---
product_id: 143380952
title: "4 Post Power Distribution Block Bus Bar with Cover - Made in The USA - 250 Amp Rating - Marine, Automotive, and Solar Wiring - Set of 2 (5/16\")"
brand: "r2x racing"
price: "S$71"
currency: SGD
in_stock: true
reviews_count: 8
category: "R2 X Racing"
url: https://www.desertcart.sg/products/143380952-4-post-power-distribution-block-bus-bar-with-cover-made
store_origin: SG
region: Singapore
---

# 250A max current 4-post screw terminals Anti-corrosive nickel plating 4 Post Power Distribution Block Bus Bar with Cover - Made in The USA - 250 Amp Rating - Marine, Automotive, and Solar Wiring - Set of 2 (5/16")

**Brand:** r2x racing
**Price:** S$71
**Availability:** ✅ In Stock

## Summary

> ⚡ Streamline your power game with rugged, reliable bus bars made in the USA!

## Quick Answers

- **What is this?** 4 Post Power Distribution Block Bus Bar with Cover - Made in The USA - 250 Amp Rating - Marine, Automotive, and Solar Wiring - Set of 2 (5/16") by r2x racing
- **How much does it cost?** S$71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/143380952-4-post-power-distribution-block-bus-bar-with-cover-made)

## Best For

- r2x racing enthusiasts

## Why This Product

- Trusted r2x racing brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Nickel-plated brass ensures corrosion resistance and consistent power flow.
- • **Clutter-Free Wiring:** Compact 6.6" x 1.8" design keeps your electrical system neat and professional.
- • **Dual-Pack Convenience:** Includes both red and black bus bars for seamless positive and negative wiring.
- • **Power Up with Confidence:** Handles up to 250 amps for heavy-duty automotive, marine, and solar setups.
- • **Safe & Secure Connections:** Protective covers shield terminals from damage and corrosion, ensuring longevity.

## Overview

This set of two 4-post power distribution block bus bars, rated for 250 amps, is engineered for automotive, marine, and solar electrical systems. Featuring nickel-plated brass contacts for corrosion resistance and consistent current flow, these compact bus bars include protective covers and both red and black connectors for organized, safe wiring. Proudly made in the USA, they offer a durable, professional solution to power distribution and wire management.

## Description

Buy 4 Post Power Distribution Block Bus Bar with Cover - Made in The USA - 250 Amp Rating - Marine, Automotive, and Solar Wiring - Set of 2 (5/16"): Connecting Blocks - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Quality product - Works great for when you need to hook up 2 or 3 series of batteries to your charge controller. I am sure it would work equally great for hooking up to 3 individual batteries also.
Review: Very solid product, perfect for my environment. - This thing seems rock solid. I may have gone with one size up (5/16) and probably could have used the smaller bolt size (1/4) or (3/8). The packaging was perfect for item and is Made In The USA. Another reason I went with this product. So far it is working great in my test environment and will be moving the components to my car soon. This block is running a 12V system with a power source, 3 amp and a DSP. Not sure if it shows but I also purchased the matching negative bus bar. Basically just the color is different. 4 gauge wire is being used for most with sized connections and heat wrap. So far I have been using this for a month of long term testing. One thing, just tighten the connections for a guaranteed solid connection when testing.

## Features

- Ideal for Automotive, Solar and Marine Use - Our 250 AMP 4-post power distribution block busbar is ideal for automotive, car audio, solar, and marine use. Whether you need to consolidate, distribute, or protect your electrical system, our bus bars are excellent for managing wires and distributing power
- Includes Both Red and Black Connectors - With this 2 pack of 4 post power distribution blocks, you will have plenty of connection points for both positive and negative wiring terminals with 5/16" holes. The 4-way bus wiring block will make setting up your electrical systems quick, neat, and easy
- Anti-Corrosive & Even Consistent Flow - Our bus bars 12v are anti-corrosive and constructed to handle high currents. The nickel-plated brass contact plate ensures even and consistent flow and stability
- Keep Your Wires Neatly Organized - With these power distribution blocks, you can finally organize your wiring, so it doesn't look like a rat’s nest under the hood anymore. Each power distribution bar measures a little more than 6.5" end to end at the base, 5.7" wide with the cover attached, and slightly more than 2" tall making it possible to mount in virtually any application
- Secure and Safe Connections - With each bus bar you can safely wire up to 4 accessories. Each marine-quality bus bar terminal block includes a cover to protect connections from damage and corrosion

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07THLYYH3 |
| Best Sellers Rank | #52 in Distribution Connecting Blocks |
| Brand Name | R2X Racing |
| Centerline Length | 165.1 Millimeters |
| Color | Red & Black |
| Connector Type | Screw |
| Current Rating | 250 Amps |
| Customer Reviews | 4.7 out of 5 stars 2,186 Reviews |
| Gauge | 4 |
| Included Components | Bus Bars |
| Item Dimensions W x H | 6.6"W x 1.8"H |
| Item Height | 1.8 inches |
| Manufacturer | R2X Racing |
| Material Type | Brass, Stainless Steel |
| Model | 8456a171-b526-4d4b-a3dd-112e13ab6383 |
| Mounting Type | DIN Rail Mount |
| Number Of Contacts | 4 |
| Number Of Poles | 4 |
| Number of Positions | 4 |
| Pitch | 18 Inches |
| Specification Met | ISO 9001 |
| Unit Count | 2 Count |
| Voltage | 12 Volts |

## Product Details

- **Current Rating:** 250 Amps
- **Connector Type:** Screw
- **Number Of Contacts:** 4
- **Mounting Type:** DIN Rail Mount
- **Material:** Stainless Steel, Brass
- **Color:** Red & Black
- **Brand:** R2X Racing
- **Voltage:** 12 Volts
- **Number Of Poles:** 4
- **Product Dimensions:** 6.59"W x 2"H

## Images

![4 Post Power Distribution Block Bus Bar with Cover - Made in The USA - 250 Amp Rating - Marine, Automotive, and Solar Wiring - Set of 2 (5/16") - Image 1](https://m.media-amazon.com/images/I/61CUk8lD02L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality product
*by G***N on September 16, 2025*

Works great for when you need to hook up 2 or 3 series of batteries to your charge controller. I am sure it would work equally great for hooking up to 3 individual batteries also.

### ⭐⭐⭐⭐⭐ Very solid product, perfect for my environment.
*by G***S on June 13, 2025*

This thing seems rock solid. I may have gone with one size up (5/16) and probably could have used the smaller bolt size (1/4) or (3/8). The packaging was perfect for item and is Made In The USA. Another reason I went with this product. So far it is working great in my test environment and will be moving the components to my car soon. This block is running a 12V system with a power source, 3 amp and a DSP. Not sure if it shows but I also purchased the matching negative bus bar. Basically just the color is different. 4 gauge wire is being used for most with sized connections and heat wrap. So far I have been using this for a month of long term testing. One thing, just tighten the connections for a guaranteed solid connection when testing.

### ⭐⭐⭐⭐⭐ Definitely recommend
*by M***. on August 14, 2025*

Very high quality. Worth the money for sure. Bigger than I expected. Used them to set up power for ATV accessories off of auxiliary battery.

## Frequently Bought Together

- 4 Post Power Distribution Block Bus Bar with Cover - Made in The USA - 250 Amp Rating - Marine, Automotive, and Solar Wiring - Set of 2 (5/16")
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-16*