Your cart is empty.
Your cart is empty.Product Description
About Us
DaierTek is an ISO factory, we are committed to producing a wide range of high-performance products since 2003. 12V power distribution block is also known as 12v bus bar. They are widely used in automotive and marine boats. The battery bus bar terminal block aims to make your wiring neat and tidy, effectively prevent the wires from getting mess, as well as reduces the risks of getting electrical short circuit.
300A Bus Bar 12V Marine Spec:
Terminal Studs: 6 x M10 (3/8")
Overall Dimension: 180mm x 38mm x 46mm (LxWxH)
Max Continuous Amperage: 300A
Max Voltage: 300V AC, 48V DC
- Package Includes:
- 1 x Red Positive Bus Bar
- 1 x Black Ground Bus Bar
- 4 x Mounting Screws
300A Busbar
For being able to work with max 300A continuous amperage, many aspects is enlarged to improve its capacity compared with 150A version, such as width and thickness of the copper plate, dimension of base, etc.
Washer Design Nuts
The nuts of this M10 terminal studs battery distribution block is washer design. Which will contribute to a fully contact between lugs and copper, makes the connection safer and more reliable.
Round Corner Base
Different from other marine bus bar, these bus bar terminal blocks 12v are round base design, which makes them unique and special, looks more extraordinary compared with other battery terminal block.
Special Design Cover
The cover of these positive and ground distribution blocks allow 180° wire installation to achieve a variety kinds of install methods of end terminals, suitable for car, automotive, boat, etc.
Repro63
2025-08-28 15:42:15
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.
Aphrael
2025-07-04 14:54:25
I'm using these DaierTek 300-amp busbars as components in my expansion of our large DIY off-grid home solar power system. Busbars like these make the task of efficiently organizing large battery cables much less difficult.I carefully measured the dimensions of the conducting busbar, and these are true 300-amp conductors. The nuts thread very smoothly onto to studs. At $40, I consider them a good value.
Kellyboy
2025-06-26 20:09:13
The bus bars are well made and are working perfectly.
sonnyb
2025-06-14 10:30:48
Got these and have been sick and unable to install. But very well made.
Joe Myers
2025-05-09 13:23:09
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.
rocky
2025-04-29 16:40:42
All mounting screws included and solidly built.
Collin
2025-03-31 17:25:27
Easy installation and perfect for adding accessories instead of running a bunch of wires on a battery
Glen T.
2025-03-27 20:46:57
I ordered this for my RV 400 amp, solar, and battery set up. It has been working great for over two years.
Kirsten Lundman
2025-02-13 14:59:55
Solidly built product - no issues or concerns.
Daniel Emond
2025-02-02 18:41:29
Good quality connector
Center Point Auto
2024-12-26 17:59:58
Needed a buss bar to tie all my batteries together. Works as intended and makes for a tidy install in a tight space.
Colin
2024-12-20 12:22:19
The media could not be loaded.
ML
2024-12-18 16:56:29
Solide et bon produit
Recommended Products
$55.00
$ 24 .99 $24.99