DaierTek 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat

I am really blown away at the quality of these 300A bussbars for $35!! It's heavy! Bussbar is thick and the entire thing seems well thought out and sturdy. I am probably going to add a washer and lock washer to the studs for my piece of mind when tightening down.

I bought these as power distribution bus bars on one of my smaller solar power systems. These bus bars are made of tinned plated copper bus bars with a 300 amp rating. The bus bars are very strong with six 3/8" studs and protective covers. Great for heavy gauge cables moving lots of current. These bus bars are very capable and have high conductivity for a low resistance connection. If you want a great connection, make absolutely sure the bus bars are copper. They are very easy to install and have lots of room for expansion. These bus bars are a terrific value for the price. I highly reccomend them to anyone looking for good bus bars for solar, RV, Marine and other applications. I give them 5 stars.

Very nice and heavy duty

good for 1/0 cables. built well.

This is for the most part, a nice bus bar. I’ve always called them a distribution block. I do wish they made the 300a with a 5/16 option instead of just 3/8. This is a solid build and works well with only one major complaint. The cover is terrible. It’s like the designer put ample thought into the whole thing but little thought into the cover. The first problem is that the outside edges leave too much exposed. See the photo. This could obviously be an issue with the positive bus bar, if it came in contact with anything that could ground it. . If the cover went completely over the ends, it would remedy that. The second issue with the cover, is that it’s just not secure. It doesn’t snap or lock into place. It’s simply held in place by the two rubber bushings. I can see the cover falling off and then getting lost from being bumped or from vibration. Especially if it’s mounted vertically. I came up with my own solution and put two zip ties around it. Still, if I need to put more on it later, I would have to loosen the bus bar end screws to slide another two zip ties under the bottom. Such a great bus bar with a crappy cover design.

These bars are excellent quality. I was seriously impressed at the thickness and weight of the bus bars. In the past I have mad my own bus bars, but these are better than I could replicate and cost effective. Will buy again.

Solid, well made. These are heavy duty.

I have paid three times the price for bus bars that weren't nearly as well made as these. I do a lot of solar, and these are perfect bus bars for running leads from solar chargers and batteries to. Very sturdy, and yes I recommend them.

Solid much better that 150 amps bus bar

Fantastic busbars. I'm in the process of installing Solar and a new inverter in my small RV. Having these busbars is way better that just bolting a couple of cables together. Its kinda amazing how many cables you can start putting together, plus it makes it easier to identify what goes where. Thanks again

Only the 4 inner studs are useable if you want the clear plastic cover to stay in situ. The clear plastic cover connects to the 2 outer studs as a push fit after aligning the 2 studs with the 2 rubber O rings embedded in the cover. There is clearance at the sides of the cover adjacent to the 4 central studs to allow the cables to pass between it and the the base. But, as there's no such clearance adjacent to the 2 outer studs the cover won't fit.

Great value for money

Bonne dimension, efficace.