Blue Sea Systems 2127 250 Amp MaxiBus BusBar with 4 studs

These are the best out there for solar power battery systems. Worth every $! If you run parallel inverters like I do you need to add the max possible DC amperage together. This is real tinned copper. Don't use brass busbars for anything you want to push power through, it has only 25% of the conductivity of copper and you'll get hot in a hurry.

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.

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

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.

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.

A magnificent piece of equipment that I use between my huge battery pack and my 4,000 watt pure sine wave inverter that can draw 300 amps. Yea I know, it is only rated for 250 amps, but that is for continuous power. At worse I draw 300 amps for 20 seconds. And from the look and weight of this beast busbar, I have no doubt it is under rated.

See my picture. I love these Blue Sea Systems busbars. I own the 6-post ones and these 4-post ones for my off-grid solar power system in the garage. Blue Sea Systems, how about contacting me for attaining a BSS M2 SOC DC meter? I am looking for a discount/promo/beta tester since I advertise all my Blue Sea Systems equipment on my YouTube channel and private FB Renewable Energy page.