---
product_id: 754894576
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)"
price: "$126.12"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/754894576-heavy-duty-bus-bar-300a-12v-power-distribution-block-3
store_origin: US
region: United States of America
---

# 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)

**Price:** $126.12
**Availability:** ✅ In Stock

## 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)
- **How much does it cost?** $126.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/754894576-heavy-duty-bus-bar-300a-12v-power-distribution-block-3)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

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)

## 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)

## 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.

## 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

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**Shop now:** [https://www.desertcart.us/products/754894576-heavy-duty-bus-bar-300a-12v-power-distribution-block-3](https://www.desertcart.us/products/754894576-heavy-duty-bus-bar-300a-12v-power-distribution-block-3)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-10*