400 Amp Solid Copper Busbar 4 Stud (5/16" Zinc, Black) Common Bus, Terminal Block

Great product. Heavy duty piece component of my DIY solar project. Made in USA. Highly recommended!

Super Heavy Duty - just what was needed for my hot rod pickup truck with a new V8 engine. Rewired lots of things - these are superb.

I have been building out my solar system for a few years now and admittedly used cheaper busbars which ended after I realized how poor they were as they warmed up significantly under heavy load. So I upgraded to these to connect my battery bank (6 Battery Packs - 1300AH of LFP, 3 packs per set of busbars) which can handle the loads and never get warm. The Busbar itself is quite thick to carry up to 600A, the base & cover are high quality and very strong, no flimsy cover.As the photo shows, the (+) Bar is offset from the wall by 3/4" which provides enough clearance to install MRBF Fuses and run the 4/0 wires without issues.Well worth the price !

Exactly what I had expected after reading reviews of terminal blocks. I bought two, one red and one black to connect a couple of battery banks together. Had to buy from two different sites to get the different colors and couldn't understand the price difference until I found one had Cadmium plated hardware and the other stainless. No problem for my application but just a subtle point to look out for. Quick delivery, nice terminal cover.

I searched all over for a high quality, solidly build bus bar and this is the one. If you are going to go to the expense of the rest of the components in a solar system ( or a boat for that matter) then buy once/cry once is the way to do it. These bars have a very specific job and making that job easy is done with high quality parts and tools. It will not be the thing you ever have to troubleshoot.

I can’t tell you how many of these bus bars I have ordered. I’m sure Amazon could though. I have these bars on all 3 of my vehicles and a few friends. First I’m going to say, its copper it’s what you want. doesn’t matter if it’s “tin plated”. I run a constant flow of 350 amps on two bars and roughly 270 on the third. They stay the temp of outside. They do not heat up, they do not melt. Now if you order the 5/16” version your wire lug need: a hole of 3/8”Understand? So go measure your lugs and order the size slightly smaller. If your lug is 3/8 and you order a 3/8 you’re gunna have to drill your lugs a tad wider. The best part about these is it Beats paying $100+ for a product that does the exact same thing. Buy it. Screw the little 2”x5” box versions you see on Amazon with the little box cover and punch out doors and buy this one. It’s not worth the risk of burning your entire engine bay over a $30 difference.

Busbar is built strong using quality components.  Using this in my RV with a 3000 Watt inverter.  250 Amp rated busbars are not enough when you add in solar panels.  This is the first 400 Amp busbar I’ve found to solve my problem.  Love that its rebuildable.  It comes with everything needed like the mounting screws and cover plate.  In comparing this to the cheaper Chinese busbars this one has a thick solid copper plate, the Chinese ones have a thin piece of steel.

Needed a pair of bus bars to connect 2 LiFePo battery banks and 2 inverters. These did the trick. Replaced single stud terminals with these, now it's much easier and safer to disconnect just one cable if needed. One suggestion though, to enlarge the holes in the covers, as the studs tend to misalign as they are tightened down, which makes the covers hard to put on.