---
product_id: 462323482
title: "Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8\" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive"
brand: "joinfworld"
price: "KD 12.30"
currency: KWD
in_stock: true
reviews_count: 13
category: "Joinfworld"
url: https://www.desertcart.com.kw/products/462323482-joinfworld-bus-bar-12v-250a-power-distribution-block-4-x
store_origin: KW
region: Kuwait
---

# 250A max current rating 4 x 3/8" heavy-duty studs Protective terminal covers included Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive

**Brand:** joinfworld
**Price:** KD 12.30
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your setup with confidence and style!

## Quick Answers

- **What is this?** Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive by joinfworld
- **How much does it cost?** KD 12.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/462323482-joinfworld-bus-bar-12v-250a-power-distribution-block-4-x)

## Best For

- joinfworld enthusiasts

## Why This Product

- Trusted joinfworld brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First Design:** Includes protective covers and nuts to minimize accidental contact and prevent short circuits, keeping your system safe.
- • **Premium Build Quality:** Thick 4mm copper bus bar plate and nylon base secured by M10 posts for durability and reliable mounting.
- • **Powerhouse Performance:** Handles up to 250A at 12V for robust, stable power distribution in automotive, marine, and solar setups.
- • **Heavy-Duty Connectivity:** Equipped with four 3/8" studs and three #8 screw terminals to support large cables and ensure secure connections.
- • **Versatile & Neat Wiring:** Ideal for cars, boats, trucks, and solar wiring—organizes your power system with a clean, professional finish.

## Overview

The Joinfworld Bus Bar 12V 250A Power Distribution Block is a premium-grade terminal block featuring thick 4mm copper plates, four heavy-duty 3/8" studs, and protective covers. Rated for 250 amps at 12 volts, it ensures safe, stable power distribution across automotive, marine, and solar applications. Its robust construction and thoughtful design deliver reliable performance and tidy wiring, making it a must-have for professionals demanding both safety and efficiency.

## Description

Product description Product Details Display 3/8" Stud Terminal The 12v bus bar is 4 x M10 (3/8") studs and 3 x M4 (#8) screw terminals design, can allow max 250A current pass through the battery terminal block. Protect Cover & Nuts Each junction block will come with a cover and two nuts, which will shelter most exposed contact areas to reduce the risks of short circuit or touch. 4MM Thicker Copper Bus Bar The 12v bus bar features 4MM Thicker Copper Bus Bar Plate, which can be connected to wider range of cables. M4 (#8) Screw Terminal Design The 12v bus bar comes with M4 Terminal Screws. You simply insert the wire into the ring terminal and secure the terminal to the terminal block. Positive Bus Bar - Red Negative Bus Bar - Black Joinfworld Automotive Marine Battery Bus Bar 250A Bus Bar 3/8" Stud 250A Bus Bar 5/16" Stud 300A Bus Bar 3/8" Stud 400A Bus Bar 5/16" Stud 500A Bus Bar

Review: Solid Performance for High Power Applications - I've been using the bus bar in my custom 24V power bank, which runs at 100 amps, and it works like a charm. The bus bar handles the high current effortlessly, ensuring stable power distribution across my setup. The construction feels robust, and the 3/8" studs provide a secure connection for my cables. One feature I particularly appreciate is the cover, which adds an extra layer of safety by protecting the terminals from accidental contact. This is especially important in high-power applications where safety is a priority. The installation was straightforward, and it integrates well with my existing components. I haven’t encountered any issues with overheating or instability, which speaks to its quality and reliability. The only minor downside is that the cover can be a bit tricky to snap on and off, but once it's in place, it stays secure. This bus bar is an excellent choice for anyone needing a reliable power distribution solution for automotive, marine, or custom power setups. It delivers solid performance and peace of mind, even under demanding conditions.
Review: High quality buss bars! Worth the money! - High quality buss bars! And yes, you get one red and one black! Both are configured as a positive buss bar, so the black one does not ground to the mounting surface. High quality, perfect for my little relay setup in my rock crawler!

