--- product_id: 370061195 title: "300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16\") Terminal Studs for Battery Marine Automotive RV Car Truck (Red)" brand: "jamgoer" price: "€ 155.81" currency: EUR in_stock: true reviews_count: 5 category: "Jamgoer" url: https://www.desertcart.hr/products/370061195-300a-bus-bar-heavy-duty-module-design-power-distribution-block store_origin: HR region: Croatia --- # 300A max current capacity Waterproof & dustproof design 4x M8 heavy-duty terminal studs 300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) **Brand:** jamgoer **Price:** € 155.81 **Availability:** ✅ In Stock ## Summary > ⚡ Power your ride with confidence—durability meets precision! ## Quick Answers - **What is this?** 300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) by jamgoer - **How much does it cost?** € 155.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/370061195-300a-bus-bar-heavy-duty-module-design-power-distribution-block) ## 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 - • **Powerhouse Performance:** Handles up to 300A for seamless high-current distribution - • **Effortless Installation:** Four mounting holes and removable side plates make setup quick and flexible - • **Smart Stability & Labeling:** Non-slip sponge base and writable top surface for organized, secure connections - • **Built to Brave the Elements:** Waterproof and dustproof casing ensures reliable operation in marine and automotive environments - • **Rugged & Reliable Materials:** Brass and nickel-plated bus bars resist corrosion while nylon glass-fiber base guarantees durability ## Overview This 300A heavy-duty bus bar module features brass and nickel-plated terminals for superior conductivity and corrosion resistance. Its waterproof, dustproof nylon glass-fiber reinforced base ensures durability in harsh environments, making it ideal for marine, automotive, RV, and truck power distribution. With four M8 terminal studs, non-slip sponge base, and easy mounting options, it offers a secure, organized, and reliable solution for managing 12V, 24V, and 48V DC battery systems. ## Description Jamgoer 300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Busbar Box with 4X M8(5/16") Terminal Studs for battery distribution block Marine Automotive RV Car Truck (Red)Specification: •Base & Cover Material: Glass Fiber reinforced Nylon •Bus Material: Brass, Nickel plated •Working voltage: DC 12V - 48V •Max Operating Voltage: DC 48V •Max Continuous Currents: 300A •Terminal Stud Size: 4x M8 (5/16") •Dimensions (L x W x H): 138 x 69 x 44.5mm, (5.47 x 2.75 x 1.8 inch) •Weight: 12.8 ounce Package: •1 x Heavy-Duty Red Bus bar Box •Already assembled, don't worry. Review: Great value for the money. Review: Works great nice cover ## Features - Dimensions: The bus bar 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 battery distribution block 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: The power distribution block 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 battery terminals 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: RV terminal blocks 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 | B092Q3JBKD | | Best Sellers Rank | #67,600 in Electronics ( See Top 100 in Electronics ) #32 in Distribution Connecting Blocks | | Brand Name | jamgoer | | Centerline Length | 138 Millimeters | | Color | M8 Red | | Colour | M8 Red | | Connector Type | Screw | | Connector type | Screw | | Current Rating | 300 Amps | | Current rating | 300 Amps | | Customer Reviews | 4.8 out of 5 stars 265 Reviews | | Item Dimensions W x H | 6.9W x 4.5H centimeters | | Manufacturer | jamgoer | | Material | Brass , Nickel | | Material Type | Brass, Nickel | | Model | JG-DB300-4 | | Mounting Type | Panel Mount | | Mounting type | Panel Mount | | Number Of Contacts | 4 | | Number Of Poles | 4 | | Number of Positions | 4 | | Number of contacts | 4 | | Part Number | FBA-HX4-F3607-R | | Specification Met | IEC | | UPC | 699993229033 | | Unit Count | 1.0 Count | | Voltage | 48 Volts | ## Product Details - **Connector type:** Screw - **Current rating:** 300 Amps - **Material:** Brass, Nickel - **Mounting type:** Panel Mount - **Number of contacts:** 4 ## Images ![300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) - Image 1](https://m.media-amazon.com/images/I/71nrMrVgdyL.jpg) ![300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) - Image 2](https://m.media-amazon.com/images/I/71DH3jBsJKL.jpg) ![300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) - Image 3](https://m.media-amazon.com/images/I/71pP7uB7D3S.jpg) ![300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) - Image 4](https://m.media-amazon.com/images/I/61yIbAEx5LL.jpg) ![300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (Red) - Image 5](https://m.media-amazon.com/images/I/61bJ9aNHczS.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Can this terminal handle 48v dc in parallel with 100a?** A: Yes this bus bar is rated for 300amp no matter the voltage so 48 volt at 100 amp will be no problem **Q: Is this made in the United States?** A: Box says made in China. Ordered 4 of these from 3 different vendors. Installed 2 on HD trucks ( with 4/0 battery cables). Seems like good quality. Time will tell. Even covers had quality plastic (not always the case). Need to watch options of stud size (M10 vs M8 if it matters to you ). Would buy again. **Q: Same as T Tocas?** A: Seems to be identical to the T Tocas brand 300A distribution box. Probably made by the same manufacturer. It has the same specs and is made the same way as my black Jamgoer brand distrubution box. **Q: What are the posts (screws) and nuts made from?** A: Stainless since they are marine use ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value for the money. *by C***. on 4 June 2025* ### ⭐⭐⭐⭐⭐ Works great nice cover *by D***W on 26 June 2023* ### ⭐⭐⭐⭐⭐ Great *by J***G on 7 November 2025* ## Frequently Bought Together - Jamgoer 300A Bus Bar Heavy Duty Module Design Power Distribution Block 12V 24V 48V DC Waterproof Busbar Box with 4X M8(5/16") Terminal Studs for Battery Marine Automotive RV Car Truck (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 - 10pcs 4 Awg - 3/8" (M10) Sanuke Wire Lugs Ring Terminal Connectors Ends, UL Listed Heavy Duty for Battery Cable Lug Wire Electrical Eyelets with 3:1 Dual Wall Adhesive Heat Shrink --- ## 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.hr/products/370061195-300a-bus-bar-heavy-duty-module-design-power-distribution-block](https://www.desertcart.hr/products/370061195-300a-bus-bar-heavy-duty-module-design-power-distribution-block) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-17*