Mitsubishi
Mitsubishi S12R-PTA2
S12R Series
Mitsubishi S12R-PTA2 49.03L V12 generator-drive diesel engine. MHIET rates it at 1195/1315 kWm prime/standby at 50 Hz and 1340/1470 kWm at 60 Hz. A supplied build list also identifies 1200 kW 60 Hz generator packages using this model.
- Standby Power · 50 Hz
- 1,562 kVA
- Electrical Output
- 1,250 kWe
- Cylinders
- V12
- Displacement
- 49.03 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf · kWe estimated — see note below
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1195 | 1135.2 | 1419 |
| Standby Power | 1315 | 1249.6 | 1562 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1340 | 1272.8 | 1591 |
| Standby Power | 1470 | 1396.8 | 1746 |
Note: The manufacturer does not publish a separate kWe rating for this engine. kWe values shown are estimated from the rated mechanical output (kWm) using a conservative 90% alternator efficiency factor.
Mitsubishi S12R-PTA2 generator set context
The Mitsubishi S12R-PTA2 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 1,562 kVA / 1,250 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
Also searched as
Technical Specifications
| Brand | Mitsubishi |
| Model | S12R-PTA2 |
| Series | S12R Series |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 49.03 L |
| Dry Weight | 5400 kg |
| Dimensions (L×W×H) | 1846 × 1401 × 1592 mm |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | Japan |
Frequently asked questions
What is the power output of the Mitsubishi S12R-PTA2?
The Mitsubishi S12R-PTA2 is rated at 1,562 kVA standby / 1,419 kVA prime at 50 Hz (1,500 rpm); and 1,746 kVA standby / 1,591 kVA prime at 60 Hz (1,800 rpm).
Does the S12R-PTA2 run at 50 Hz or 60 Hz?
The Mitsubishi S12R-PTA2 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Mitsubishi S12R-PTA2 use?
The Mitsubishi S12R-PTA2 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the S12R-PTA2?
The Mitsubishi S12R-PTA2 is a V12 (12-cylinder) engine with a displacement of 49.03 L.
Is the Mitsubishi S12R-PTA2 still in production?
Yes — the Mitsubishi S12R-PTA2 is a current production model.
Related Engines
Compare Mitsubishi S12R-PTA2
Reference
- Canonical page
- /engines/mitsubishi-s12r-pta2
- Last database update
- 2026-07-23
- Manufacturer files
- No datasheet linked yet
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