Cummins K50N-G9 vs Jenbacher J412
The Cummins K50N-G9 and Jenbacher J412 are both natural gas generator engines in a similar power class. Both are rated at roughly 1,127 kVA. Displacement is 50.3 L versus 36.7 L. The table below compares their full specifications side by side.
| Specification | Cummins K50N-G9 | Jenbacher J412 |
|---|---|---|
| Headline rating | 1,125 kVA | 1,128 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 900 kWe | 902 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | 900 kWe | 853 kWe |
| Displacement | 50.3 L | 36.7 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | Austria |
Choosing between Cummins K50N-G9 and Jenbacher J412
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 Jenbacher J412 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.