Cummins KTA38-G9A vs Mitsubishi S12R-PTA
The Cummins KTA38-G9A and Mitsubishi S12R-PTA are both diesel generator engines in a similar power class. Both are rated at roughly 1,374 kVA. Displacement is 38 L versus 49.03 L. The table below compares their full specifications side by side.
| Specification | Cummins KTA38-G9A | Mitsubishi S12R-PTA |
|---|---|---|
| Headline rating | 1,375 kVA | 1,373 kVA |
| Standby (50 Hz) | 1,100 kWe | 1,098 kWe |
| Prime (50 Hz) | 1,000 kWe | 999 kWe |
| Standby (60 Hz) | — | 1,188 kWe |
| Prime (60 Hz) | — | 1,071 kWe |
| Displacement | 38 L | 49.03 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | Japan |
Choosing between Cummins KTA38-G9A and Mitsubishi S12R-PTA
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 KTA38-G9A has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.