Are the VFDs and pumps compatible with the european electric circuit (230V/50Hz) and what kind of connectors will be delivered?

The VFD (Variable Frequency Drive) is not supplied with plugs, cable or connectors. You provide the cable and power plug or connector for the VFD. All you need to do is get an extension cable and expose the three wires of the cable and connect them to R, T and Ground. Please see the datasheet on this page for wiring information: https://www.buildyourcnc.com/item/spindle-inverter-2!2kw-spindle-novfd Our pumps only have a 110 volt input, so you will need to purchase the pump in your country.