Mitsubishi S6A3-PTA vs VMAN D15B1
The Mitsubishi S6A3-PTA and VMAN D15B1 are both diesel generator engines in a similar power class. Both are rated at roughly 521 kVA. Displacement is 18.56 L versus 14.618 L. The table below compares their full specifications side by side.
| Specification | Mitsubishi S6A3-PTA | VMAN D15B1 |
|---|---|---|
| Headline rating | 523 kVA | 518 kVA |
| Standby (50 Hz) | 418.4 kWe | — |
| Prime (50 Hz) | 380 kWe | — |
| Standby (60 Hz) | 484.8 kWe | 414 kWe |
| Prime (60 Hz) | 436.8 kWe | 365 kWe |
| Displacement | 18.56 L | 14.618 L |
| Configuration | L6 | V8 |
| Cylinders | 6 | 8 |
| Rated speed | 1,500 / 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | 1800 kg | — |
| Origin | Japan | China |
Choosing between Mitsubishi S6A3-PTA and VMAN D15B1
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 Mitsubishi S6A3-PTA has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.