Cummins KTA50-G12A vs Mitsubishi S12R-PTAA2
The Cummins KTA50-G12A and Mitsubishi S12R-PTAA2 are both diesel generator engines in a similar power class. Both are rated at roughly 1,611 kVA. Displacement is 50.3 L versus 49.03 L. The table below compares their full specifications side by side.
| Specification | Cummins KTA50-G12A | Mitsubishi S12R-PTAA2 |
|---|---|---|
| Headline rating | 1,600 kVA | 1,621 kVA |
| Standby (50 Hz) | 1,280 kWe | 1,296.9 kWe |
| Prime (50 Hz) | 1,100 kWe | 1,182.6 kWe |
| Standby (60 Hz) | 1,430 kWe | 1,469.7 kWe |
| Prime (60 Hz) | 1,220 kWe | 1,335.6 kWe |
| Displacement | 50.3 L | 49.03 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | Japan |
Choosing between Cummins KTA50-G12A and Mitsubishi S12R-PTAA2
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Mitsubishi S12R-PTAA2 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.