---
product_id: 3836387
title: "Blue Sea Systems On/Off Battery Isolator Switch With Locking Key, Red, 6006 m‑Series"
brand: "blue sea systems"
price: "€ 48.24"
currency: EUR
in_stock: true
reviews_count: 13
category: "Blue Sea Systems"
url: https://www.desertcart.it/products/3836387-blue-sea-systems-on-off-battery-isolator-switch-with-locking
store_origin: IT
region: Italy
---

# 300A heavy-duty current rating 3 versatile mounting options Ignition protected for engine rooms Blue Sea Systems On/Off Battery Isolator Switch With Locking Key, Red, 6006 m‑Series

**Brand:** blue sea systems
**Price:** € 48.24
**Availability:** ✅ In Stock

## Summary

> 🔴 Lock in Power, Unlock Peace of Mind

## Quick Answers

- **What is this?** Blue Sea Systems On/Off Battery Isolator Switch With Locking Key, Red, 6006 m‑Series by blue sea systems
- **How much does it cost?** € 48.24 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/3836387-blue-sea-systems-on-off-battery-isolator-switch-with-locking)

## 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, Always:** Removable knob and ignition protection prevent accidental power flow and allow safe engine room installation.
- • **Power Up with Confidence:** Handles up to 300 amps effortlessly, ensuring your marine or vehicle electrical system stays rock solid.
- • **Mount Anywhere, Fit Everywhere:** Three flexible mounting options (surface, rear, front) adapt seamlessly to tight or complex spaces.
- • **Built to Last in Harsh Environments:** Tin-plated copper studs resist corrosion and support multiple cable connections for durable, secure wiring.
- • **Effortless Control, Zero Compromise:** Tactile switch face and smooth ON/OFF action give you precise, reliable battery management every time.

## Overview

The Blue Sea Systems 6006 m-Series On/Off Battery Isolator Switch is a compact, high-performance marine-grade switch designed for single battery control. Rated for 300 amps and 48 volts, it features ignition protection for safe engine room use, versatile mounting options, and durable tin-plated copper studs that accept multiple cables. Its removable knob and tactile design prevent accidental power flow, making it a trusted choice for reliable, long-lasting battery management in boats, campers, and other DC-powered systems.

## Description

This compact battery switch is designed to manage a single battery connected to a single load group and supports flexible installation in a variety of panel or engine room layouts. Its small footprint and three available mounting options make it suitable for areas with limited space. The switch includes ignition protection for use in gasoline powered engine compartments, allowing safe placement in locations that require protected components. The tactile surface of the switch face and the removable knob help support operation in low light conditions and contribute to preventing unintended power flow during electrical system service. Tin plated copper terminal studs are built as a single piece and provide sufficient length for connecting multiple cables while supporting secure fastening. With its combination of protective features, connection capacity, and adaptable mounting options, this switch offers a practical solution for managing basic battery control needs in marine electrical systems.

Review: Rock-Solid, High-Quality Battery Switch You Can Trust - The Blue Sea Systems 6006 m-Series ON/OFF Battery Isolator Switch is exactly what you want in a critical electrical component: simple, reliable, and built to last. The build quality is outstanding — solid terminals, smooth but positive switching action, and materials that clearly hold up in a marine environment. Installation is straightforward, and the compact m-Series design makes it easy to fit even in tight battery compartments. What really stands out is the confidence it gives you. When it’s OFF, it’s truly OFF. When it’s ON, you know your system is connected without voltage drop or fuss. It handles high current loads effortlessly and stays cool under use. Typical Blue Sea attention to detail shows through: clear labeling, removable knob for safety, and excellent corrosion resistance. This is one of those products you install once and then never think about again — which is exactly what you want for a battery isolator. If you’re upgrading or replacing a battery switch, don’t hesitate. The 6006 is worth every penny and sets the standard for marine electrical hardware. Highly recommende
Review: Works perfectly for my application - This seems to be a high quality switch from a trusted brand. I use it to switch between two house batteries in my VW Westfalia Syncro Camper Van, or to combine both if needed. It also allows me to disconnect both batteries when needed, during wiring or electrical maintenance for example. I will say that it would have been nice to have a set of mounting bolts, however since it can be mounted in various configurations, I can see why they didn't include bolts since they'd have to supply several sets for the various mounting options. I mounted mine to a thin piece of wood in one of my cabinets initially with wood screws, but had to purchase some actual nuts/bolts/washers for a secure fit. Turning the knob to the various positions puts some serious torque on the unit, so a secure mounting job is required and the original wood screws in the pictures didn't last long. If you are mounting to a thicker panel, regular screws might work. Of course, you may want to mount it in one of the different configurations. Wiring is straight forward and I trust this will function for a very long time. Both batteries connect to the switch, which in turn powers a Blue Sea Systems ST Blade ATO/ATC Fuse Block, (https://amzn.to/2ZgpiPw - see picture) which in turn powers all the various and numerous 12v accessories in my van. This makes a great match for safely routing 12V throughout the van using two batteries. I'll update this review should the unit fail or give me problems in the future, but for now, I'm super happy. I could have spent a little less on a lesser known brand of switch, as there are many choices on desertcart, but Blue Sea Systems has a great reputation and I felt like it was worth a few extra bucks. I really don't want to burn down my van due to some cheap electrical switch!

