| Model no | ECO-200 | ECO-250 | ECO-300 |
| Rated input power | 8.7KW | 9.4KW | 10.6KW |
| Input frequency | 50-60Hz | 50-60Hz | 50-60Hz |
| Output current | 30-200A | 25-250A | 35-300A |
| Duty cycle | 60% | 35% | 35% |
| Electrode diameter | 1.6-4.0mm | 1.6-4.0mm | 1.6-5.0mm |
| Weight | 5kgs | 5.2kgs | 5.5kgs |
| Dimension | 29.2x14x20cm | ||