Cummins QSK23-G5 vs Mitsubishi S6R2-PTAA-C
The Cummins QSK23-G5 and Mitsubishi S6R2-PTAA-C are both diesel generator engines in a similar power class. Both are rated at roughly 841 kVA. Displacement is 23.152 L versus 29.96 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK23-G5 | Mitsubishi S6R2-PTAA-C |
|---|---|---|
| Headline rating | 838 kVA | 843 kVA |
| Standby (50 Hz) | — | 674.5 kWe |
| Prime (50 Hz) | — | 612.8 kWe |
| Standby (60 Hz) | 670 kWe | — |
| Prime (60 Hz) | 592 kWe | — |
| Displacement | 23.152 L | 29.96 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Cummins QSK23-G5 and Mitsubishi S6R2-PTAA-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 Mitsubishi S6R2-PTAA-C has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.