Mitsubishi
Mitsubishi S12R-PTA3
S12R Series
Mitsubishi S12R-PTA3 generator-drive diesel engine discovered in the GenProBase public selector and cross-validated against Mitsubishi Heavy Industries Engine System Asia generator-set product data. GenProBase lists this 50 Hz model at 1200 kWe prime and 1300 kWe standby, 49.03 L displacement, V12 layout, 1500 rpm speed, liquid cooling, turbocharged aftercooled aspiration, and unregulated emissions labeling. Official validation page: https://www.mhi.com/group/mhiesa/products/diesel-generator-sets/diesel-generator-sets-mgs1700r-2
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- Manufacturer files
- No datasheet
- Last updated
- 2026-08-10
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 1,625 kVA
- Electrical Output
- 1,300 kWe
- Cylinders
- V12
- Displacement
- 49.03 L
- Rated Speed
- 1,500 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 | 1261 | 1200 | — |
| Standby Power | 1391 | 1300 | — |
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-PTA3 generator set context
The Mitsubishi S12R-PTA3 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 1,625 kVA / 1,300 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.
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Technical Specifications
| Brand | Mitsubishi |
| Model | S12R-PTA3 |
| Series | S12R Series |
| Configuration | V12, turbocharged aftercooled generator-drive diesel |
| Cylinders | 12 |
| Displacement | 49.03 L |
| 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-PTA3?
The Mitsubishi S12R-PTA3 is rated at 1,625 kVA standby / 1,500 kVA prime at 50 Hz (1,500 rpm).
Does the S12R-PTA3 run at 50 Hz or 60 Hz?
The Mitsubishi S12R-PTA3 is rated for 50 Hz (1,500 rpm).
What fuel does the Mitsubishi S12R-PTA3 use?
The Mitsubishi S12R-PTA3 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the S12R-PTA3?
The Mitsubishi S12R-PTA3 is a V12 (12-cylinder) engine with a displacement of 49.03 L.
Is the Mitsubishi S12R-PTA3 still in production?
Yes — the Mitsubishi S12R-PTA3 is a current production model.