SKU: 51880101244

Blue Sea 30-300A Marine Rated Battery (MRBF) Dual Terminal Fuse

Sale price$54.82 Regular price$60.91
Save 10%

Pay in installments of $15.23 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Blue Sea 30-300A Marine Rated Battery (MRBF) Dual Terminal FuseSpace Saving High Amperage Circuit Protection *Please note Blue Sea fuses are manufactured by Eaton, Bussman or Ionnic and may have labelling of one of these manufacturers on the product and or packaging. The Blue Sea Marine Rated Battery (MRBF) Dual Terminal Fuse Block solves one of the most common challenges in marine and automotive electrical installations: limited space. By mounting directly onto the battery terminal, this fuse block eliminates

Space-Saving High-Amperage Circuit Protection

*Please note Blue Sea fuses are manufactured by Eaton, Bussman or Ionnic and may have labelling of one of these manufacturers on the product and/or packaging.

The Blue Sea Marine Rated Battery (MRBF) Dual Terminal Fuse Block solves one of the most common challenges in marine and automotive electrical installations: limited space. By mounting directly onto the battery terminal, this fuse block eliminates the need for short, difficult-to-install cable runs between the battery and a traditional firewall-mounted fuse holder. This design not only saves valuable room in crowded battery compartments but also reduces resistance and potential failure points in your high-current cabling.

Engineered for demanding environments, this unit is ideal for protecting high-load circuits such as inverters, windlasses, and bow thrusters. With a maximum voltage rating of 58V DC, it is perfectly suited for modern 12V, 24V, and 48V electrical systems found in boats, caravans, and off-grid 4WD setups.

Direct Battery Terminal Mounting

The primary advantage of the Blue Sea Marine Rated Battery (MRBF) Dual Terminal Fuse Block is its ability to interface directly with the power source. It is designed to mount securely onto a standard 3/8" (Approx. M10) battery terminal stud. By fusing the circuit right at the battery post, you ensure maximum safety; if a fault occurs in the main cable running to your equipment, the fuse will blow immediately at the source, preventing potential fire hazards associated with unprotected live cables.

Versatile and Robust Design

Constructed with marine-grade materials, this fuse block is built to withstand the harsh conditions of the Australian outdoors. The hardware includes stainless steel studs and tin-plated copper bus bars for maximum conductivity and corrosion resistance. The unit features M8 (Approx. 8mm) studs for connecting your load cables, accommodating heavy-duty lugs and cabling required for loads up to 300A.

Safety is paramount in high-current applications. The included insulating cap prevents accidental shorts across the conductive terminals, satisfying ABYC/USCG requirements for insulation when installed correctly. The versatile design allows for flexible cable orientation, making it easier to route heavy gauge wire in tight lockers.

Dual Circuit Capability

This model features a dual-terminal design, allowing you to fuse two independent circuits from a single battery post. This is exceptionally useful for running a main DC switchboard feed and a separate inverter charger feed from the same battery bank without stacking multiple ring terminals on the battery stud.

Key Features

  • High Interrupt Rating: Safely handles high amperage loads up to 300A.
  • Compact Footprint: Mounts directly to 3/8" (Approx. M10) battery studs, saving panel space.
  • Voltage Versatility: Rated for 58V DC, suitable for 12V, 24V, and 48V systems.
  • Secure Connections: Uses M8 (Approx. 8mm) output studs for secure cable termination.
  • Safety Cap: Insulating cap protects against accidental short circuits.
  • Corrosion Resistant: Tinned copper and marine-grade stainless steel hardware.

Whether you are refitting a yacht or building a custom tourer, the Blue Sea Marine Rated Battery (MRBF) Dual Terminal Fuse Block provides professional, reliable, and neat circuit protection exactly where you need it.

Secure your high-current electrical system today with this compact terminal fuse solution.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51880101244

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
P
Verified Purchase
Pao
Phoenix, US
★★★★★ 3
Good quality - not very useful
Good quality utility pouch, downside is no recent phones will fit in this pouch as shown and the strap on the back is useless. Would've returned it but liked that it is waterproof and can hold thin items. Not the best value for the money if you wanted to protect a phone. Zipper is very sturdy. Too thin to be functional.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
L
Verified Purchase
Lblorenzo
Boise, US
★★★★★ 5
The Casio AEQ110 BW is worth it meets all the basics
Color: Black, Style: AEQ110W-1AV
Its indeed a lovely casio watch.....meets all standards only downfall it has no illumination
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
G
Verified Purchase
Gregory Jackson AKA~Willie
Waukegan, US
★★★★★ 5
Very nice for the price!!!
Color: Black, Style: AEQ110W-1AV
Very, very Nice inexpensive watch!! Kinda tough to set it up but when done its well worth it. The icons glow so no light. The watch is a good smaller on my wrist than I expected but its functional not style Ineeded. Still a verry good watch, no questions asked!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2025
J
Verified Purchase
Jimmy P
New York, US
★★★★★ 5
Well built under $50 watch.
I got this Casio as my first Casio as I've worn watches since I was a teenager, using non brand sport watches and eventually graduating to fancy Japanese watches. Now I found myself not wanting to use those to put on wear on them because they are automatic and require some maintenance, so I figured it was time I got my first Casio. I was skeptical at first because I knew I wanted a Casio but the designs were all, dare I say generic (Or so I thought) so I ultimately wanted a G shock but, for the price and intended purpose I found this watch that just checked the boxes in design and "10-Year" battery. When I got it in the mail I was stocked, I hadn't felt a resin watch in years and set up was straight forward. Now after weeks of use I've found that through a bunch of me smacking it and hand washes, it still looks new, fortifying my satisfaction in buying this. Can recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2025
L
Verified Purchase
Leonardo Becerra
Battle Creek, US
★★★★★ 4
Excelente reloj
Color: Black/Black, Style: AEQ110W-1BV
Excelente reloj
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026

recommand products