Welding inverter Sturm 255A is a powerful tool with a wide range of welding and works with electrodes with a thickness of 1.6 to 4 mm. The device is lightweight (2.8 kg) and convenient dimensions, while at the same time demonstrating high productivity with a duty cycle of 80%. The welding current range is 20 to 255 A. The accuracy of the current setting is controlled by a digital display. The device does not have a classic power switch; it is replaced by the Touch Start function, which turns on the device when the electrode touches the workpiece and turns it off if there is no activity for two minutes.