Mitsubishi S12R-A2PTAW vs Weichai 12M33D1320E310
The Mitsubishi S12R-A2PTAW and Weichai 12M33D1320E310 are both diesel generator engines in a similar power class. Both are rated at roughly 1,470 kVA. Displacement is 49.03 L versus 39.6 L. The table below compares their full specifications side by side.
| Specification | Mitsubishi S12R-A2PTAW | Weichai 12M33D1320E310 |
|---|---|---|
| Headline rating | 1,455 kVA | 1,485 kVA |
| Standby (50 Hz) | 1,164 kWe | 1,188 kWe |
| Prime (50 Hz) | 1,058.4 kWe | 1,080 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 49.03 L | 39.6 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | China National Stage III / Unregulated |
| Dry weight | 5270 kg | — |
| Origin | Japan | China |
Choosing between Mitsubishi S12R-A2PTAW and Weichai 12M33D1320E310
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 Weichai 12M33D1320E310 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.