--- product_id: 254439550 title: "MRBF Surface and Terminal Mount Fuse Blocks" brand: "blue sea systems" price: "COP 308027" currency: COP in_stock: true reviews_count: 5 url: https://www.desertcart.co/products/254439550-mrbf-surface-and-terminal-mount-fuse-blocks store_origin: CO region: Colombia --- # 300A max current 58V DC max voltage Compact 3/8" mounting MRBF Surface and Terminal Mount Fuse Blocks **Brand:** blue sea systems **Price:** COP 308027 **Availability:** ✅ In Stock ## Summary > ⚡ Fuse your circuits with confidence — power, protection, perfection! ## Quick Answers - **What is this?** MRBF Surface and Terminal Mount Fuse Blocks by blue sea systems - **How much does it cost?** COP 308027 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/254439550-mrbf-surface-and-terminal-mount-fuse-blocks) ## Best For - blue sea systems enthusiasts ## Why This Product - Trusted blue sea systems brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Ignition protected with insulating cap to prevent accidental shorts - • **Space-Savvy Design:** Compact 3/8" mounting fits tight spaces with ease - • **Easy Identification:** Clip-on cover with label recesses for quick circuit labeling - • **Marine-Grade Durability:** Weatherproof and UV-stabilized for harsh marine environments - • **High-Amperage Powerhouse:** Handles up to 300A per block for robust circuit protection ## Overview Blue Sea Systems MRBF Surface and Terminal Mount Fuse Blocks deliver reliable, high-amperage DC circuit protection up to 300A and 58V. Designed with marine-grade materials, these weatherproof, ignition-protected fuse blocks mount compactly on 3/8" posts or busbars, featuring insulating caps and clip-on covers for enhanced safety and easy circuit identification. Ideal for demanding marine and harsh environment applications. ## Description Marine-grade, ignition-protected fuse blocks accommodate high amperage MRBF fuses. Suitable for protecting DC main, inverter, windlass, and bow thruster circuits. Mounts on a 3/8" battery post, battery switch or busbar, allowing for easy installation in tight space constraints and satisfies ABYC 7" circuit protection rule. Includes insulating cap to prevent accidental shorts. Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection. Utilizes marine-grade stainless steel and UV-stabilized plastics, and are ignition protected. The independent source fuse block (part number 5194) is ideal for 3 output battery chargers. The common source fuse block (part number 5196) provides 3 loads from a single source. Clip-on cover insulates terminal connections and includes label recesses for easy circuit identification. ## Features - Voltage Max Operating: 58V DC, Amps Max Operating: 300A per block, Terminal Fuses Avail.: 30A-300A, Terminal Stud Size: 5/16"-18 (8mm), Mounting Hole Size: #10 (5mm)3/8" - Compact, high-amp fuse—appropriate for DC Main, inverter, windlass, and bow thruster circuit protection - Weatherproof – suitable for small open-pit boats and other harsh environments - Insulating cap prevents accidental shorts - Ignition protected when used with MRBF fuses.Fuses sold separately ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B002INJXO6 | | Best Sellers Rank | #146,281 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #364 in Fuses & Holders | | Brand Name | Blue Sea Systems | | Color | Double Fuse | | Connector Type | Screw | | Country Of Origin | Taiwan | | Current Rating | 300 Amps | | Customer Reviews | 4.6 4.6 out of 5 stars (241) 4.6 out of 5 stars | | Global Trade Identification Number | 00632085021511 | | Included Components | Blue Sea Systems 2151-BSS Dual MRBF Terminal Fuse Block - 30 to 300A | | Item Dimensions W X H | 6.4W x 8.9H centimeters | | Item Type Name | Blue Sea Systems 2151-BSS Dual MRBF Terminal Fuse Block - 30 to 300A | | Item Weight | 4.8 Ounces | | Manufacturer | Blue Sea Systems | | Material Type | Plastic | | Model | 2151 | | Mounting Type | 3/8 inch threaded mount | | Number Of Contacts | 2 | | Number Of Poles | 2 | | Number Of Positions | 2 | | Part Number | 2151 | | Specification Met | Unspecified Standards Meet | | Unit Count | 1 Count | | Upc | 632085021511 | | Voltage | 58 Volts (DC) | ## Product Details - **Connector type:** Screw - **Current rating:** 300 Amps - **Material:** Plastic - **Mounting type:** 3/8 inch threaded mount - **Number of contacts:** 2 ## Images ![MRBF Surface and Terminal Mount Fuse Blocks - Image 1](https://m.media-amazon.com/images/I/51F-KPpeh0S.jpg) ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Bon achat *by on Reviewed in Canada 1 April 2026* Produit de qualité ### ⭐⭐⭐⭐⭐ Highest Quality *by on Reviewed in the United States 11 March 2026* I have done several DIY solar projects. For safety, I always put a proper sized fuse at the battery. With this MRBF Terminal Fuse Block, I can simply mount the fuse right to the battery post. It is simple to mount, small and very high quality. I only needed a single fuse block, but they had a super special where the dual fuse block was way less expensive then a single fuse block. So I bought the double. This is a very well designed piece if equipment. The build quality is superb and it is made for harsh salt water environments. ### ⭐⭐⭐⭐⭐ Schlanke Installation *by on Reviewed in Germany 18 September 2024* Sehr gutes Produkt, ermöglicht eine schlanke Elektroinstallation mit dem Nachteil, daß die Sicherungen ihren Preis haben. Für mich aber trotzdem angenehmer, als eine extra MEGAfuse-Box plus Kabel einzubauen. ## Frequently Bought Together - Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block - 30 to 300A - Blue Sea Systems Terminal Fuses --- ## 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.co/products/254439550-mrbf-surface-and-terminal-mount-fuse-blocks](https://www.desertcart.co/products/254439550-mrbf-surface-and-terminal-mount-fuse-blocks) --- *Product available on Desertcart Colombia* *Store origin: CO* *Last updated: 2026-07-17*