Blue Sea Systems 5191 Fuse Block Terminal 30-300 AMP

I used this as well as several other blue sea parts on a build. The blue sea parts are excellent quality, easy to work with, and well worth the investment.

The Blue Sea Systems 5191 Fuse Block Terminal has been nothing short of a revelation for my power management setup. I invested in this brilliant solution to seamlessly integrate my Dometic RTX2000 air conditioner into my Lynx distributor by Victron. The challenge with the Lynx distributor was its limited available slots, necessitating the addition of another Lynx—an expensive and space-consuming proposition. The Blue Sea Systems fuse block terminal provided an elegant and straightforward solution. By attaching it to the end of the Lynx and securely fastening it with a simple bolt-down mechanism, I was able to connect the air conditioner to the Victron system. This small yet critical addition allowed me to not only connect the air conditioner but also monitor its current, draw, and amperage. In the past, the air conditioner was directly linked to the battery, leaving me guessing about its power consumption, which was far from ideal. It's essential to note that when installing the Blue Sea Systems 5191 Fuse Block Terminal, make sure you don't over-tighten the fasteners. Refer to the manufacturer's torque specifications to ensure a secure yet safe installation. In a nutshell, the Blue Sea Systems 5191 Fuse Block Terminal is a must-have addition for anyone aiming to optimize their power management system. It's a versatile, user-friendly solution that resolves common power distribution challenges. I wholeheartedly recommend this product to fellow enthusiasts who wish to take the guesswork out of power monitoring and improve energy efficiency. It's a true game-changer, delivering on its promises and ensuring a more streamlined and efficient power setup, with a vital caution for installation.

Blue Sea Systems is my go to brand for over current protection and isolation on RV DC power systems On this however HOPING they are listening , we need a BATTERY TERMINAL FUSE set up with a 8mm bore for lithium battery's as well. The 10mm bore is to big. Can we not make a variant for the RV community? There are millions of RVs on the roads in the US. Come on folks!!! Let's get his resolve

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

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

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.

The Blue Sea Systems 5191 Fuse Block is a top-quality marine-grade terminal block. It handles high currents (up to 300A) flawlessly, with solid construction and corrosion-resistant materials. Installation is simple, and the secure connections ensure reliable power distribution. Perfect for boats and RVs—durable, efficient, and worth every penny. Highly recommended for serious electrical setups!

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.

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

Well made, easy to fit

Great quality. Need to purchase the fuse separately.

Misleading picture and description - fuse missing on delivered item

Marque fiable