Cummins KTA38-G2B vs Mitsubishi S12A2-PTA
The Cummins KTA38-G2B and Mitsubishi S12A2-PTA are both diesel generator engines in a similar power class. Both are rated at roughly 887 kVA. Displacement is 38 L versus 33.93 L. The table below compares their full specifications side by side.
| Specification | Cummins KTA38-G2B | Mitsubishi S12A2-PTA |
|---|---|---|
| Headline rating | 888 kVA | 886 kVA |
| Standby (50 Hz) | 710 kWe | 708.8 kWe |
| Prime (50 Hz) | 640 kWe | 644.8 kWe |
| Standby (60 Hz) | 830 kWe | 807.2 kWe |
| Prime (60 Hz) | 750 kWe | 723.2 kWe |
| Displacement | 38 L | 33.93 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 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 | — | 3400 kg |
| Origin | China | Japan |
Choosing between Cummins KTA38-G2B and Mitsubishi S12A2-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-G2B has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.