--- product_id: 734498453 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)" brand: "uckasayfy" price: "AR$173882" currency: ARS in_stock: true reviews_count: 13 category: "U Ckasayfy" url: https://www.desertcart.com.ar/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3 store_origin: AR region: Argentina --- # 300A max current V-0 flame-retardant nylon housing 4 x 3/8" (M10) stud terminals 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) **Brand:** uckasayfy **Price:** AR$173882 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your setup with confidence — the bus bar that means business! ## 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) by uckasayfy - **How much does it cost?** AR$173882 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3) ## 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 - • **Rock-Solid Safety:** Vibration-resistant design with flame-retardant nylon housing ensures ultimate electrical safety and durability. - • **Plug & Play Precision:** Four large 3/8" (M10) stud terminals accommodate heavy-duty connectors for organized, mess-free wiring. - • **Versatile Application:** Perfect for automotive, marine, battery systems, and even small solar setups—your all-in-one power hub. - • **Powerhouse Performance:** Handles a robust 300A current at 12V for seamless high-capacity power distribution. - • **Built to Last & Support:** Premium nickel-plated copper bus bar with dedicated after-sales service guarantees reliability and peace of mind. ## Overview The Heavy Duty Bus Bar 300A 12V is engineered for high-capacity, safe, and organized power distribution in automotive, marine, and battery systems. Featuring a 6mm-thick nickel-plated copper bus bar, flame-retardant nylon housing, and four 3/8" (M10) stud terminals, it delivers reliable 300A current handling with vibration resistance and short circuit protection. Ideal for professionals seeking a durable, space-saving power solution with excellent after-sales support. ## Description Product description Heavy Duty Bus Bar 300A 12V Technical Specifications Is this Bus Bar suitable for small solar systems? Yes, it is well-suited for small solar systems, providing safe and efficient power distribution. Is this Bus Bar suitable for small solar systems? Yes, it is well-suited for small solar systems, providing safe and efficient power distribution. Can it be used for automotive modifications? Yes, it can be used for automotive electrical system modifications, but please ensure sufficient installation space. Can it be used for automotive modifications? Yes, it can be used for automotive electrical system modifications, but please ensure sufficient installation space. What is the current-carrying capacity of the product? 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. What is the current-carrying capacity of the product? 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. Is the product size too large? The product dimensions are clearly listed on the details page. Please verify the installation space before purchasing. Is the product size too large? The product dimensions are clearly listed on the details page. Please verify the installation space before purchasing. Does it support both M8 and M10 bolt specifications? 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. Does it support both M8 and M10 bolt specifications? 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. UCkasayfy Bus Bar-4x5/16"Post Bus Bar-4x3/8"Post Battery Disconnect Switch Dual Battery lsolator Smart Battery Isolator Review: Well made product - Well made , at a great price. Exactly what I need to take care of my problem. Review: Worked perfectly, substantially large bus bar. - Extremely fine product... caution, these are quite large... check the dimensions so you know you have a place to mount them. ## 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 3/8″ (M10) 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 | B0CNYS4DC7 | | Best Sellers Rank | #66 in Distribution Connecting Blocks | | Brand Name | UCkasayfy | | Color | Black & Red | | Connector Type | Screw | | Current Rating | 300 Amps | | Customer Reviews | 4.6 out of 5 stars 352 Reviews | | Manufacturer | UCkasayfy | | Material | Nylon, Stainless Steel | | Material Type | Nylon, Stainless Steel | | Model | CB003-M10-2 | | Mounting Type | DIN Rail Mount | | Number Of Contacts | 4 | | Number Of Poles | 4 | | Number of Positions | 4 | | Part Number | CB003-M10-2 | | Specification Met | True | | Voltage | 12 Volts | ## 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/710MW-tN3jL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well made product *by T***D on December 26, 2025* Well made , at a great price. Exactly what I need to take care of my problem. ### ⭐⭐⭐⭐⭐ Worked perfectly, substantially large bus bar. *by D***T on March 25, 2026* Extremely fine product... caution, these are quite large... check the dimensions so you know you have a place to mount them. ### ⭐⭐⭐⭐ Cleaned up battery compartment *by T***L on September 30, 2025* Installed on my boat instead of having multiple wires on the battery. Cleaned up the process of changing my battery nicely. The are heavy duty and have a waterproof cover. Installed easy and have been working fine for a couple of months now ## 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 --- ## 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/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3](https://www.desertcart.com.ar/products/734498453-heavy-duty-bus-bar-300a-12v-power-distribution-block-3) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-11-02*