Cummins QSK50G11 vs Mitsubishi S12R-PTA3-C
The Cummins QSK50G11 and Mitsubishi S12R-PTA3-C are both diesel generator engines in a similar power class. Both are rated at roughly 1,699 kVA. Displacement is 50 L versus 49.03 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK50G11 | Mitsubishi S12R-PTA3-C |
|---|---|---|
| Headline rating | 1,700 kVA | 1,697 kVA |
| Standby (50 Hz) | 1,360 kWe | 1,357.6 kWe |
| Prime (50 Hz) | 1,232 kWe | — |
| Standby (60 Hz) | 1,500 kWe | — |
| Prime (60 Hz) | 1,365 kWe | — |
| Displacement | 50 L | 49.03 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | United Kingdom | China |
Choosing between Cummins QSK50G11 and Mitsubishi S12R-PTA3-C
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 Cummins QSK50G11 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.