---
product_id: 734498453
title: "Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8\" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red)"
brand: "uckasayfy"
price: "13417 kr"
currency: ISK
in_stock: true
reviews_count: 8
url: https://www.desertcart.is/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3
store_origin: IS
region: Iceland
---

# 300A high current capacity Flame-retardant nylon housing 4 robust 3/8" M10 terminals Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red)

**Brand:** uckasayfy
**Price:** 13417 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your setup like a pro—stay connected, stay ahead!

## Quick Answers

- **What is this?** Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red) by uckasayfy
- **How much does it cost?** 13417 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3)

## Best For

- uckasayfy enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Power Hub:** Perfect for automotive, marine, trucks, and battery systems—one block to rule them all
- • **Built to Last & Resist:** Nickel-plated brass and stainless steel ensure corrosion-free, stable connections
- • **Plug & Play Flexibility:** Four 3/8" M10 posts for seamless multi-device wiring
- • **Power Up Without Limits:** Handles a massive 300A at 12V, max 48V for ultimate energy flow
- • **Confidence in Every Connection:** Flame-retardant reinforced nylon cover with premium quality control and support

## Overview

This Heavy Duty Bus Bar is engineered for high-performance power distribution, supporting up to 300A at 12V with a max voltage of 48V. Featuring four 3/8" (M10) nickel-plated brass terminals housed in flame-retardant reinforced nylon, it offers durable, corrosion-resistant, and flexible wiring solutions ideal for automotive, marine, truck, and battery systems.

## Description

Full description not available

## Features

- 【High Amperage Capacity】——This busbar distribution block is designed to handle up to 300A of current at 12V, and can handle MAX 48V. This busbar provides a convenient solution for organizing and distributing power effectively
- 【Durable & Robust】——Constructed with reinforced nylon flame retardant material. The nickel-plated brass contact plate ensures even and consistent flow and stability. Stainless steel offers excellent durability and resistance to corrosion
- 【Flexibile & Convenient】——The 3/8" 4-post terminals of the distribution block allow for easy and secure wiring connections, providing flexibility in connecting multiple electrical devices or components
- 【Wide Application】——Suitable for a range of applications, including cars, marine, truck and battery systems. This battery terminal block is a versatile solution for efficient power management and distribution
- 【After-sales Service】——Exquisite craft, strict quality control and excellent after-sales service that is why our products worth your purchase

## Product Details

- **Current Rating:** 300 Amps
- **Connector Type:** Screw
- **Number Of Contacts:** 4
- **Mounting Type:** DIN Rail Mount
- **Material:** Nylon, Stainless Steel
- **Color:** Black & Red
- **Brand:** UCkasayfy
- **Voltage:** 12 Volts
- **Number Of Poles:** 4
- **Number of Positions:** 4

## Images

![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red) - Image 1](https://m.media-amazon.com/images/I/71naJYTPoJL.jpg)
![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red) - Image 2](https://m.media-amazon.com/images/I/71GWoj3kaWL.jpg)
![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red) - Image 3](https://m.media-amazon.com/images/I/61sdPbdTqpL.jpg)
![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red) - Image 4](https://m.media-amazon.com/images/I/61U47d7UotL.jpg)
![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red) - Image 5](https://m.media-amazon.com/images/I/61N0egWRwxL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this Bus Bar suitable for small solar systems?**
A: Yes, it is well-suited for small solar systems, providing safe and efficient power distribution.

**Q: Can it be used for automotive modifications?**
A: Yes, it can be used for automotive electrical system modifications, but please ensure sufficient installation space.

**Q: What is the current-carrying capacity of the product?**
A: It offers various options ranging from 250A to 600A to meet different power requirements, with excellent load-bearing performance. Please check the bottom of the product details page for specific options.

**Q: Is the product size too large?**
A: The product dimensions are clearly listed on the details page. Please verify the installation space before purchasing.

**Q: Does it support both M8 and M10 bolt specifications?**
A: Yes, the product comes in multiple specifications (e.g., 5/16" M8 and 3/8" M10) to accommodate different needs. Please check the bottom of the product details page for available options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Heavy duty
*by R***. on June 2, 2025*

Bar was larger than I expected. Exceeded my needs. It is great.

### ⭐⭐⭐⭐⭐ Well made
*by R***S on May 24, 2025*

Well built power distribution bar! Gives me a power point under the hood now that my battery is in the trunk.

### ⭐⭐⭐⭐ Good. Big.
*by B***L on December 10, 2024*

I wanted to get all the pos leads off my battery. I knew this was big but if you actually want to cover up the power rings/connectors the size is needed. Comes with everything you need. I do not like how the top connects. The nuts fit underneath but they will fall right out. I had to wedge them under and then screw the base on, which is trick. I only used two. I also had to break the side center out for the wires to come out the side. After all was done it does the job and looks pro!

## Frequently Bought Together

- Heavy Duty Bus Bar 300A 12V Power Distribution Block with 3/8" (M10) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Black & Red)
- TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing
- TKDMR 160Pcs Copper Wire Lugs AWG2 4 6 8 10 12 with Heat Shrink Set, 80Pcs Battery Cable Ends Ring Terminals Connectors Tubing Assortment Kit

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.is/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3](https://www.desertcart.is/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-23*