Cummins KTA38-G4 vs Mitsubishi S12H-Y2PTAW-1
The Cummins KTA38-G4 and Mitsubishi S12H-Y2PTAW-1 are both diesel generator engines in a similar power class. Both are rated at roughly 1,250 kVA. Displacement is 38 L versus 37.11 L. The table below compares their full specifications side by side.
| Specification | Cummins KTA38-G4 | Mitsubishi S12H-Y2PTAW-1 |
|---|---|---|
| Headline rating | 1,250 kVA | 1,250 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 1,000 kWe | 1,000 kWe |
| Prime (60 Hz) | 900 kWe | 900 kWe |
| Displacement | 38 L | 37.11 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | U.S. EPA Tier 2 |
| Dry weight | — | — |
| Origin | China | Japan |
Choosing between Cummins KTA38-G4 and Mitsubishi S12H-Y2PTAW-1
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.