| Parameter model | MIG 250 GS | MIG 250 F | MIG 400 I | MIG 500 I2 |
| Input voltage (V) | AC 220V±15% | AC 380V±15% | AC 380V±15% | AC 380V±15% |
| Phase | 1 | 3 | 3 | 3 |
| Frequency (HZ) | 50/60 | 50/60 | 50/60 | 50/60 |
| Rated input current (A) | 51.6 | 14.2 | 21.1 | 37.5 |
| No-load voltage (A) | 59 | 60 | 74 | 77 |
| Output current range (A) | 50-250 | 50-270 | 50-400 | 100-500 |
| Duty cycle (%) | 60 | 60 | 60 | 60 |
| No-load loss (W) | 40 | 100 | 100 | 100 |
| Efficiency | 80 | 85 | 85 | 85 |
| Power factor | 0.73 | 0.93 | 0.93 | 0.93 |
| Insulation grade | F | F | F | F |
| Housing protection grade | IP21 | IP21 | IP21 | IP21 |
| Net weight (Kg) approx | 14.250 | 21.800 | 36 | 36 |
| dimensions (mm) | 510*155*475 | 455*205*375 | 550*28*550 | 550*280*550 |
