--- product_id: 704448701 title: "Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16\" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red)" brand: "uckasayfy" price: "FREE" currency: ARS in_stock: false category: "U Ckasayfy" url: https://www.desertcart.com.ar/products/704448701-heavy-duty-bus-bar-300a-12v-power-distribution-block-5 store_origin: AR region: Argentina --- # 300A max current 4 x 5/16" (M8) terminals V-0 flame-retardant nylon cover Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) **Brand:** uckasayfy **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > ⚡ Power up your ride with the ultimate heavy-duty bus bar—where reliability meets sleek organization! ## Quick Answers - **What is this?** Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) by uckasayfy - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/704448701-heavy-duty-bus-bar-300a-12v-power-distribution-block-5) ## 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 - • **Built to Last:** Vibration-resistant design with secure flange nut terminals ensures rock-solid connections in any environment. - • **Premium Conductivity:** 6mm-thick nickel-plated copper bus bar minimizes resistance for stable, efficient energy flow. - • **Safety First, Always:** V-0 flame-retardant nylon housing with full protective cover prevents shorts and enhances electrical safety. - • **Powerhouse Performance:** Handles a robust 300A current at 12V for seamless high-demand power distribution. - • **Clutter-Free Command Center:** Organize and centralize multiple power lines with 4 large terminals, perfect for automotive and marine setups. ## Overview The UCkasayfy Heavy Duty Bus Bar is a 12V, 300A-rated power distribution block featuring a 6mm nickel-plated copper bus bar and four 5/16" (M8) terminals. Designed with vibration resistance and a V-0 flame-retardant nylon cover, it ensures secure, safe, and efficient power management for automotive, marine, and battery systems. ## Description Buy UCkasayfy Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red): Connecting Blocks - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - 【Safety & Reliability】——Engineered for vibration resistance and electrical safety, this distribution block features secure flange nut terminals and a V-0 flame-retardant nylon housing with full protective cover. This robust design effectively prevents terminal loosening and short circuits, delivering worry‑free performance in automotive, marine, and mobile power applications - 【Premium Conductivity】——At its core is a 6mm-thick nickel-plated copper bus bar for minimal resistance and stable performance, as this 12V bus bar reliably carries a 300A rating at 12V with a maximum voltage of 48V DC - 【High-Capacity Connections】——Equipped with 4 x 5/16″ (M8) stud terminals. this battery bus bar supports large size terminal connectors and wires to integrate multiple devices into a centralized, space-saving hub for efficient power distribution - 【Organized Power Solution】——This 12 volt bus bar with cover is the ideal power distribution block to organize messy wiring and prevent a messy harness, being particularly suitable for automotive, car, truck, marine, boat, and solar wiring applications - 【After-sales Service】——Exquisite craft, strict quality control and excellent after-sales service that is why our products worth your purchase ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CJF9G3SW | | Best Sellers Rank | #67 in Distribution Connecting Blocks | | Brand Name | UCkasayfy | | Color | Red | | Connector Type | Terminal Block | | Current Rating | 300 A | | Customer Reviews | 4.3 4.3 out of 5 stars (98) | | Manufacturer | UCkasayfy | | Material Type | Brass, Nylon, Stainless Steel | | Model | UCkasayfy Model # | | Mounting Type | Flush Mount | | Number Of Contacts | 4 | | Number Of Poles | 4 | | Number of Positions | 4 | | Part Number | CB003-M8-R | | Unit Count | 1 Count | | Voltage | 12 volts | ## Product Details - **Brand:** UCkasayfy - **Color:** Red - **Connector Type:** Terminal Block - **Current Rating:** 300 A - **Manufacturer:** UCkasayfy - **Material:** Brass, Nylon, Stainless Steel - **Mounting Type:** Flush Mount - **Number Of Contacts:** 4 - **Number Of Poles:** 4 - **Voltage:** 12 volts ## Images ![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) - Image 1](https://m.media-amazon.com/images/I/41Sob9bZsuL.jpg) ![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) - Image 2](https://m.media-amazon.com/images/I/418b4d35PtL.jpg) ![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) - Image 3](https://m.media-amazon.com/images/I/519qS3zgJ8L.jpg) ![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) - Image 4](https://m.media-amazon.com/images/I/41P+n8AYXtL.jpg) ![Heavy Duty Bus Bar 300A 12V Power Distribution Block with 5/16" (M8) 4-Posts Terminals Block with Cover for Automotive, Marine, Battery System(Red) - Image 5](https://m.media-amazon.com/images/I/41zfXT81S8L.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. --- ## 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.com.ar/products/704448701-heavy-duty-bus-bar-300a-12v-power-distribution-block-5](https://www.desertcart.com.ar/products/704448701-heavy-duty-bus-bar-300a-12v-power-distribution-block-5) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-10-17*