2151 Dual MRBF Terminal Fuse Block - 30 to 300A

This compact, well-made design worked perfectly in my fifth-wheel RV. I made the switch from lead acid to LiFePO4 battery power with solar charging. I needed a compact device to provide a primary fused circuit breaker right at my 300 Sh battery. This does the job of providing protection at a reasonable cost.

High quality, easy to install. It's all about the fuse now to see if this works. Hopefully it never trips.

Why did you pick this product vs others?: It's the highest rated seller for this product. Genuine Eaton part. Photos show it having fuses but it does not come with fuses. Safety: These should be standard on all electric carts and scooters. These should also be standard on anything with long runs of battery cable.

I bought 2 of these and as I thought, they are very well made and I'm sure will work for me very well.

Using this to fuse a 4 gauge OFC wire directly at my cars battery. It's going to the alternator positive for part of "the big 3" upgrade. I'd say this is the best method for fusing the positive wire on the big 3. Most people leave their positive wire unfused for the big 3. I felt an inline fuse wasn't the best solution for such a short run and still having 6-8in of unfused wire. I'd like to even replace the inline fuse with one of these going to my audio system.

I used these on the positive terminals of two parallel 24 Volt strings in my battery bank. The fuses are not cheap, but based on my loads (and their fuses), these should only open in situations where the price of a fuse would be the least of my worries. I like that the terminal mounting protects from a short in all situations other than an uninsulated tool somehow finding its way into my battery box and then falling in such a perfect way as to contact the small exposed area of multiple terminals. The rubber insulator cap over the connection on the fuse end is a great feature but I do wish there was a rubber cap that concealed the terminal end of the fuse block. The added height of about 2-1/16" is minor and worked well for me, but is something to be aware of to ensure you do not have a conflict, in my case the total height above the battery case with the rubber cap seated was about 2-1/4" (possibly slightly more as it was a difficult location to accurately read the tape). I appreciate the protection from a short in a parallel battery or contact with one of the cables leading to the main fuse block. It may be overkill, but for me the large discharge potential of each string in the battery bank justifies the caution. The ignition protection of the Blue Sea Systems MRBF fuses was an added bonus that makes these acceptable for a variety of installations.

Where have these been my whole life? This dual terminal fuse block is built like a rock, compact, and greatly simplifies wiring versus ANL or Mega fuses. Obviously the others have there place, but for my 12v build, these are perfect.

Exactly as described. Very courteous. Highly recommended seller.

ziet meteen dat dit materiaal is.prijzig maar waar voor je geld i

Very neat system for mounting fuse directly to battery terminal. Changed battery lugs to cargo type so that fuse block would be mounted vertically.

Sehr gutes Produkt, ermöglicht eine schlanke Elektroinstallation mit dem Nachteil, daß die Sicherungen ihren Preis haben. Für mich aber trotzdem angenehmer, als eine extra MEGAfuse-Box plus Kabel einzubauen.

Well made, easy to fit

Articoli arrivati rotti, non nella confezione originale, senza il minimo imballaggio. Il venditore mi ha proposto il rimborso di uno solo dei due, che però non è mai arrivato. Ho contattato Amazon che ha provveduto a rimborsarmeli entrambi.