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

Excellent quality bus bar for my 4 x 51.2v 100ah lifepo4 battery rack. Heavy duty construction gave me peace-of-mind when installing my 4 batteries independently (both + and - bars). Don't shy away from the fact these are more expensive than competitor bus bars... the quality is worth the small premium!

The best construction, tough

Solid construction

Excellent value for your money. Copper of a very high quality. I used it in my 48V Solar system with no issue what so ever. Makes adding batteries so easy.

Easy to install, makes great connections. I really like the insulating cover.Have eased these on 3 Rv trailer solar systems. I recommend!!

This products is really a high quality product. Nice solid metal, good mounting. It's only downfall is the cheap plastic wing nuts. I went down to the local hardware store and got insulated knobs/wing nuts and they are much better that the junk shipped with the product. You spend this much money on a product, you want right in all aspects.

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.

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 !