The MASTER-AS is the optimal, robust construction site machine due to the high transformer power of 1800 ampere at only 150 kg. The device has sufficient power reserve for welding in PC position, especially in connection with constant current control, long extension cables are also possible. The welding range is 2-18 mm in PA position (tub position) and up to 16 mm in PC position (wall). The welding current and welding time can be infinitely adjusted. As an option, the device can be equipped with an inert gas module.