--- product_id: 83092661 title: "Blue Sea Systems MRBF Terminal Fuse Blocks" brand: "blue sea systems" price: "€ 119.85" currency: EUR in_stock: true reviews_count: 6 category: "Blue Sea Systems" url: https://www.desertcart.it/products/83092661-blue-sea-systems-mrbf-terminal-fuse-blocks store_origin: IT region: Italy --- # 300A max current 58V DC max voltage Compact 3/8" mounting Blue Sea Systems MRBF Terminal Fuse Blocks **Brand:** blue sea systems **Price:** € 119.85 **Availability:** ✅ In Stock ## Summary > ⚡ Fuse your circuits with confidence — compact power, marine tough! ## Quick Answers - **What is this?** Blue Sea Systems MRBF Terminal Fuse Blocks by blue sea systems - **How much does it cost?** € 119.85 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/83092661-blue-sea-systems-mrbf-terminal-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 - • **Ignition Ready:** Ignition protected when paired with MRBF fuses for reliable starts - • **Stack & Secure:** Innovative isolated stud design allows easy terminal stacking - • **Weatherproof Warrior:** Built to withstand harsh marine environments without fail - • **Powerhouse Protection:** Handles up to 300 amps per block for robust circuit safety - • **Accidental Short Shield:** Insulating cap prevents dangerous shorts, keeping your system safe ## Overview Blue Sea Systems MRBF Terminal Fuse Blocks deliver high-amperage DC circuit protection up to 300A and 58V, designed with a compact, stackable stud layout and weatherproof construction. Ideal for marine and harsh environment applications, these fuse blocks feature insulating caps to prevent shorts and are ignition protected when used with MRBF fuses. Fuses sold separately. ## Description New isolated stud design uses standard M8 (5/16") hardware and permits stacking of terminals Compact, high-amp fuse-Appropriate for DC Main, inverter, windlass and bow thruster circuit protection Provides high current protection in tight space constraints. Review: Way too expensive for what it is... - Ridiculously expensive. Well made product but you have to question the cost. Quality costs... unless you're being ripped off! Review: Durable, strong, lots of use cases for all batteries above 100 Ah - Great product. These are a good value, easy to install, and a convenient size for the post of nearly all LFP batteries. They're also built like a tank, and therefore suitable for a wide range of use cases. I fuse all of my LFP batteries I find it useful to have two fuses on the block for larger batteries (200 and 300 Ah) because they often run circuits with higher and lower current drain, so I want separate fault protection for the distribution blocks on those circuits. Note: I use only Buss fuses because I don't trust low-cost knock-offs to blow at their rated current based on testing and research I have seen. ## 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-cockpit 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 | 33,720 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 48 in Deck Hardware | | Brand | Blue Sea Systems | | Colour | Double Fuse | | Connector Type | Screw terminal | | Connector type | Screw terminal | | Country Of Origin | USA | | Current Rating | 300 Amps | | Current rating | 300 Amps | | Customer Reviews | 4.6 out of 5 stars 268 Reviews | | 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 centimetres | | Item Highlight | Two fuse positions; 58V DC max; insulating cap; mounts to 3/8-inch stud; fuses sold separately | | 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 | | Manufacturer Part Number | 2151 | | Material | Plastic | | Model Number | 2151 | | Mounting Type | 3/8 inch threaded mount | | Mounting type | 3/8 inch threaded mount | | Number Of Contacts | 2 | | Number Of Poles | 2 | | Number of Items | 1 | | Number of Positions | 2 | | Number of contacts | 2 | | Specification Met | Unspecified Standards Meet | | UPC | 632085021511 | | Unit Count | 1.0 count | | Voltage | 58 Volts (DC) | ## Product Details - **Brand:** Blue Sea Systems - **Colour:** Double Fuse - **Connector type:** Screw terminal - **Current rating:** 300 Amps - **Material:** Plastic - **Mounting type:** 3/8 inch threaded mount - **Number of contacts:** 2 - **Number of poles:** 2 - **Product dimensions:** 6.4W x 8.9H centimetres - **Voltage:** 58 Volts (DC) ## Images ![Blue Sea Systems MRBF Terminal Fuse Blocks - Image 1](https://m.media-amazon.com/images/I/61iQg3HoniL.jpg) ![Blue Sea Systems MRBF Terminal Fuse Blocks - Image 2](https://m.media-amazon.com/images/I/41aMH9iK-ZL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐ Way too expensive for what it is... *by P***K on 16 January 2026* Ridiculously expensive. Well made product but you have to question the cost. Quality costs... unless you're being ripped off! ### ⭐⭐⭐⭐⭐ Durable, strong, lots of use cases for all batteries above 100 Ah *by R***Y on 20 August 2026* Great product. These are a good value, easy to install, and a convenient size for the post of nearly all LFP batteries. They're also built like a tank, and therefore suitable for a wide range of use cases. I fuse all of my LFP batteries I find it useful to have two fuses on the block for larger batteries (200 and 300 Ah) because they often run circuits with higher and lower current drain, so I want separate fault protection for the distribution blocks on those circuits. Note: I use only Buss fuses because I don't trust low-cost knock-offs to blow at their rated current based on testing and research I have seen. ### ⭐⭐⭐⭐⭐ Bon achat *by Y***N on 1 April 2026* Produit de qualité ## 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.it/products/83092661-blue-sea-systems-mrbf-terminal-fuse-blocks](https://www.desertcart.it/products/83092661-blue-sea-systems-mrbf-terminal-fuse-blocks) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-09-20*