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The Joinfworld 400A Bus Bar is a heavy-duty 12V power distribution block designed for high-current applications up to 400 amps. Featuring an 8mm thick copper bus bar, stainless steel studs, and a secure nylon base, it supports both positive and negative connections with 4 large 3/8" studs and 3 M5 screw terminals. Its protective cover and nuts enhance safety by reducing short circuit risks, making it ideal for marine, automotive, RV, and solar power systems.
| ASIN | B0G2LGXVJ8 |
| Best Sellers Rank | 29,149 in DIY & Tools ( See Top 100 in DIY & Tools ) 22 in Terminal Blocks (DIY & Tools) |
| Brand | Joinfworld |
| Connector Type | Screw |
| Connector type | Screw |
| Country Of Origin | China |
| Current Rating | 400 Amps |
| Current rating | 400 Amps |
| Customer Reviews | 4.5 out of 5 stars 71 Reviews |
| Included Components | one positive bus bar and one ground bus bar |
| Item Dimensions W x H | 16.5W x 4.9H centimetres |
| Manufacturer | Joinfworld |
| Manufacturer Part Number | BB400-T4M10S3-C-BR-2 |
| Model Number | B0G2LGXVJ8 |
| Number Of Contacts | 7 |
| Number Of Poles | 7 |
| Number of Positions | 7 |
| Number of contacts | 7 |
| Number of poles | 7 |
| Product dimensions | 16.5W x 4.9H centimetres |
| Specification Met | CE |
| Unit Count | 1.0 count |
I**S
All good
Very good
M**C
No complaints
Only used the positive bar so far .. seems like good quality.. exactly what I needed for multiple power pickups on my car
R**A
Great 400 amp buss bar set
The Joinfworld Heavy Duty 400A Bus Bar is a great heavy duty buss bar but it is a little expensive compared to other option. Honestly it probably worth 5 stars but I’m going to give it 4 out of 5 just for pricing .
R**B
Product ok, packaging not ok.
Product appears to be ok, but packaging is not. 1st set I ordered had to be sent back due to damage (caused by poor packaging) and the 2nd set made it with no product damage but inner packaging was destroyed.. Unless these are packaged correctly I would not order them again..
T**.
Returned the first one
Returned the first one, studs broke inside and couldn’t tighten down. Haven’t had time to install the replacement
H**D
good bussbar
nice heavy bussbar for your dc power project used on a 10kwh lifepo4 battery bank
Trustpilot
1 month ago
2 weeks ago