## Features

- Multiple mounting options; can be installed on the surface, rear, or front of the panel
- Battery On-Off switch with removable knob provides added safety to prevent accidental or unwanted current in the DC system; this is handy during electrical system repairs
- Ignition protected and can be mounted in the engine room of gasoline powered boats
- One piece tin-plated copper studs are 7/8”long and accept multiple cables

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00445KFZ2 |
| Actuator Type | Push Button |
| Batteries | 1 Unknown batteries required. |
| Best Sellers Rank | #2,609 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Boat Battery Switches |
| Brand | Blue Sea Systems |
| Circuit Type | 2-way |
| Color | Red |
| Compatible Devices | Marine devices, DC-powered devices (up to 48V, 300A), construction equipment, emergency equipment |
| Connectivity Protocol | X-10 |
| Connector Type | Stud |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | ON/OFF |
| Current Rating | 300 Amps |
| Date First Available | December 12, 2001 |
| Department | unisex-adult |
| Global Trade Identification Number | 00632085060060 |
| International Protection Rating | IP66 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.2 ounces |
| Item dimensions L x W x H | 3 x 4 x 6 inches |
| Item model number | 6006 |
| Manufacturer | Blue Sea Systems |
| National Stock Number | 5930-01-561-3673 |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operating Voltage | 48 Volts |
| Operation Mode | manual |
| Product Dimensions | 3 x 4 x 6 inches |
| Terminal | Stud |
| UPC | 632085060060 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Boat |
| Wattage | 14400 watts |

## Product Details

- **Brand:** Blue Sea Systems
- **Connector Type:** Stud
- **Contact Type:** Normally Open
- **Current Rating:** 300 Amps
- **Item dimensions L x W x H:** 3 x 4 x 6 inches
- **Material:** Plastic
- **Operating Voltage:** 48 Volts
- **Operation Mode:** manual
- **Switch Type:** Rotary
- **Terminal:** Stud

## Images

![Blue Sea Systems On/Off Battery Isolator Switch With Locking Key, Red, 6006 m‑Series - Image 1](https://m.media-amazon.com/images/I/81rCa0M4c6L.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Rock-Solid, High-Quality Battery Switch You Can Trust
*by T***G on December 25, 2025*

The Blue Sea Systems 6006 m-Series ON/OFF Battery Isolator Switch is exactly what you want in a critical electrical component: simple, reliable, and built to last. The build quality is outstanding — solid terminals, smooth but positive switching action, and materials that clearly hold up in a marine environment. Installation is straightforward, and the compact m-Series design makes it easy to fit even in tight battery compartments. What really stands out is the confidence it gives you. When it’s OFF, it’s truly OFF. When it’s ON, you know your system is connected without voltage drop or fuss. It handles high current loads effortlessly and stays cool under use. Typical Blue Sea attention to detail shows through: clear labeling, removable knob for safety, and excellent corrosion resistance. This is one of those products you install once and then never think about again — which is exactly what you want for a battery isolator. If you’re upgrading or replacing a battery switch, don’t hesitate. The 6006 is worth every penny and sets the standard for marine electrical hardware. Highly recommende

### ⭐⭐⭐⭐⭐ Works perfectly for my application
*by V***K on February 14, 2021*

This seems to be a high quality switch from a trusted brand. I use it to switch between two house batteries in my VW Westfalia Syncro Camper Van, or to combine both if needed. It also allows me to disconnect both batteries when needed, during wiring or electrical maintenance for example. I will say that it would have been nice to have a set of mounting bolts, however since it can be mounted in various configurations, I can see why they didn't include bolts since they'd have to supply several sets for the various mounting options. I mounted mine to a thin piece of wood in one of my cabinets initially with wood screws, but had to purchase some actual nuts/bolts/washers for a secure fit. Turning the knob to the various positions puts some serious torque on the unit, so a secure mounting job is required and the original wood screws in the pictures didn't last long. If you are mounting to a thicker panel, regular screws might work. Of course, you may want to mount it in one of the different configurations. Wiring is straight forward and I trust this will function for a very long time. Both batteries connect to the switch, which in turn powers a Blue Sea Systems ST Blade ATO/ATC Fuse Block, (https://amzn.to/2ZgpiPw - see picture) which in turn powers all the various and numerous 12v accessories in my van. This makes a great match for safely routing 12V throughout the van using two batteries. I'll update this review should the unit fail or give me problems in the future, but for now, I'm super happy. I could have spent a little less on a lesser known brand of switch, as there are many choices on Amazon, but Blue Sea Systems has a great reputation and I felt like it was worth a few extra bucks. I really don't want to burn down my van due to some cheap electrical switch!

### ⭐⭐⭐⭐⭐ Best quality I have found
*by J***I on September 2, 2025*

Great support and instructions available, built very well and exceeds my expectation of quality. Easy to wire and mount, just wish it came with mounting hardware like screws or nuts and bolts. Best value for my money with such high standards of quality in a switch that is used very frequently. Really makes my battery life last with the ability to use as a disconnect switch.

## Frequently Bought Together

- Blue Sea Systems 6006 m-Series Battery Switch ON/OFF with Knob, Red
- Blue Sea Systems 5026 ST Blade Fuse Block 12 Circuit with Ground and Cover
- Blue Sea Systems 5191 Fuse Block Terminal 30-300 AMP

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-03*