If you have one of these fitted to your European Caravan, you don't need Safety Chains for your WOF
Fitted after early 2004 Fits most AL-KO braked couplings.
The purpose of a breakaway cable is to apply the trailers brakes if it becomes separated from the towing vehicle. Having done this, the cable assembly is designed to part, allowing the trailer to come to a halt away from the towing vehicle.
Fitting Instructions guide It’s vital that your breakaway cable is connected correctly as it is a legal requirement, and in an emergency may be called upon to activate your caravan brakes.
How to correctly attach your breakaway cable.
Note - the cable comes with an open loop that attaches to the handbrake and needs to be "hammered" closed.