---
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: "A$68"
currency: AUD
in_stock: true
reviews_count: 8
category: "Joinfworld"
url: https://www.desertcart.com.au/products/462323482-joinfworld-bus-bar-12v-250a-power-distribution-block-4-x
store_origin: AU
region: Australia
---

# 250A max current rating 4 x 3/8" heavy-duty studs Protective cover for safety 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:** A$68
**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?** A$68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/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

- • **Built to Last:** Thick 4mm copper bus bar plate and nylon base secured by M10 post ensure durability and secure mounting.
- • **Safety First Design:** Includes protective covers and nuts to minimize accidental shorts and enhance circuit safety.
- • **Versatile Application:** Perfect for automotive, marine, solar, and custom power setups to keep wiring neat and reliable.
- • **Powerhouse Performance:** Handles up to 250A at 12V for robust, stable power distribution.
- • **Heavy-Duty Connectivity:** Equipped with 4 large 3/8" studs and #8 screw terminals for versatile cable compatibility.

## Overview

The Joinfworld Bus Bar 12V 250A Power Distribution Block features a robust 4mm thick copper plate with 4 heavy-duty 3/8" studs and #8 screw terminals, rated for 250 amps at 12 volts. Designed for automotive, marine, and solar wiring, it includes protective covers to prevent shorts and a secure nylon base for stable mounting, delivering reliable, safe, and tidy power distribution.

## Description

Buy 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: Connecting Blocks - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

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: Heavy duty wire bar - Great quality, heavy duty, great pricing, nice packaging fast shipping A+ A+ A+

## 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 1,207 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 |
| 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 |
| Specification Met | CE |
| UPC | 751717591571 |
| Upper Temperature Rating | 90 Degrees Celsius |
| Voltage | 12 Volts |

## Product Details

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

## 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)

## 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.

### ⭐⭐⭐⭐⭐ Heavy duty wire bar
*by A***N on December 30, 2025*

Great quality, heavy duty, great pricing, nice packaging fast shipping A+ A+ A+

### ⭐⭐⭐⭐⭐ Works perfect
*by R***S on December 18, 2025*

Works as intended and seems to be high quality.

## Frequently Bought Together

- 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
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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-15*