--- product_id: 554958351 title: "300A Bus Bar 12V Heavy Duty Module Design Power Distribution Block Waterproof Bus bar Box with 4X M8(5/16\") Terminal Studs for Battery Marine Automotive RV Car Truck (Black & Red)" brand: "jamgoer" price: "€ 115.29" currency: EUR in_stock: true reviews_count: 13 category: "Jamgoer" url: https://www.desertcart.fr/products/554958351-300a-bus-bar-12v-heavy-duty-module-design-power-distribution store_origin: FR region: France --- # 300A heavy-duty current rating Waterproof & dustproof with sealed design 4x M8 (5/16") terminal studs for secure connections 300A Bus Bar 12V Heavy Duty Module Design Power Distribution Block Waterproof Bus bar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Black & Red) **Brand:** jamgoer **Price:** € 115.29 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate Your Power Game with the Ultimate 300A Bus Bar! ## Quick Answers - **What is this?** 300A Bus Bar 12V Heavy Duty Module Design Power Distribution Block Waterproof Bus bar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Black & Red) by jamgoer - **How much does it cost?** € 115.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/554958351-300a-bus-bar-12v-heavy-duty-module-design-power-distribution) ## Best For - jamgoer enthusiasts ## Why This Product - Trusted jamgoer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Premium brass and nickel-plated bus bars resist corrosion and ensure superior conductivity. - • **Stable & Secure:** Non-slip sponge base enhances stability during operation, preventing unwanted movement. - • **Weatherproof Warrior:** Fully sealed with removable side plates and insulated rear cover to withstand marine and outdoor environments. - • **Power Up with Confidence:** Supports a robust 300A current rating for high-demand electrical systems. - • **Mount Anywhere, Label Easily:** Four mounting holes and a write-on top surface for effortless installation and organization. ## Overview The jamgoer 300A Bus Bar is a compact, heavy-duty 12V power distribution block designed for marine, automotive, RV, and truck applications. Featuring four M8 terminal studs, brass and nickel-plated bus bars for excellent conductivity and corrosion resistance, and a waterproof, dustproof nylon-glass fiber reinforced base, it ensures reliable, stable, and safe electrical connections in harsh environments. Its user-friendly design includes easy mounting options and a writable label area, making it the go-to solution for professional-grade power management. ## Description Buy jamgoer 300A Bus Bar 12V Heavy Duty Module Design Power Distribution Block Waterproof Bus bar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Black & Red): Connecting Blocks - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Great value for the money. - These worked great for my electrical upgrade on my RV. Add solar panels and controllers. Needed more posts. Quality is great. And the price was right. Review: The compactness - It’s perfect and just right. ## Features - Dimensions: The battery junction block is measured (L x W x H): 138 x 69 x 44.5 mm (5.433" x 2.72" x 1.75"); Stud size: M8 (5/16") - High Quality: Bus Material: The bus bar is made of brass and nickel plated, which has good electric conduct performance and sturdy rust-resistant; The base is made of nylon - glass fiber reinforced to protect your safety, ensures great mechanical strength and durability - Waterproof & Dustproof: This product With four removable side plates, a insulated rear cover, that's designed to withstand rain and dust, resist the air and seawater erosion - Unique Design: The base has non-slip sponge, increased Stability; And the blank write-on space on the top allows easy labeling for each branch - Easy to Mount: Surface screw fixed installation, four mounting holes make this terminal block easier to be mounted in any orientation; Removable windows for unobstructed wiring ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B55LJDD4 | | Best Sellers Rank | #71 in Distribution Connecting Blocks | | Brand Name | jamgoer | | Centerline Length | 138 Millimeters | | Color | M8 Black&Red | | Connector Type | Screw | | Current Rating | 300 Amps | | Customer Reviews | 4.6 out of 5 stars 54 Reviews | | Item Dimensions W x H | 2.72"W x 1.75"H | | Manufacturer | jamgoer | | Material | Brass, Nylon | | Material Type | Brass, Nylon | | Model | jamgoer-TB300-BlackRed | | Mounting Type | surface | | Number Of Contacts | 4 | | Number Of Poles | 4 | | Number of Positions | 4 | | Part Number | F3607-2 | | Specification Met | UL | | UPC | 699991562309 | | Voltage | 12 Volts (DC) | ## Product Details - **Brand:** jamgoer - **Color:** M8 Black&Red - **Connector Type:** Screw - **Current Rating:** 300 Amps - **Material:** Brass, Nylon - **Mounting Type:** surface - **Number Of Contacts:** 4 - **Number Of Poles:** 4 - **Product Dimensions:** 2.72"W x 1.75"H - **Voltage:** 12 Volts (DC) ## Images ![300A Bus Bar 12V Heavy Duty Module Design Power Distribution Block Waterproof Bus bar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Black & Red) - Image 1](https://m.media-amazon.com/images/I/71w7sYGXMoS.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value for the money. *by C***. on June 4, 2025* These worked great for my electrical upgrade on my RV. Add solar panels and controllers. Needed more posts. Quality is great. And the price was right. ### ⭐⭐⭐⭐⭐ The compactness *by V***N on December 8, 2025* It’s perfect and just right. ### ⭐⭐⭐⭐⭐ Perfect solution *by S***B on October 16, 2023* I own a jeep TJ, so I have upgraded it over the years and my battery was at its limit for attachments. I installed these (power and ground) and feel much better about the connections. It looks good, makes me feel safer, and works as expected. These are well built, although not waterproof, can easily have openings sealed to make it so. --- ## 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.fr/products/554958351-300a-bus-bar-12v-heavy-duty-module-design-power-distribution](https://www.desertcart.fr/products/554958351-300a-bus-bar-12v-heavy-duty-module-design-power-distribution) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-09-08*