Three-phase

The three-phase wallbox for electric vehicles offers faster charging, thanks to the use of three separate electrical conductors that allow for a higher power transfer (typically from 3.6 kW to 22 kW) compared to single-phase versions. A 22 kW three-phase wallbox can fully charge a 60 kWh EV battery in about 3 hours.

However, these wallboxes require a three-phase electricity supply, common in commercial and industrial settings but rare in residential homes, which mostly have a single-phase supply. Therefore, the installation and upgrade costs for the entire electrical infrastructure are higher. Although most modern electric vehicles can use three-phase chargers, the actual charging speed depends on the vehicle's onboard capacity.

For example, a Tesla Model 3 charges at a maximum of 11 kW even when connected to a 22 kW charger. The advantages of three-phase charging include the ability to charge multiple vehicles simultaneously and reduced charging times for fleet operators. For private users, single-phase wallboxes remain more practical unless they invest in upgrading the electrical grid.