ESAB MECHTIG 315 is a transistor-controlled welding power source for TIG welding. It is programmable and provided with a memory so that different welding programs can be set and stored by means of a control box. The welding programs can be divided into sectors with different sets of parameters. The division into sectors is time-controlled.

MECHTIG 315 is designed both for manual and mechanized welding, and as a result it can drive the ESAB tube welding tools PRB, PRG, PRI, POB etc. (As to the POB tool some limitations regarding the movement area apply).

For manual welding a torch for central or OKC connection is used.