---
product_id: 10705401
title: "2151 Dual MRBF Terminal Fuse Block - 30 to 300A"
brand: "blue sea systems"
price: "€ 75.82"
currency: EUR
in_stock: true
reviews_count: 13
category: "Blue Sea Systems"
url: https://www.desertcart.com.cy/products/10705401-2151-dual-mrbf-terminal-fuse-block-30-to-300a
store_origin: CY
region: Cyprus
---

# 300A max current 58V DC max voltage Compact 2.5"x3.5" design 2151 Dual MRBF Terminal Fuse Block - 30 to 300A

**Brand:** blue sea systems
**Price:** € 75.82
**Availability:** ✅ In Stock

## Summary

> ⚡ Fuse your circuits, not your style — compact power with marine-grade toughness!

## Quick Answers

- **What is this?** 2151 Dual MRBF Terminal Fuse Block - 30 to 300A by blue sea systems
- **How much does it cost?** € 75.82 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/10705401-2151-dual-mrbf-terminal-fuse-block-30-to-300a)

## 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:** Insulating cap prevents accidental shorts, ensuring peace of mind
- • **Ignition Ready:** Ignition protected when paired with MRBF fuses for reliable starts
- • **Stack & Save Space:** Innovative isolated stud design allows terminal stacking in tight spots
- • **Weatherproof Warrior:** Built to withstand harsh marine and open-cockpit environments
- • **Powerhouse Protection:** Handles up to 300A per block for serious current demands

## Overview

The Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block delivers robust 300A current protection at up to 58V DC in a compact 2.5"x3.5" weatherproof design. Its isolated stud design supports terminal stacking, making it ideal for tight installations on boats, RVs, and industrial setups. With safety features like an insulating cap and ignition protection, it’s engineered for reliable, high-performance circuit safeguarding in demanding environments.

## 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: Buy once. Buy right. Buy this one. - High quality, easy to install. It's all about the fuse now to see if this works. Hopefully it never trips.

## 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 | #14,458 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Fuse Blocks (Tools & Home Improvement) #5 in Fuse Blocks (Industrial & Scientific) |
| Brand | Blue Sea Systems |
| Color | Double Fuse |
| Connector Type | Screw |
| Current Rating | 300 Amps |
| Date First Available | March 15, 2007 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00632085021511 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.8 ounces |
| Item model number | 2151 |
| 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 |
| UPC | 632085021511 |
| Voltage | 58 Volts (DC) |

## 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

![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.

### ⭐⭐⭐⭐⭐ Buy once. Buy right. Buy this one.
*by H***L on January 16, 2026*

High quality, easy to install. It's all about the fuse now to see if this works. Hopefully it never trips.

### ⭐⭐⭐⭐⭐ Genuine Eaton part.
*by J***. on July 15, 2025*

Why did you pick this product vs others?: It's the highest rated seller for this product. Genuine Eaton part. Photos show it having fuses but it does not come with fuses. Safety: These should be standard on all electric carts and scooters. These should also be standard on anything with long runs of battery cable.

## Frequently Bought Together

- Blue Sea Systems 2151 Dual MRBF Terminal Fuse Block - 30 to 300A
- Blue Sea Systems Terminal Fuses

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**Shop now:** [https://www.desertcart.com.cy/products/10705401-2151-dual-mrbf-terminal-fuse-block-30-to-300a](https://www.desertcart.com.cy/products/10705401-2151-dual-mrbf-terminal-fuse-block-30-to-300a)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-02*