Caterpillar G3616 vs Jenbacher J620
The Caterpillar G3616 and Jenbacher J620 are both natural gas generator engines in a similar power class. Both are rated at roughly 4,281 kVA. Displacement is 295.5 L versus 124.8 L. The table below compares their full specifications side by side.
| Specification | Caterpillar G3616 | Jenbacher J620 |
|---|---|---|
| Headline rating | 4,375 kVA | 4,186 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 3,500 kWe | 3,349 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | 3,328 kWe |
| Displacement | 295.5 L | 124.8 L |
| Configuration | V16 | V20 |
| Cylinders | 16 | 20 |
| Rated speed | 1,000 RPM | 1,500 / 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | Unregulated |
| Dry weight | — | — |
| Origin | United States | Austria |
Choosing between Caterpillar G3616 and Jenbacher J620
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 Caterpillar G3616 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.