Skip to content

Orders over $100 ship free within the contiguous USA

Call (657) 571-6768
$0.000 items in cart

Blue Sea Systems SKU: 5191-BSS

Blue Sea 5191 MRBF Terminal Fuse Block – 30 to 300A

$27.99

Trade pricing available — sign in

Compact, high-amp rated MRBF fuse holder. Designed to mount direct to batteries,  busbars, and other devices with 3/8″ posts for easy installation. Rated for 300A maximum. MRBF Fuses sold separately.

On backorder: ships when back in stock
Free Delivery Orders over $100
Tech Support USA based

  • 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

Same-Day Shipping

Most orders placed before 1:00 PM PST on business days ship same day from our California warehouse. Expedited overnight and 2-day options available at checkout.

Free Delivery

Take advantage of free standard shipping on orders over $100. Only available for shipping addresses in the Contiguous United States.

Returns & Warranty

We offer a 30-day return policy for unused items in original packaging. Manufacturer warranties apply to all products.

Not sure this is the right product?

Our USA-based technical team can help you size your system. Mon-Fri 7:30AM to 4:00PM PST.

Call (657) 571-6768

Related products

Batteries
Charge & Convert
Battery Chargers DC to DC Chargers Inverter/Chargers Inverters Power Supplies AC & Shore Power USB Chargers Shop all Charge & Convert →
Accessories
Automatic Charging Relay Battery Monitors Battery Switches Busbars & Terminal Blocks Circuit Breakers Fuse Blocks Fuses Timers & Low Voltage Disconnects Meters & Displays Panel Mounts Shop all Accessories →
Wire & Cable
Bulk Wire & Cable Cable Assemblies Tools Shop all Wire & Cable →
Terminals & Connectors
Anderson Connectors Deutsch Connectors Battery Lugs Shop all Terminals & Connectors →
Solar
Solar Accessories Solar Charge Controllers Shop all Solar →
Communications
Handheld Radios Mobile Radios Shop all Communications →

Trade Partner Program

Account approval typically within: 24 hours

Apply for Trade Account
(657) 571-6768 Mon-Fri 7:30AM to 4:00PM PST