---
product_id: 3560749
title: "7721 Fuse Block Safety SEA/AMG"
brand: "blue sea systems"
price: "€ 82.28"
currency: EUR
in_stock: true
reviews_count: 12
category: "Blue Sea Systems"
url: https://www.desertcart.com.cy/products/3560749-7721-fuse-block-safety-sea-amg
store_origin: CY
region: Cyprus
---

# 300A max current rating Sealed cover guards against harsh marine elements Ignition protected for marine safety 7721 Fuse Block Safety SEA/AMG

**Brand:** blue sea systems
**Price:** € 82.28
**Availability:** ✅ In Stock

## Summary

> 🛥️ Power your adventures with marine-grade fuse protection!

## Quick Answers

- **What is this?** 7721 Fuse Block Safety SEA/AMG by blue sea systems
- **How much does it cost?** € 82.28 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/3560749-7721-fuse-block-safety-sea-amg)

## 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

- • **Rugged Sealed Cover:** Defends your fuses from saltwater, moisture, and corrosion 🌧️
- • **Compact & Durable Design:** Iron construction with DIN rail mount fits seamlessly in tight spaces 🔧
- • **Versatile Power Handling:** Supports up to 300 amps, perfect for solar, audio, and marine systems 🔋
- • **ABYC/USCG Insulation Compliance:** Meets top marine safety standards for peace of mind ✅
- • **Marine-Grade Ignition Protection:** Safely install aboard gasoline or diesel boats without worry ⚓

## Overview

The Blue Sea Systems 7721 Fuse Block Safety SEA/AMG is a robust, ignition-protected fuse holder designed specifically for marine environments. Featuring a sealed cover that shields fuses from moisture and corrosion, it meets ABYC and USCG insulation standards. Rated for up to 300 amps and built with durable iron housing, it’s ideal for gasoline or diesel boats, solar setups, and car audio systems, ensuring reliable, safe power distribution on every journey.

## Description

Ignition protected for installation aboard gasoline or diesel powered boats Sealed cover protects fuses from the harsh marine environment.

Review: Great quality - Used for my 92 cummins. Worked perfect for replacing the terrible fusable link.
Review: Blue Sea Systems Fuse holder is a well made product that looks great and works amazing! - Great for my solar, car audio and boating needs, what a well built fuse holder. Highly Recommend!

## Features

- Ignition protected for installation aboard gasoline or diesel powered boats
- Sealed cover protects fuses from the harsh marine environment
- Insulating cover satisfies ABYC/USCG insulation requirements

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004ZJ0WEQ |
| Best Sellers Rank | #229,562 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #18 in Fuse Blocks (Tools & Home Improvement) |
| Brand | Blue Sea Systems |
| Brand Name | Blue Sea Systems |
| Color | black |
| Connector Type | Screw |
| Current Rating | 300 Amps |
| Customer Reviews | 4.8 4.8 out of 5 stars (144) |
| Date First Available | April 26, 2011 |
| Global Trade Identification Number | 00632085077211 |
| Included Components | FUSE BLOCK SAFETY SEA/AMG |
| Item Dimensions LxWxH | 7.75 x 4 x 2 inches |
| Item Package Dimensions L x W x H | 7.24 x 3.94 x 1.85 inches |
| Item Weight | 0.15 Pounds |
| Manufacturer | Blue Sea Systems |
| Material | iron |
| Model Name | FUSE BLOCK SAFETY SEA/AMG |
| Mounting Type | DIN Rail Mount |
| Number Of Contacts | 1 |
| Number Of Poles | 1 |
| Number of Items | 1 |
| Package Weight | 0.22 Kilograms |
| Part Number | 7721-BSS |
| Product Dimensions | 4"W x 2"H |
| Specification Met | Abyc/Uscg Insulation Requirements |
| Style | Music |
| UPC | 632085077211 696582459314 995889633541 611104332241 012302849973 |
| Voltage | 32 Volts |
| Warranty Description | LIMITED WARRANTY |

## Product Details

- **Brand:** Blue Sea Systems
- **Color:** black
- **Connector Type:** Screw
- **Current Rating:** 300 Amps
- **Material:** iron
- **Mounting Type:** DIN Rail Mount
- **Number Of Contacts:** 1
- **Number Of Poles:** 1
- **Product Dimensions:** 4"W x 2"H
- **Voltage:** 32 Volts

## Images

![7721 Fuse Block Safety SEA/AMG - Image 1](https://m.media-amazon.com/images/I/51jiE-v4FGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality
*by A***R on November 4, 2025*

Used for my 92 cummins. Worked perfect for replacing the terrible fusable link.

### ⭐⭐⭐⭐⭐ Blue Sea Systems Fuse holder is a well made product that looks great and works amazing!
*by G***O on August 31, 2025*

Great for my solar, car audio and boating needs, what a well built fuse holder. Highly Recommend!

### ⭐⭐⭐⭐⭐ Quality. Buy once cry once.
*by D***T on October 28, 2023*

Bought this after a super cheap fuse holder I had arced out where I had it mounted in my Jeeps engine bay after doing a full battery cable upgrade. The cheap fuse holder lasted a few years but after finding it half melted and seeing that the stud (just a bolt in epoxy resin) had arced out on my inner fender well because the plastic was so thin I immediately counted my blessings it didn't burn my vehicle to the ground and jumped on here to get a Blue Sea Systems set up. I went with this one as it seemed to be the most robust and I loved that the fuse is encased with a weather tight seal too. Thing is primo, but you do pay for it. Both in unit costs + specific fuses but after what I dealt with I don't even care for the peace of mind. EDIT AFTER LOTS OF MILES OF OFFROADING: Unit is holding up even better than I expected. The sealed off waterproof section where the fuse goes is the best feature to this thing, it's kept out all the elements which is great as my Jeep has hood spacers which lets in more dust than stock hoods do and it sees lots and lots of miles of offroading trails and dirt roads. Blue Sea products have yet to let me down with anything from them I've put in my rig.

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**Shop now:** [https://www.desertcart.com.cy/products/3560749-7721-fuse-block-safety-sea-amg](https://www.desertcart.com.cy/products/3560749-7721-fuse-block-safety-sea-amg)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-22*