The GYS PROTIG 231L DC PFC is a professional TIG welding machine designed for precision work across various applications. This model supports two main welding processes: DC Standard for smooth welding on most ferrous metals and DC pulsed up to 2 kHz for controlling the molten pool temperature, minimizing distortion, and for welding thin sheets starting from 0.3 mm thickness. It also features MMA Standard for rutile and basic electrodes up to 5 mm in diameter, with MMA pulsed up to 500 Hz facilitating vertical upward welding, such as on pipes and pipelines.

The machine offers two time control modes: spot mode adjustable from 0.1 to 60 seconds for component welding and pulse mode adjustable from 0.01 to 60 seconds for fine sheet welding. Two ignition types are available: contactless HF or LIFT for electrode-sensitive environments. Three trigger management options include 2T, 4T, and 4T LOG configurations. An advanced secondary control ensures optimal arc stability and constant current in all positions, with storage for up to 50 programs per process for recurring tasks.

The automatic torch recognition makes it compatible with blade torches, dual-button torches, potentiometer torches, and up-down torches. Ideal for workshop use, this welder is suitable for extension cables up to 100 m and features a reinforced chassis with shock-absorbing pads. Its space-saving design facilitates easy movement on-site, and it includes surge protection up to 400 V (PROTEC 400). The package comes with accessories for immediate use. This successor model of previous GYS TIG welders maintains the brand's reputation for durability and reliability in professional welding applications.