Powersafe have designed a product called the RCD DUO® built with an earth sensing device, which monitors the earth’s circuit and trips the power like a standard safety switch would in a normal power supply scenario.
The RCD DUO® product is popular with caravan manufacturers as they are starting to fit these as standard to their caravans.
If a portable inverter generator is being used on a caravan, the safety switch in the caravan won’t actually protect from that power source so manufacturers are now fitting the RCD DUO® to offer that protection to their customers
Caravan Manufacturers are choosing to install the RCD DUO® as the main breaker it’s a standard rcd and then paired onto that is our earth sensing device