Blue Sea Systems2127 250 Amp MaxiBus BusBar with 4 studs

I have used these for the past year combining three charge controllers to feed a battery bank in an off-grid system. There has been once or twice I exceeded (albeit by only a few amps) the 250 amp limit, and have not seen any problems. As you get above 175 amps, they can start to get a bit above room temperature, but that is to be expected when you are throwing that kind of current through it. The highest temp I was able to garner was about 95-105 degrees F when it was pushing about over 225 amps @ +/- 24v with a temp gun at room temp.The tin coating is very good, and yes, you can definitely tell they are copper on the inside from their weight. Dimensions are spot-on which really helped me put these in an enclosure. I have had no problems with these at all, and let's be honest - they're solid pieces of metal, no moving parts - but they have lived up to every thing I can throw at them thus far.I am upgrading these to the 600 amp models as I am adding more solar and do not want to push my luck when I take it above 300 amps.If you have a need for this kind of item, don't skimp on the workmanship and get these.

This buss bar has a very thick contact area, but is compact enough to use when I installed a shunt for my RV’s solar setup.

Thick and Sturdy. This is the BAR for your project. Stop risking your cabin, shed or vehicle with Chinese knockoffs and "made in USA" but really just shipping Chyna Crap from The homeland companies. This is not made in the USA but is quality and ships in manufacturers packaging. After four other brand bars; this one held up to the rated AMP label. Buying this brand for most of my equipment now.

Don't waste time with other bus bars, these are built to perform and will be safe. I won't take a chance ever again on the cheap Chinese knockoffs.

Made very heavy duty

Top quality. I mount this under the hood of my Jeep TJ to have a nice central power supply location for accessories while leaving the battery uncluttered. Works super! Buy it!Make sure you get the matching "Insulating Cover."

I really enjoy buying Blue Sea Systems because the products are always so oversized and sturdy. It just feels strong and good and not like chinese junk

Purchased to remove all the wires connected to the negative terminal of my battery of my boat. This BusBar did exactly that. It is made of high quality materials and installed easily in my boat. The nuts have an integrated washer design with a texture on bottom that makes a strong connection that won't vibrate loose. I see no need to purchase nylon lock nuts as a result.

Using in an RV for a self constructed electrical system. Quality bus bars for any purpose.

Fiz o sistema com estes bus e aguentam bem a carga. São muito bons e fácil de instalar

La barra es buena, espesor adecuado. No soy partidario de poner una sola tuerca en los postes sin arandelas. ¡La tapa no está incluida y cuesta tanto como la propia barra colectora!

Returned it to get the 6 post 250amp bus bar.

Note that this review is for the 250AMP 4 stud bus bar, not the 150 AMP one with 10 smaller screws.Used 2 of these (1 for positive and 1 for negative) to clean up the wiring on the four 12 volt batteries in my RV. The RV dealer did a bit of a messy install a few years ago. Now I have all 4 batteries connected to this bus bar with equal length cables allowing the power draw to be exactly the same on each battery, while any load is taken from the bus bar. Same for the negative terminals - all 4 batteries connected to the 2nd bus bar which is then connected to ground. No more jumpers between batteries. This also guarantees that all batteries receive the same charge. Now it is easier to take one battery off line should one go bad.