Cummins C400N6 vs Mesa GV22PU
The Cummins C400N6 and Mesa GV22PU are both natural gas generator engines in a similar power class. Both are rated at roughly 500 kVA. Displacement is 28 L versus 21.9 L. The table below compares their full specifications side by side.
| Specification | Cummins C400N6 | Mesa GV22PU |
|---|---|---|
| Headline rating | 500 kVA | 499 kVA |
| Standby (50 Hz) | — | 399 kWe |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 400 kWe | 450 kWe |
| Prime (60 Hz) | — | 409 kWe |
| Displacement | 28 L | 21.9 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | U.S. EPA Stationary |
| Dry weight | — | — |
| Origin | United States | United States |
Choosing between Cummins C400N6 and Mesa GV22PU
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 C400N6 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.