Victron Quattro 48/5000/70-100/100 120V VE.Bus - QUA485021100Two AC inputs with integrated transfer switch The Victron Energy Quattro can be connected to two independent AC sources, for example, shore side power and a generator, or two generators. The Quattro will automatically connect to the active source. Two AC Outputs The main output has no break functionality. In the event of a grid failure, or shore or generator power being disconnected, the Victron Quattro takes over the supply to the connected loads.