Flex 12V Automatic Changeover Switch

Short Product Summary

The Flex 12V Automatic Changeover Switch keeps a 12V fridge running without you touching a thing. While campsite power is connected it takes priority, and when that is unplugged the unit falls back to your 12V battery. It carries a 10A internal fuse and comes with pre-wired leads.

Why This Product

A fridge that stops when you unplug from campsite power, or one that drains the battery while you are plugged in, spoils both food and plans. This changeover unit makes the swap for you, giving the mains-fed supply priority and going back to the battery when needed. Nobody has to remember to flip a switch when you pack up and leave.

Key Features

• Automatic priority switching – uses the mains-fed supply whenever it is present
• Battery backup mode – falls back to the 12V battery when the mains-fed supply is unplugged
• Battery protection – avoids drawing on the battery while you are on campsite power
• 10A internal fuse – a built-in, replaceable fuse for protection
• Pre-wired leads – input and output leads are already attached
• Inline installation – made to go in line with your existing 12V fridge wiring

Ideal For

• 12V camping fridge owners who move between campsite power and the battery.
• Dual-battery system users who want the auxiliary battery spared while on mains.
• Caravan and camper conversion owners looking for hands-off switching.
• 4x4 overlanders and trailer owners running off-grid setups.

Local Support from 4Matt Campers

Ask the 4Matt Campers team about wiring options for your fridge setup anywhere in South Africa; we can help you match the unit to your system.

Technical Specifications

• Brand: Flex
• Part Number: FACO10A
• DC input: 12V DC (auxiliary battery)
• Output: Regulated 12V output, mains-fed supply given priority over battery
• Fuse rating: 10A (internal, replaceable)
• Operation: Fully automatic, no manual switching
• System compatibility: 12V systems only (not compatible with 24V)

What's Included

• Flex 12V automatic changeover unit
• Pre-wired input and output leads
• Integrated 10A fuse (installed)

Optional Fitment / Upgrade Notes

Get the wiring right before anything is connected:

• This unit is for 12V systems only and is not compatible with 24V.
• Do not connect 220V AC directly to the changeover switch. Ask us how the mains side should be supplied, and have a qualified auto-electrician do the wiring.
• Compare your fridge current draw with the 10A internal fuse.
• Work out where it will mount in your vehicle, caravan or power compartment before you order.

Complete Your Setup

Keep your fridge running with a camping fridge, add wiring parts from electrical accessories, and see the Flex Adventures range and solar panels for off-grid extras.

FAQ

What does the changeover switch do?
It automatically feeds your 12V fridge from the mains-fed supply when that is connected, and reverts to the 12V battery when it is unplugged.

Can I use it on a 24V system?
No. It is not compatible with 24V systems.

What fuse does it have?
A 10A internal fuse, which is replaceable.

Can I connect mains power straight to it?
No. Do not connect 220V AC directly to the changeover switch. Have a qualified auto-electrician fit it, and ask us how the mains side should be supplied.

Do I need to switch anything by hand?
No, it operates fully automatically.