MRBF Terminal Fuse Block Kit (Fuse Included) – Single Stud 5/16" (M8) Compact Marine Rated Battery Fuse 030A

Using it for van build electrical setup, the item shipped fast. I am using them directly on batteries and my terminal block. Great quality product, highly recommended.

I am using this on an 8-battery solar bank with each 2-battery series fused on the load side. This provides short circuit/overload protection at each module as close to the battery as possible. Having the fuse block on the battery also makes for a nice heat sink. The block and fuse are very compact and easy to install. Remember to account for a fused connection in your overall wire load/temp/size calculations - there are plenty of online calculators out there to make this calculation for you.

The system I am building will be installed in a location where there just is not much space to spread out the components. I have used these fuse blocks in two locations: bolted directly to the positive lithium battery terminal (for a main system fuse) and on the output terminal of the main system switch (for a high amperage branch circuit). I do not recommend attaching directly to a battery terminal if you are not using lithium batteries. Other than space considerations the other reason I use these is because they have an ingress rating of IP66, so they can handle adverse environmental conditions. The only downside of these MRBF fuses is that the replacement fuses are very expensive compared to MEGA/AMG fuses and especially the AMI/MIDI fuses.

Seems a bit expensive for what it is but it's a good compact solution.

If you have batteries of any kind you need to put these on them to help protect your investment. If something were to short out this could prevents wire damage and fire if you get the right size fuses to go with it. I have 6 deep cycle i have these on that power up my solar system. If anything does happen they will save my system and house. I only put 75 amp on each one. 75 x 6 = 450 amps thats a lot of go go juice that can do some serious damage. So don't think you need more then you should. Under size you fuses if you blow one, find out why then upsize. Or just design you system to match you needs. I see campers using 30 amp fuses in a 5 amp radio. Really?

Was a little expensive but everything is for my boat lol. Seems to work well with my add-a-battery system and nothing failed on the maiden voyage with everything hooked up.

Rather than buy a $10 fuse/fuse holder and have to cut the battery cable to splice the fuse holder in, this great alternative is far easier to install on the battery itself and allows you to maintain the integrity of your cables uncut--providing more cable strength, current pass through and options for passing cables through bulkheads, etc.

This name brand costs a little more but it's also the last line of defense before something catastrophic happens. It's worth the extra money!

Not cheap, but a quality product to have a powerful fuse coming off the battery. In our self constructed electrical system, it's a necessary piece.

Upgraded to a high output alternator and this sits on my + battery terminal, connected to the alternator. A nice compact profile. Make sure you have a good connection to your battery clamps otherwise this thing can overheat and the plastic starts to melt.