---
product_id: 609933153
title: "DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8\" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat"
brand: "daiertek"
price: "¥23959"
currency: JPY
in_stock: false
reviews_count: 5
category: "Daiertek"
url: https://www.desertcart.jp/products/609933153-daiertek-300a-bus-bar-12v-marine-12v-power-distribution-block
store_origin: JP
region: Japan
---

# 300A continuous current capacity 6 x M10 (3/8") terminal studs Protective cover with 180° wire lug access DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat

**Brand:** daiertek
**Price:** ¥23959
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Elevate your power game with DAIERTEK’s 300A bus bar – where strength meets style!

## Quick Answers

- **What is this?** DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat by daiertek
- **How much does it cost?** ¥23959 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/609933153-daiertek-300a-bus-bar-12v-marine-12v-power-distribution-block)

## Best For

- daiertek enthusiasts

## Why This Product

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

## Key Features

- • **Innovative Design:** Round corner base adds durability and a sleek, standout look
- • **Robust Connectivity:** Six heavy-duty M10 studs ensure secure, low-resistance connections
- • **Powerhouse Performance:** Handles up to 300A at 300V AC/48V DC for high-demand systems
- • **Versatile Installation:** 180° wire lug access with special cover for flexible wiring setups
- • **Marine-Grade Reliability:** Tinned copper construction resists corrosion in automotive and marine environments

## Overview

The DAIERTEK 300A Bus Bar is a premium 12V power distribution block designed for automotive, marine, and solar applications. Featuring six M10 terminal studs and a max continuous current rating of 300 amps, it ensures robust, low-resistance connections. Its unique round corner base and protective cover with 180° wire lug access combine durability with installation flexibility, making it a top choice for professionals demanding reliable, high-performance power management.

## Description

power distribution block bus bar distribution block bus bar 12v marine bus bar 12v bus bar 12v distribution block 12v power distribution block busbar bus bar 12v marine battery bus bar battery distribution block ground distribution block ground bus bar power distribution battery terminal block marine power distribution block bus bar terminal block 12v negative bus bar 12v marine bus bar terminal block negative bus bar

Review: I bought these as power distribution bus bars on one of my smaller solar power systems. These bus bars are made of tinned plated copper bus bars with a 300 amp rating. The bus bars are very strong with six 3/8" studs and protective covers. Great for heavy gauge cables moving lots of current. These bus bars are very capable and have high conductivity for a low resistance connection. If you want a great connection, make absolutely sure the bus bars are copper. They are very easy to install and have lots of room for expansion. These bus bars are a terrific value for the price. I highly reccomend them to anyone looking for good bus bars for solar, RV, Marine and other applications. I give them 5 stars.
Review: Great value for money

## Features

- 【Product Name】- Bus bar terminal block 12v, these battery bus bar 12v will come in pairs, includes one positive bus bar (red) and one ground bus bar (black).
- 【300A M10 Stud Busbar】- This battery distribution block can handle max 300A continuous amperage at Max 300V AC or 48V DC voltage. Each battery terminal block includes - 6 x M10 (3/8")terminal studs.
- 【Round Corner Base】 - This 12v bus bar is unique round corner base design, which makes the marine bus bar unique and special, looks more extraordinary compared with others.
- 【Special Design Cover】 - The exposed area of two side of this 12v power distribution block cover allows 180° wire lug installation, can meet a variety kinds of install methods of end terminals.
- 【Application】 - This 300A bus bar will have better performance in high current systems. The package includes one positive and one ground distribution block, suitable for automotive, car, marine boat, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBZDTHWH |
| Are batteries included? | No |
| Best Sellers Rank | #367,328 in Electronics ( See Top 100 in Electronics ) #3 in Car & Vehicle Distribution Blocks |
| Brand | DAIERTEK |
| Colour | 300A-M10 |
| Connector Type | Screw |
| Current Rating | 300 Amps |
| Customer Reviews | 4.8 4.8 out of 5 stars (488) |
| Date First Available | 18 December 2023 |
| Item Dimensions LxWxH | 17.8 x 17.8 x 4.6 Centimeters |
| Item Height | 1.82 Inches |
| Item Pitch | 0.38 Inches |
| Item Weight | 880 g |
| Item Width | 7.01 Inches |
| Item model number | BB300-T6M10-C-BR |
| Manufacturer | DAIERTEK |
| Material | Copper |
| Model number | BB300-T6M10-C-BR |
| Mounting Type | Screw Mount |
| Number Of Contacts | 6 |
| Number Of Poles | 6 |
| Product Dimensions | 17.81 x 17.81 x 4.62 cm; 880 g |
| Voltage | 12 Volts |

## Product Details

- **Connector Type:** Screw
- **Current Rating:** 300 Amps
- **Item Pitch:** 0.38 Inches
- **Mounting Type:** Screw Mount
- **Number Of Contacts:** 6

## Images

![DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat - Image 1](https://m.media-amazon.com/images/I/719KWJ2I29L.jpg)
![DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat - Image 2](https://m.media-amazon.com/images/I/7177GYR7bkL.jpg)
![DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat - Image 3](https://m.media-amazon.com/images/I/71VxgomV3zL.jpg)
![DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat - Image 4](https://m.media-amazon.com/images/I/71gl095r9mL.jpg)
![DAIERTEK 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat - Image 5](https://m.media-amazon.com/images/I/71Lkr2R82bL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***3 on 13 November 2022*

I bought these as power distribution bus bars on one of my smaller solar power systems. These bus bars are made of tinned plated copper bus bars with a 300 amp rating. The bus bars are very strong with six 3/8" studs and protective covers. Great for heavy gauge cables moving lots of current. These bus bars are very capable and have high conductivity for a low resistance connection. If you want a great connection, make absolutely sure the bus bars are copper. They are very easy to install and have lots of room for expansion. These bus bars are a terrific value for the price. I highly reccomend them to anyone looking for good bus bars for solar, RV, Marine and other applications. I give them 5 stars.

### ⭐⭐⭐⭐⭐ Review
*by M***R on 4 February 2026*

Great value for money

### ⭐⭐⭐⭐⭐ Review
*by A***R on 2 January 2026*

Ships quick, great quality, works awesome.

## Frequently Bought Together

- DaierTek 300A Bus Bar 12V Marine 12V Power Distribution Block with Cover 6 x 3/8" (M10) Terminal Studs Max 300V AC 48V DC Positive & Ground Busbar for Automotive Car Boat
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-16*