ESAB PROWELDER 250 is a computerized TIG welding machine with facilities for programming welding sequences and storing welding programs. It is intended for use with the PRB tube welding tools and the MTC wire feed unit, or with the POA/PIA/POB tubeplate welding tools.

The PROWELDER 250 power unit consists of a welding power source, control unit, and high-frequency unit. The control equipment set consists of a programming unit and electronic unit.

The PROWELDER 250 can perform up to 999 program sectors, with a memory capacity of approximately 50 programs with a 2-year battery backup.