The unique innovative VTS (Voltage transfer switch) phase switching system allows using the generator both in three-phase mode (400V) and in single-phase mode (230V) without loss of power! It is no longer necessary to purchase two separate generators and maintain them: just switch the mode and use the TM Könner & Söhnen generator with the phase switching system at the required voltage. Possibility of welding inverter connection with maximum current up to 200 A* (in single phasemode). * Only in case that the welding inverter has 85% efficiency and an arc voltage of 25 V.