## Features

- Upgrade & Thicken: A pair of 12V power distribution block, includes a red and a black power distribution block(Positive&Negative). Our 12V Bus Bar also features 4MM Thicker Copper Bus Bar Plate which can be connected to wider range of cables
- 250A Rating: The power distribution block bus bar rated 250A when work in 12v circuit, and the battery terminal block can handle MAX 48V
- 3/8" Stud: The battery bus bar terminal block includes 4 x 3/8" studs terminal and 3 x #8 screw terminals, which makes the 12V junction block able to accept large size terminal connectors and wires. The nylon bottom is also secured by M10 post which makes it more fixed and won't strip
- Protect Cover and Nuts: Each power busbar will come with a protect cover and two nuts, which helps to shelter as much exposed area as possible to reduce the risks of accidental contact and prevent short circuit, makes the circuit safer
- Wide Application: The 12 volt buss bar with cover aims to make the wiring of circuit become neat and tidy, preventing mess harness from causing electric short circuit, it is suitable for automotive, car, truck, marine, boat, solar wiring

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B2JGKTFN |
| Best Sellers Rank | #2 in Distribution Connecting Blocks |
| Brand Name | Joinfworld |
| Color | 250A-Bus Bar |
| Connector Type | Screw |
| Current Rating | 250 Amps |
| Customer Reviews | 4.7 out of 5 stars 1,328 Reviews |
| Included Components | 1 x Positive&Ground Power Distribution Block; 4 x Mounting Screws |
| Item Dimensions W x H | 6.61"W x 2"H |
| Item Pitch | 0.38 Inches |
| Manufacturer | Joinfworld |
| Material | Copper, PA66 |
| Material Type | Copper, PA66 |
| Model | BB250-T4M10S3-C-RB-2 |
| Mounting Type | Surface Mounting |
| Number Of Contacts | 7 |
| Number Of Poles | 4 |
| Number of Positions | 4 |
| Part Number | BB250-T4M10S3-C-RB-2 |
| Pitch | 0.38 Inches |
| Specification Met | CE |
| UPC | 751717591571 |
| Unit Count | 2.0 Count |
| Upper Temperature Rating | 90 Degrees Celsius |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Joinfworld
- **Color:** 250A-Bus Bar
- **Connector Type:** Screw
- **Current Rating:** 250 Amps
- **Material:** Copper, PA66
- **Mounting Type:** Surface Mounting
- **Number Of Contacts:** 7
- **Number Of Poles:** 4
- **Product Dimensions:** 6.61"W x 2"H
- **Voltage:** 12 Volts

## Images

![Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive - Image 1](https://m.media-amazon.com/images/I/71v-GKOhKwL.jpg)
![Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive - Image 2](https://m.media-amazon.com/images/I/71aQigqMV+L.jpg)
![Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive - Image 3](https://m.media-amazon.com/images/I/71HQg99pbJL.jpg)
![Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive - Image 4](https://m.media-amazon.com/images/I/81ViD7+o-bL.jpg)
![Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8" Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive, Car, Boat, Solar Wiring - Negative&Positive - Image 5](https://m.media-amazon.com/images/I/71O9kTAkPRL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: is busbar copper or brass?**
A: Joinfworld 250A 12V Bus Bar 3/8" Power Distribution Block is made of COPPER with good electrical conductivity.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid Performance for High Power Applications
*by D***D on July 8, 2024*

I've been using the bus bar in my custom 24V power bank, which runs at 100 amps, and it works like a charm. The bus bar handles the high current effortlessly, ensuring stable power distribution across my setup. The construction feels robust, and the 3/8" studs provide a secure connection for my cables. One feature I particularly appreciate is the cover, which adds an extra layer of safety by protecting the terminals from accidental contact. This is especially important in high-power applications where safety is a priority. The installation was straightforward, and it integrates well with my existing components. I haven’t encountered any issues with overheating or instability, which speaks to its quality and reliability. The only minor downside is that the cover can be a bit tricky to snap on and off, but once it's in place, it stays secure. This bus bar is an excellent choice for anyone needing a reliable power distribution solution for automotive, marine, or custom power setups. It delivers solid performance and peace of mind, even under demanding conditions.

### ⭐⭐⭐⭐⭐ High quality buss bars! Worth the money!
*by N***C on February 11, 2026*

High quality buss bars! And yes, you get one red and one black! Both are configured as a positive buss bar, so the black one does not ground to the mounting surface. High quality, perfect for my little relay setup in my rock crawler!

### ⭐⭐⭐⭐⭐ Work Perfectly!
*by E***S on May 6, 2026*

Arrived quickly and exactly as advertised. Easy to install. Worls perfectly in my DIY solar power station.

## Frequently Bought Together

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---

*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-05-19*