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| Model | MMA-250M | MMA-280M | MMA-315M |
| Type | MOS 3 PCB | MOS 3 PCB | MOS 3 PCB |
| AC Input Voltage(V) | AC 220V(110V can do) | AC 220V(110V can do ) | AC 220V(110V can do ) |
| Rated Input Power Capacity(KVA) | 6.6 | 8.8 | 9.5 |
| Input Frequency(Hz) | 50/60 | 50/60 | 50/60 |
| Non-load Voltage(V) | 68 | 68 | 68 |
| Output current range(A) | 20-250 | 20-280 | 20-315 |
| Rated Duty Cycle(%) | 60% | 60% | 60% |
| Efficiency(%) | 85% | 85% | 85% |
| Class of Insulation | F | F | F |
| Protection class of case | IP21 | IP21 | IP21 |
| Electrode diameter(mm) | 1.6-4.0 | 1.6-5.0 | 1.6-5.0 |
| Quick joint Size | 35-50mm | 35-50mm | 35-50mm |
| N.W./G.W.(kg) | 6.5/8.5 | 6.6/8.6 | 12/14 |
| Machine Size(LxWxH mm) | 385*165*250 | 385*165*250 | 475*200*315 |
| Package Dimension(LxWxH mm) | 450*225*345 color box+foam 445*210*340 honeycomb box 545*190*450 BMX box+color box |
450*225*345 color box+foam 445*210*340 honeycomb box 545*190*450 BMX box+color box |
535*245*370 honeycomb box 615*275*400 color box+foam |
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