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Kicker 47KMFDB3 Marine-grade power distribution block — accepts MRBF fuses

Item # 20647MFDB3

Safely connect the power wires from three amplifiers on your boat.

Safely connect the power wires from three amplifiers on your boat.

Item # 20647MFDB3

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
In stock
$49.99

Other options

Get questions answered fast & free

Expert help 400+ hours training Virginia-based

About the Kicker 47KMFDB3

Dave Delamere

Product highlights:

  • marine power distribution block
  • distributes power to up to three amplifiers from one 12-volt input
  • accepts ignition-protected MRBF fuses
  • three 1-1/4" tall connection posts for power wires and MRBF fuses, one 5/8" tall connection post for the battery connection
  • stainless steel hardware and injection-molded cover
  • works with 5/16" ring terminals
  • compliant with Coast Guard and ABYC standards
  • dimensions: 4-3/4"W x 2-1/4"H x 2-1/8"D
  • warranty: 1 year
  • MFR # 47KMFDB3
  • Item # 20647MFDB3
  • California customers: Please click here for your Proposition 65 WARNING.

What's in the box:

  • One 3-way power distribution block w/ attached terminal cover

More details on the Kicker 47KMFDB3

Stacey B.

Product Research

Features

Overview: The Kicker Marine Fused Distribution Block (KMFDB3) can provide connection for up to 3 amplifiers and is designed to work with MRBF fuses (sold separately). Its stainless steel hardware and injection-molded outer cover with set-screw are compliant with AYBC and USCG insulating guidelines to ensure marine vessel safety.

Connections: The KMFDB3 includes 4 connection posts that can accept 5/16" ring-terminals, one 5/8" tall post for a battery connection and 3 additional 1-1/4" tall posts, designed to accommodate a ring-terminal and an MRBF marine fuse.

Terminal Cover: The KMFDB3 includes a protective outer cover with a set-screw holder. Break-away tabs along each side and end can be removed to accommodate wire connections.

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Customer Q&A

4 questions already asked

Q
Is the special connectors for power block?
bedford  Jul 17, 2023
1 answer
A
There are some special connectors require to use the Kicker marine 47KMFDB3, James. You'll first need the correct amperage Kicker fuse for each connection in the first link below. You will then need some Kicker marine crimp-on terminals in the second link. I have shown the 4-gauge option which is the most common used, but we can get them in 8-gauge or even 1/0 gauge for a large power wire from your battery. For a complete install we really like using the Install Bay IBHDCRIMP in the third link, one hit with your hammer and you have a nice clean crimp! We are always here to help. https://www.crutchfield.com/p_20647RBF60/Kicker-47MRBF60-60-amp.html https://www.crutchfield.com/p_20647RT4/Kicker-Marine-grade-Crimp-on-Ring-Terminals-4-gauge.html https://www.crutchfield.com/p_120HDCRIMP/Install-Bay-IBHDCRIMP.html
bo  Jul 18, 2023 (Staff)
Q
I need to connect three amps to this. A 1/0 , 4/0 and 8/0 what size wire should I run from the battery? Using kicker marine amps kxma 1200.2/ 800.4/ 400.2
jose  May 23, 2022
1 answer
A
That sounds like an awesome setup! You'll need to run 1/0 from the battery, and make sure the appropriate size Kicker marine terminal with fuse is on that battery post. You will need to run duplicate 1/0 ground/ground distribution block from the same battery as well. This Kicker unit below has the matching ABYC color coding for safety. https://www.crutchfield.com/p_20647MDB3/Kicker-47KMDB3.html
bo  May 26, 2022 (Staff)
Q
Will this handle a 1gauge wire for the input & a 4 gauge for two of the outputs, & a 2 gauge for a third out put?
bret  Sep 04, 2020
1 answer
A
Yes, however, you have to use special Kicker fuses. There is a spacer between the stud and the plate that prevented you from just connecting a loop connector. Zoom in on the base of the output studs to see what I'm talking about.
william c  Sep 04, 2020

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