---
product_id: 57324001
title: "Blue Sea Systems - Battery Switch ON/Off AFD"
brand: "blue sea systems"
price: "€ 159.57"
currency: EUR
in_stock: true
reviews_count: 8
category: "Blue Sea Systems"
url: https://www.desertcart.at/products/57324001-blue-sea-systems-battery-switch-on-off-afd
store_origin: AT
region: Austria
---

# 350A continuous current Switch while engine runs Tinned copper terminals Blue Sea Systems - Battery Switch ON/Off AFD

**Brand:** blue sea systems
**Price:** € 159.57
**Availability:** ✅ In Stock

## Summary

> 🔋 Master your power flow with Blue Sea’s unstoppable battery switch!

## Quick Answers

- **What is this?** Blue Sea Systems - Battery Switch ON/Off AFD by blue sea systems
- **How much does it cost?** € 159.57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/57324001-blue-sea-systems-battery-switch-on-off-afd)

## 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

- • **Durable Copper Core:** Single-piece tinned copper terminals maintain shape and conductivity over time.
- • **IP66 Rated Protection:** Built to withstand harsh marine and automotive environments.
- • **Compact Panel Mount Design:** Sleek 10x16x22 cm footprint fits perfectly in your control panel.
- • **Power Through with 350 Amps:** Handles heavy-duty petrol & diesel engines effortlessly.
- • **Seamless Switching On The Fly:** Change battery connections without risking alternator damage.

## Overview

The Blue Sea Systems Battery Switch ON/Off AFD is a robust 4-way selector switch designed for petrol and diesel engines, delivering a continuous 350A current rating. Its unique AFD feature allows safe switching while the engine is running, protecting your alternator. Constructed with durable tinned copper terminals and rated IP66, it ensures long-lasting performance in demanding marine and automotive settings. Compact and easy to mount, it’s the professional’s choice for reliable battery management.

## Description

E series battery switch.

Review: Very happy. - Well made and solid. Very happy. Just make sure you connect the right leads to the correct terminals on the back to avoid a fair bit of confused head scratching… It’s obvious and well labeled so just blame user error…
Review: Five Stars - Excellent product

## Features

- 350A continuous internal petrol and diesel engine.
- The AFD models allow you to change while the engine is running without damaging the alternator.
- A single piece of tinned copper terminals that do not lose their shape with the passage of time.
- Item Package Dimension: 10.0 cm L x 16.2 cm W x 22.2 cm H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000K2MCR2 |
| Actuator Type | Push Button |
| Best Sellers Rank | 186,624 in Automotive ( See Top 100 in Automotive ) 459 in Car Battery Switches |
| Brand | Blue Sea Systems |
| Circuit Type | 4-way |
| Colour | Black |
| Compatible Devices | Petrol and diesel engines, boats, vehicles with battery connection points |
| Compatible with Vehicle Type | Boats, RVs, Trucks |
| Connectivity Protocol | X-10 |
| Connector Type | Screw |
| Connector type | Screw |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Control Method | Touch |
| Control Type | Discrete |
| Controller Type | Ring |
| Current Rating | 350 Amps |
| Current rating | 350 Amps |
| Customer Reviews | 4.7 out of 5 stars 1,556 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Global Trade Identification Number | 00632085900151 |
| Included Components | BATTERY SELECTOR 4-WAY |
| International Protection Rating | IP66 |
| Item Dimensions | 9.8 x 9.8 x 7.9 centimetres |
| Item Type Name | BATTERY SELECTOR 4-WAY |
| Item Weight | 0.95 Pounds |
| Lower Temperature Rating | 1 Degrees Celsius |
| Manufacturer | Blue Sea Systems |
| Manufacturer Part Number | 9001e-BSS |
| Material | Plastic |
| Model Number | 9001e-BSS |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operating Voltage | 32 Volts (DC) |
| Operating voltage | 32 Volts (DC) |
| Operation Mode | ON-OFF |
| Operation mode | ON-OFF |
| Switch Type | Selector 4 Position |
| Terminal | Screw |
| UPC | 632085900151 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 5 Degrees Celsius |
| Wattage | 4200 watts |

## Product Details

- **Brand:** Blue Sea Systems
- **Connector type:** Screw
- **Contact type:** Normally Open
- **Current rating:** 350 Amps
- **Item dimensions L x W x H:** 9.8 x 9.8 x 7.9 centimetres
- **Material:** Plastic
- **Operating voltage:** 32 Volts
- **Operation mode:** ON-OFF
- **Switch type:** Selector 4 Position
- **Terminal:** Screw

## Images

![Blue Sea Systems - Battery Switch ON/Off AFD - Image 1](https://m.media-amazon.com/images/I/71wbzymMzTL.jpg)
![Blue Sea Systems - Battery Switch ON/Off AFD - Image 2](https://m.media-amazon.com/images/I/71owb079z7L.jpg)
![Blue Sea Systems - Battery Switch ON/Off AFD - Image 3](https://m.media-amazon.com/images/I/812sYrELBGL.jpg)
![Blue Sea Systems - Battery Switch ON/Off AFD - Image 4](https://m.media-amazon.com/images/I/71suH1AIyOL.jpg)
![Blue Sea Systems - Battery Switch ON/Off AFD - Image 5](https://m.media-amazon.com/images/I/71K9CI6TmkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very happy.
*by A***R on 13 March 2024*

Well made and solid. Very happy. Just make sure you connect the right leads to the correct terminals on the back to avoid a fair bit of confused head scratching… It’s obvious and well labeled so just blame user error…

### ⭐⭐⭐⭐⭐ Five Stars
*by T***S on 23 March 2018*

Excellent product

### ⭐⭐⭐⭐⭐ Great product!
*by J***E on 29 August 2017*

Great, very good. I should have bought two. Fast shipping and the product is satisfactorily functional for it's intended purpose. These are really cool We were very pleased to have them. Seems well built and good quality Just thrilled with this item!!!

## Frequently Bought Together

- Blue Sea Systems 9001E e-Series Battery Switch, Selector 4 Position, Red
- Blue Sea Systems 5026 ST Blade Fuse Block 12 Circuit with Ground and Cover
- 14 Gauge Marine Wire,100ft 14 AWG Duplex Marine Grade Wire Tinned Copper Boat Electrical Cable for Boat/Automotive/RV/Camper/Trailer Outdoor Use

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-09-22*