Cummins C45N6 vs Generac RG04845
The Cummins C45N6 and Generac RG04845 are both natural gas generator engines in a similar power class. The Generac RG04845 is the higher-output unit (60 kVA vs 56 kVA). Displacement is 5.9 L versus 4.5 L. The table below compares their full specifications side by side.
| Specification | Cummins C45N6 | Generac RG04845 |
|---|---|---|
| Headline rating | 56 kVA | 60 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 45 kWe | 48 kWe |
| Prime (60 Hz) | — | — |
| Displacement | 5.9 L | 4.5 L |
| Configuration | L6 | L4 |
| Cylinders | 6 | 4 |
| Rated speed | 1,800 RPM | 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 C45N6 and Generac RG04845
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 Generac RG04845 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.