Cummins QSM11-G3 vs Detroit Diesel Series 60 12.7L
The Cummins QSM11-G3 and Detroit Diesel Series 60 12.7L are both diesel generator engines in a similar power class. Both are rated at roughly 375 kVA. Displacement is 10.8 L versus 12.7 L. The table below compares their full specifications side by side.
| Specification | Cummins QSM11-G3 | Detroit Diesel Series 60 12.7L |
|---|---|---|
| Headline rating | 375 kVA | 375 kVA |
| Standby (50 Hz) | 300 kWe | 300 kWe |
| Prime (50 Hz) | 270 kWe | 272 kWe |
| Standby (60 Hz) | 310 kWe | 350 kWe |
| Prime (60 Hz) | 280 kWe | 320 kWe |
| Displacement | 10.8 L | 12.7 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | U.S. EPA Tier 3 |
| Dry weight | — | — |
| Origin | China | United States |
Choosing between Cummins QSM11-G3 and Detroit Diesel Series 60 12.7L
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.