SW8 Mains - Battery - Invertor Isolater - Keep Safe Switch

Campervan Dual Power Switch – Safe, Easy, Low Cost (12V / 240V Hook-Up Solution)

This simple Perfect for Campervan Conversions
Designed for campervan electrics and off-grid van life setups, this simple dual power switch is ideal for all camper vans and motorhomes including VW Transporter (T5, T6, T6.1), Ford Transit, Mercedes Sprinter, Vauxhall Vivaro, Renault Trafic, Peugeot Boxer, Citroën Relay, and Fiat Ducato conversions etc

You may not know.
If the 240V AC mains hook-up connects to the inverter output, it can:

• Damage or destroy the inverter

• Cause dangerous electrical feedback

• Increase the risk of fire or electric shock

This solution removes that risk by fully isolating the power sources in your campervan electrical system.

What This Does
This simple campervan switch setup lets you safely and easily choose between:

• Full isolation (no connection)

• 12V DC leisure battery + Inverted 240V AC

• 12V DC leisure battery + Mains 240V AC hook-up

It is designed for campervan conversions, van life builds, and motorhome electrical systems. Built to be simple, efficient, and to protect both you and your equipment.

This guide will show you what switch you need and where to buy it from. Which is only around £20

Key Benefits

• Flexible Campervan Power: Easily switch between 12V DC, mains hook-up 240V AC, or inverter 240V AC

• Improved Safety for Van Electrics: The 12V leisure battery system is isolated when not in use

• Cost Efficient Van Life Setup: Reduces wasted power and helps save money on your camper electrical system

• Beginner-Friendly Camper Build: Simple design suitable for DIY campervan conversions

Safe Use
This guide ensures that only one AC power source is connected at any time in your campervan or motorhome.  Correct switching and isolation are essential for safe campervan electrics.

Why This Is Important
This campervan power switch solution simplifies your van electrical system, improves safety, and protects your inverter, hook-up system, and appliances. It helps reduce long-term costs while delivering reliable off-grid and hook-up power for van life, campervan travel, and motorhome adventures.