--- product_id: 10705401 title: "Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block - 30 to 300A" brand: "blue sea systems" price: "€ 78.81" currency: EUR in_stock: true reviews_count: 13 category: "Blue Sea Systems" url: https://www.desertcart.com.cy/products/10705401-blue-sea-systems-2151-dual-mrbf-terminal-fuse-block-30 store_origin: CY region: Cyprus --- # 58V max DC voltage 300A max current per block Compact 3/8" mounting Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block - 30 to 300A **Brand:** blue sea systems **Price:** € 78.81 **Availability:** ✅ In Stock ## Summary > ⚡ Fuse your circuits with confidence — compact power, built to last! ## Quick Answers - **What is this?** Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block - 30 to 300A by blue sea systems - **How much does it cost?** € 78.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/10705401-blue-sea-systems-2151-dual-mrbf-terminal-fuse-block-30) ## 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 Safe:** Ignition protected when paired with MRBF fuses for reliable vehicle and marine use. - • **Space-Savvy Design:** Compact footprint fits tight spaces without compromising performance. - • **Stackable Terminals:** Innovative isolated stud design allows easy stacking with standard M8 hardware. - • **Powerhouse Protection:** Handles up to 58V DC and 300A per block for robust circuit safety. - • **Weatherproof Durability:** Built to withstand harsh marine and open-cockpit environments. ## Overview The Blue Sea Systems 2151 fuse block offers high-amp, compact circuit protection up to 58V DC and 300A per block. Its weatherproof, ignition-protected design with stackable terminals makes it ideal for marine, RV, and solar applications where space and reliability are critical. ## 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: Good design and well made - This compact, well-made design worked perfectly in my fifth-wheel RV. I made the switch from lead acid to LiFePO4 battery power with solar charging. I needed a compact device to provide a primary fused circuit breaker right at my 300 Sh battery. This does the job of providing protection at a reasonable cost. Review: Highest Quality - 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. ## 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 | #11,286 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Fuse Blocks (Tools & Home Improvement) #4 in Fuse Blocks (Industrial & Scientific) | | Brand Name | Blue Sea Systems | | Color | Double Fuse | | Connector Type | Screw | | Current Rating | 300 Amps | | Customer Reviews | 4.6 4.6 out of 5 stars (230) | | Global Trade Identification Number | 00632085021511 | | Included Components | Item | | Item Dimensions W x H | 2.5"W x 3.5"H | | Item Type Name | fuse boxes | | 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 Positions | 2 | | Part Number | 2151 | | UPC | 632085021511 | | Voltage | 58 Volts (DC) | | Warranty Description | As labeled | ## Product Details - **Brand:** Blue Sea Systems - **Color:** Double Fuse - **Connector Type:** Screw - **Current Rating:** 300 Amps - **Manufacturer:** Blue Sea Systems - **Material:** Plastic - **Mounting Type:** 3/8 inch threaded mount - **Number Of Contacts:** 2 - **Product Dimensions:** 2.5"W x 3.5"H - **Voltage:** 58 Volts (DC) ## Images ![Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block - 30 to 300A - Image 1](https://m.media-amazon.com/images/I/51F-KPpeh0S.jpg) ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good design and well made *by M***N on January 2, 2026* This compact, well-made design worked perfectly in my fifth-wheel RV. I made the switch from lead acid to LiFePO4 battery power with solar charging. I needed a compact device to provide a primary fused circuit breaker right at my 300 Sh battery. This does the job of providing protection at a reasonable cost. ### ⭐⭐⭐⭐⭐ Highest Quality *by S***E on March 11, 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. ### ⭐⭐⭐⭐⭐ Great Quality, high price. *by H***I on January 28, 2025* This worked great on my 48v battery bank of 8 12v 280 AH ecoworthy batteries. Save so much wire and headaches with the bussbars. Note: do not get the cheaper bojack fuses as they have not been reliable in my experience. I did not like spending $18 for the better fuse but had to anyway… ## 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.com.cy/products/10705401-blue-sea-systems-2151-dual-mrbf-terminal-fuse-block-30](https://www.desertcart.com.cy/products/10705401-blue-sea-systems-2151-dual-mrbf-terminal-fuse-block-30) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-04-24*