| Model | INVERDELTA 400WIII | INVERDELTA 500WIII |
| Input Power (V) | 400 | 400 |
| Max Input Current(A) | 26 | 40 |
| Rated Input Capacity(kVA)) | 18 | 27.7 |
| Rated Open Circuit Voltage(V) | 76 | 80 |
| Welding Current Adjustment Range(A) | 25-400 | 25-500 |
| Rated Output(A)(20℃) / (40℃) | 60%25%@500 | |
| Weight(kg) | 45 | 49 |
| LxWxH (mm) | 654x 322 x 671 | 654x 322 x 671 |