---
product_id: 26826874
title: "Terminal Fuses"
brand: "blue sea systems"
price: "S/.137"
currency: PEN
in_stock: true
reviews_count: 13
category: "Blue Sea Systems"
url: https://www.desertcart.pe/products/26826874-terminal-fuses
store_origin: PE
region: Peru
---

# 200A max current IP66 water jet protection 58V DC max voltage Terminal Fuses

**Brand:** blue sea systems
**Price:** S/.137
**Availability:** ✅ In Stock

## Summary

> 🔌 Power up with confidence—safety that’s always visible, reliable, and built to last!

## Quick Answers

- **What is this?** Terminal Fuses by blue sea systems
- **How much does it cost?** S/.137 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/26826874-terminal-fuses)

## 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

- • **Crystal Clear Fuse Status:** Integrated visible window lets you instantly spot a blown fuse—no guesswork, no downtime.
- • **Ultimate Arc-Flash Defense:** 10,000 AIC rating at 14V DC ensures superior interruption capacity to prevent dangerous electrical arcs.
- • **Unmatched 200A Power Handling:** Engineered to safeguard your high-capacity battery banks with a robust 200 Amp rating.
- • **Built for Marine & Safety Standards:** Ignition protected and ABYC-compliant, perfect for gasoline-powered boats and critical DC circuits.
- • **Seamless Integration with Fuse Blocks:** Designed exclusively for use with Blue Sea Terminal Fuse Blocks (PN 5191 or PN 2151) for optimal safety and performance.

## Overview

Blue Sea Systems Terminal Fuses deliver industry-leading 200 Amp current protection at up to 58V DC, featuring a visible blown fuse indicator and a 10,000 AIC rating that meets ABYC standards. Ignition protected and IP66 rated, these fuses are engineered for marine and high-demand battery bank applications, ensuring unmatched safety and peace of mind when paired with compatible Blue Sea fuse blocks.

## Description

Terminal Fuse. Color: Light Green. Amperage: 30A. Interrupt Rating satisfies ABYC requirements for DC Main circuit protection on large battery banks. Ignition protected-safe for installation aboard gasoline powered boats. Clear window-visual indication of blown condition. Must be used with terminal fuse block

Review: Blew within seconds! Good quality - Worked great. Blew the fuse while I was installing it!
Review: DIYers for lithium battery builds remember it’s all about the AIC!! - This is a great product. Many complain about the price. But it’s a critical safety measure for life and property safety so is $80 for a fuse and holder worth getting versus some cheap Chinese thing that if the absolute worst happens (internal battery failure/ thermal runaway conditions) you want to bet your life and/or home on? Yes we have other safety devices, BMSs etc…but if you don’t plan for the worst (highly unlikely) scenario then you’re a gambler. IMHO Remember the AIC rating is super important in fuses. That’s what going to prevent an arc from forming and allowing massive current to flow not to mention it can act as an ignition source for the hydrogen gas LifePo4 batteries vent. No arc less chance of fire. With these terminal fuses keep in mind the AIC drops as your pack voltage goes up from 12v to 24/48v. I build both. The picture is of a 16s 48v LFP pack. The terminal fuse is 3rd or 4th in line of safety measures right from the start. It doesn’t have the AIC @48v to handle a serious failure, hence it’s just a part of the safety system. #1 a must - class T fuse with an AIC rating of at least 20k connected directly to the battery main positive. If you can find a 50K AIC even better. #2 BMS - great when they work but even the highest quality ones can fail you. Not something to depend on solely. #3 DC breaker - this is a cheap junk Chinese breaker that I have zero trust in. For me it’s merely a cutoff switch to the terminals. It came as part of the metal enclosure kit. I can’t find a quality breaker that fits in there unfortunately. #4 These terminal fuses. Fan to vent gas from the case with a VOC sensor I built to alert me if hydrogen gas is being vented. Also added temperature sensors on various parts of the metal case to alert me (also connected to a microcontroller I built). I changed the default settings on the BMS for short circuit amps to a much much lower numbers same with temperature settings. Since my packs pull very minuscule amount of power I’ll never come close to the 100a the bms/pack is rated for. From there it’s again a series of disconnect switches, class T fuses to the inverter. For my “worst case scenario nothing stopped an internal failure” I have CellBlockEX pellets to pour on top of the box. I also have a Lifepo4 designed fire extinguisher (yes they are different due to the LFP chemistry and the ability of LFP batteries to self ignite since they produce all the elements needed for fire on their own. I also have canisters of Stat-X First Responder Aerosol Fire Suppression to toss at a fire and run away. Is this all overkill many would say yes. I would ask that same question to them if they skimped out on parts and lost property or god forbid life. I bet I would get a different answer then. Be safe folks. While super rare, you better have measures in place to deal with the super rare possibilities. Or like I said maybe you’re a gambler. Up to you what you need to feel safe and sleep at night. Class T fuses need to be in place sometimes a lot depends on your setup. Blue sea systems gets an A+ from me. I know you are paying more for the name but I’m ok with it. YMMV! Happy DIYing! Free energy from the sun!!

