Cummins C550N6 vs PSI 32L
The Cummins C550N6 and PSI 32L are both natural gas generator engines in a similar power class. Both are rated at roughly 672 kVA. Displacement is 37.7 L versus 31.8 L. The table below compares their full specifications side by side.
| Specification | Cummins C550N6 | PSI 32L |
|---|---|---|
| Headline rating | 688 kVA | 656 kVA |
| Standby (50 Hz) | — | 525 kWe |
| Prime (50 Hz) | — | 450 kWe |
| Standby (60 Hz) | 550 kWe | 650 kWe |
| Prime (60 Hz) | — | 525 kWe |
| Displacement | 37.7 L | 31.8 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 | — | 3124 kg |
| Origin | United States | United States |
Choosing between Cummins C550N6 and PSI 32L
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 C550N6 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.