---
product_id: 57324001
title: "Blue Sea Systems - Battery Switch ON/Off AFD"
brand: "blue sea systems"
price: "£84.17"
currency: GBP
in_stock: true
reviews_count: 8
category: "Blue Sea Systems"
url: https://www.desertcart.co.uk/products/57324001-blue-sea-systems-battery-switch-on-off-afd
store_origin: GB
region: United Kingdom
---

# 350A continuous current Switch under load without damage Tinned copper terminals, shape-retentive Blue Sea Systems - Battery Switch ON/Off AFD

**Brand:** blue sea systems
**Price:** £84.17
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your ride with seamless, damage-free switching!

## Quick Answers

- **What is this?** Blue Sea Systems - Battery Switch ON/Off AFD by blue sea systems
- **How much does it cost?** £84.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/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

- • **Compact & Panel-Ready:** Sleek 10x16x22 cm design fits seamlessly into your control panel.
- • **IP66 Rated Protection:** Built tough to withstand harsh marine and automotive environments.
- • **Durable Copper Terminals:** Single-piece tinned copper ensures long-lasting, reliable connectivity.
- • **Live Switching Capability:** Change battery connections on the fly without risking alternator damage.
- • **Unmatched 350A Power Handling:** Handles heavy-duty petrol & diesel engines with ease.

## 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 live switching without alternator damage, supported by durable tinned copper terminals for long-term reliability. Compact, panel-mountable, and IP66 rated, it’s engineered for demanding automotive, marine, and RV applications.

## 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 | 206,545 in Automotive ( See Top 100 in Automotive ) 517 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 1,538 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 | 431 g |
| 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 |
| Operating voltage | 32 Volts |
| Operation Mode | ON-OFF |
| Operation mode | ON-OFF |
| Smart Home Compatibility | Not Smart Home Compatible |
| 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.uk/products/57324001-blue-sea-systems-battery-switch-on-off-afd](https://www.desertcart.co.uk/products/57324001-blue-sea-systems-battery-switch-on-off-afd)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-17*