Yes, the possibility exists. Since the choice between a 1- or 3-phase system depends on the required power, this selection can be made independently.
If you select 3.3 kW, 4.6 kW or 6 kW in the "Nominal power" controller in the configurator, you will be offered a single-phase system. As soon as 9.9 kW or more is selected, the configurator suggests a three-phase system.
Consequently, our product configurator always directly calculates the required storage system based on your selected system requirements.