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T-Spec FDB-124M

Mini ANL fused distribution block — 1/0- to 4-gauge input, two 4- to 8-gauge outputs (fuses not included)

11 Reviews | 1 question - 5 answers

Item # 120FDB124M

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Our take on the T-Spec FDB-124M

Distributes power safely and neatly

This compact distribution block from T-Spec will handle the high-current power distribution for your multi-amp sound system, ensuring that your wiring's connected securely, looking neat, and safely fused. The set screws for the fuses have specially-designed heads that accept many common tools, even a coin, so you will always be able to change your fuse without having to carry around a special tool. Solid black nickel-plated brass construction ensures reliable power flow, and an impact-resistant plastic cover keeps the fuses and connections clean. You'll need Allen head wrenches to install this block. (Fuses sold separately.) Warranty: 1 year.

Very nice product. Well built and inexpensive.

Bob, Rockport, TX

What's in the Box:

  • Distribution block for MANL fuses with one 1/0 AWG set-screw input and two 4/8 AWG set-screw outputs
  • Plastic cover (attached)

T-Spec FDB-124M Reviews

Average Customer Review(s):

(11 Reviews)

Nice fuse holder

Bob from Rockport, TX on 1/29/2017

Crutchfield Customer Review (What's this?)

Very nice product. Well built and inexpensive.



T-Spec FDB-124M

Dustin from Colorado Springs, CO on 1/12/2017

Crutchfield Customer Review (What's this?)

This is an awesome product! I love the fact that it is very compact, but still gets the job done. I don't want to showcase my power distribution stuff, I just want it to work well. The fit and finish is very high quality. Last, but not least, it is only rated to support up to a 4ga wire on the output side but I was easily able to fit a 2ga.



T-Spec FDB-124M

Anonymous from Oshkosh, WI on 8/24/2016

Crutchfield Customer Review (What's this?)

It does exactly what it's supposed to. Good for use with 2 amplifiers.

Pros: Small, Does what it's supposed to, easy to use, straightforward design

Cons: Doesn't come with fuses

T-Spec FDB-124M

Anonymous from California on 1/3/2016

Crutchfield Customer Review (What's this?)

I been buying T-spec products for a few years now. And I have to admit that their equipment is way better than any other competitor. Power, cables, RCA cables, speaker cables etc all under the T-spec brand are the best equipment for your car audio set up.



Fused distribution bloCk

ALGIE from Virginia on 10/4/2015

Crutchfield Customer Review (What's this?)

Nice and compact and works great!!!



Great fused distribution block

Connor G. from Colleyville, Texas on 1/19/2015

Crutchfield Customer Review (What's this?)

The distribution block came packaged very nicely and had no troubles figuring out the install!

Pros: Allows you to fuse your system at the distribution block, I had a seperate fuse holder in my system but with this you're able to have different fuse sizes on each side specifically for each amps fuse requirements.

Cons: Was not completely descriptive that it had to have mini anl fuses

Good Product

Sam from Furlong, PA on 6/25/2014

Crutchfield Customer Review (What's this?)

Overall a good product. Good construction and made with high quality parts


Cons: The input does not fit a 4 gauge wire as stated.

Great Product

Berto from Kissimmee Florida on 2/28/2014

Crutchfield Customer Review (What's this?)

Works Great. Also Great in size



T-Spec FDB-124M

Shawn from Stanardsville, va on 8/6/2013

Very useful



duel battery setup

Anonymous from maryland on 7/27/2013

Crutchfield Customer Review (What's this?)

The exception of losing one of the fuse mounting screws and having to find the odd metric size replacement locally this product is great. I am using it for a dual battery setup somewhat in Reverse of the planned way (I have this protecting the battery from the isolator on one side and also fused to a large aux fuse block on the other with the large cable going to the aux battery. It works perfect for my uses and the fuses come in the sizes I need to protect my equipment

Pros: price, functionality

Cons: odd metric screw size if you loose one.

Small and perfect

Rampagerich from Bear, DE on 7/12/2013

Crutchfield Customer Review (What's this?)

Small and perfect for my Saab

Pros: Small

Cons: Nothing


Hands-on research

Product Research


Overview: This package includes a T-Spec compact 2-position, distribution block that will accept MANL fuses (not included). The solid brass construction gives you maximum conductivity. The distribution block has a flat-black finish, and is installed inside an impact-resistant polycarbonate cover with a translucent removable cover. The cover has a small footprint, with two holes in the base for mounting with screws or wire ties.

Configuration: The distribution block has one 1/0 AWG input, and two outputs for 4 AWG or 8 AWG wires. Each output requires a MANL (mini ANL) fuse (not included).

Set Screws: The wire connections are secured with set screws. A 3mm Allen wrench is required to tighten or loosen the set screws.

Universal Screw Design: The fuses are secured to the distribution block with Universal style screws to let you change fuses fast. The Universal screws can be tightened or loosened with a flat-head screwdriver, a coin, or a 3mm Allen wrench.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Advisor suggestion, worked perfectly [ DOUGLAS A  Jan 04, 2017 ]
good reviews from friends [ Damien  Oct 28, 2016 ]
Good price for a splitter [ Gerardo  Mar 21, 2016 ]
I needed a ground distribution block [ Keith  Mar 07, 2016 ]

1 question already asked

It will need two fuses if your going to use both outputs inside the distribution block. [ Gerardo  Dec 06, 2015 ]
It did not work for my application. and yes you WILL HAVE TO PURCHASE FUSES to match your amp's specific need. [ Preston  Dec 04, 2015 ]
This power distribution block need two (2) fuse [ LUIS A  Dec 04, 2015 ]
You need a fuse inside [ Evan  Dec 04, 2015 ]
If u don't place fuses in distribution block , u will need a jumper to complete the circuit . Fuse or jumper required in block to complete the connection. [ ALFRED  Dec 04, 2015 ]

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