Cummins QSB5.9-G30 vs FPT NEF45 TE2P
The Cummins QSB5.9-G30 and FPT NEF45 TE2P are both diesel generator engines in a similar power class. Both are rated at roughly 141 kVA. Displacement is 5.9 L versus 4.5 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB5.9-G30 | FPT NEF45 TE2P |
|---|---|---|
| Headline rating | 140 kVA | 141 kVA |
| Standby (50 Hz) | 112 kWe | — |
| Prime (50 Hz) | 90 kWe | — |
| Standby (60 Hz) | — | 112 kWe |
| Prime (60 Hz) | — | 102 kWe |
| Displacement | 5.9 L | 4.5 L |
| Configuration | L6 | L4 |
| Cylinders | 6 | 4 |
| Rated speed | 1,500 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | U.S. EPA Tier 3 |
| Dry weight | — | — |
| Origin | China | Italy |
Choosing between Cummins QSB5.9-G30 and FPT NEF45 TE2P
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 FPT NEF45 TE2P has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.