| Parameter | Unit | CWM-MIG251D | CWM-MIG250D |
| Input voltage | Volt | 230±10% | 380/415±15% |
| Phase | No | 1 | 3 |
| Frequency | Hz | 50/60 | 50/60 |
| Max input KVA@60% duty cycle | KVA | 7 | 8.5 |
| Welding current range | Amps | 50-250 | 50-250 |
| Open current voltage | Volts DC | 16-32 | 16-36 |
| Welding current @60% duty cycle | Amps | 250 | 250 |
| Welding current @100% duty cycle | Amps | 190 | 195 |
| Insulation | Class | H | H |
| Wire feed speed | m/min | 1.5 to 18 | 1.5 to 18 |
| Suitable wire diameter | mm | 0.6, 0.8, 1.0 | 0.6, 0.8, 1.0 |
| Wire feeder motor voltage | Volts DC | 42 | 42 |
| Wire feed speed | – | External-double roll quick change over type | External-double roll quick change over type |
| Wire drive motor | Type | Permanent magnet DC type | Permanent magnet DC type |
| Welding output terminals | Type | Stud type | Stud type |
| Cooling | Type | Forced Air | Forced Air |
| Dimensions (LxWxH) | mm | 800x510x680 | 800x510x680 |
| Weight (approx) | kg | 142 | 145 |