## Features

- Pack of 1, 200A terminal fuse, Max voltage: 58V DC
- Visible indication of blown condition
- 10,000 AIC at 14V DC satisfies ABYC requirements for DC Main circuit protection on large battery banks
- Requires the use of Terminal Fuse Blocks PN 5191 or PN 2151—do not mount the fuse directly to the battery terminal
- Ignition protected—safe for installation aboard gasoline powered boats. IP66 - Protected against powerful water jets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 200 Amps |
| ASIN | B001E4F3J4 |
| Best Sellers Rank | #3,868 in Automotive ( See Top 100 in Automotive ) #23 in Automotive Fuses #186 in Fuses |
| Brand | Blue Sea Systems |
| Brand Name | Blue Sea Systems |
| Color | blue/sea |
| Current Rating | 200 Amps |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,259) |
| Date First Available | October 1, 2001 |
| Fishing Technique | Any |
| Included Components | Fuse |
| Item Dimensions LxWxH | 4 x 3 x 1 inches |
| Item Package Dimensions L x W x H | 3.11 x 1.46 x 0.87 inches |
| Item Weight | 0.05 Pounds |
| Item dimensions L x W x H | 4 x 3 x 1 inches |
| Manufacturer | Blue Sea Systems |
| Material | Plastic |
| Model Name | MRBF |
| Mounting Type | Through-Hole Mount |
| Number of Items | 1 |
| Package Weight | 0.28 Kilograms |
| Part Number | 5187 |
| Size | 200 Amp |
| Specification Met | Abyc |
| Style | 200a |
| Suggested Users | mens |
| UPC | 632085051877 |
| Unit Count | 1.0 Count |
| Voltage | 58 Volts |
| Warranty Description | Manufacturer Limited |

## Product Details

- **AC Adapter Current:** 200 Amps
- **Brand:** Blue Sea Systems
- **Item dimensions L x W x H:** 4 x 3 x 1 inches
- **Material:** Plastic
- **Voltage:** 58 Volts

## Images

![Terminal Fuses - Image 1](https://m.media-amazon.com/images/I/51I86JdZ70S.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Blew within seconds! Good quality
*by B***L on November 29, 2025*

Worked great. Blew the fuse while I was installing it!

### ⭐⭐⭐⭐⭐ DIYers for lithium battery builds remember it’s all about the AIC!!
*by F***D on May 24, 2024*

This is a great product. Many complain about the price. But it’s a critical safety measure for life and property safety so is $80 for a fuse and holder worth getting versus some cheap Chinese thing that if the absolute worst happens (internal battery failure/ thermal runaway conditions) you want to bet your life and/or home on? Yes we have other safety devices, BMSs etc…but if you don’t plan for the worst (highly unlikely) scenario then you’re a gambler. IMHO Remember the AIC rating is super important in fuses. That’s what going to prevent an arc from forming and allowing massive current to flow not to mention it can act as an ignition source for the hydrogen gas LifePo4 batteries vent. No arc less chance of fire. With these terminal fuses keep in mind the AIC drops as your pack voltage goes up from 12v to 24/48v. I build both. The picture is of a 16s 48v LFP pack. The terminal fuse is 3rd or 4th in line of safety measures right from the start. It doesn’t have the AIC @48v to handle a serious failure, hence it’s just a part of the safety system. #1 a must - class T fuse with an AIC rating of at least 20k connected directly to the battery main positive. If you can find a 50K AIC even better. #2 BMS - great when they work but even the highest quality ones can fail you. Not something to depend on solely. #3 DC breaker - this is a cheap junk Chinese breaker that I have zero trust in. For me it’s merely a cutoff switch to the terminals. It came as part of the metal enclosure kit. I can’t find a quality breaker that fits in there unfortunately. #4 These terminal fuses. Fan to vent gas from the case with a VOC sensor I built to alert me if hydrogen gas is being vented. Also added temperature sensors on various parts of the metal case to alert me (also connected to a microcontroller I built). I changed the default settings on the BMS for short circuit amps to a much much lower numbers same with temperature settings. Since my packs pull very minuscule amount of power I’ll never come close to the 100a the bms/pack is rated for. From there it’s again a series of disconnect switches, class T fuses to the inverter. For my “worst case scenario nothing stopped an internal failure” I have CellBlockEX pellets to pour on top of the box. I also have a Lifepo4 designed fire extinguisher (yes they are different due to the LFP chemistry and the ability of LFP batteries to self ignite since they produce all the elements needed for fire on their own. I also have canisters of Stat-X First Responder Aerosol Fire Suppression to toss at a fire and run away. Is this all overkill many would say yes. I would ask that same question to them if they skimped out on parts and lost property or god forbid life. I bet I would get a different answer then. Be safe folks. While super rare, you better have measures in place to deal with the super rare possibilities. Or like I said maybe you’re a gambler. Up to you what you need to feel safe and sleep at night. Class T fuses need to be in place sometimes a lot depends on your setup. Blue sea systems gets an A+ from me. I know you are paying more for the name but I’m ok with it. YMMV! Happy DIYing! Free energy from the sun!!

### ⭐⭐⭐⭐⭐ Quality you can depend on.
*by U***C on November 19, 2025*

It meets the expectations on both quality of manufacturing and functionality. Its a Bussmann. Enough said .

## Frequently Bought Together

- Blue Sea Systems Terminal Fuses
- Blue Sea Systems MRBF Terminal Fuse Blocks

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-01-29*