| Model | INVERMATRIX 251 | INVERMATRIX 270 |
| Input Power (V) | 220 | 400 |
| Rated Input Current (A) | 55 | 12.4 |
| Rated Input Capacity(kVA)) | 7.5 | 6.4 |
| Rated Open Circuit Voltage(V) | 77 | 79 |
| Welding Current Adjustment Range(A) | MIG20-250/MMA10-250 | MIG30-270/MMA20-270/TIG20-270 |
| Rated Output(A) (40℃) | 60%@250 | 60%@270 |
| Weight(kg) | 49 | 48.6 |
| LxWxH (mm) | 935x485x870 | 935x485x870 |