing included for visual fuse inspection

What materials and parts come with the fuse holder?

The kit combines high-temperature thermoplastic, ceramic insulation and stainless-steel fasteners for durable electrical performance. Each package includes the hardware and a single MRBF fuse; choose the required amperage when ordering.

• Main body: PA66-RG301 thermoplastic, black
• Studs and nuts: stainless steel for strength and corrosion resistance
• Fuse: copper alloy, nickel plated, 2.5mm thick with clear PES housing
• Package: dual MRBF terminal fuse box, red cap, washers, hex nut and one 300A fuse

Who this is for: installers, boat owners, vehicle upfitters and fleet technicians who need a compact, marine-rated fuse solution for DC systems up to 58V. Ideal for smaller boats, yachts, motorhomes, inverters, bow thrusters and any application where reliable high-current protection, waterproofing and corrosion resistance are priorities.