Mitsubishi
Mitsubishi S6U-PTA
S6U Series
Mitsubishi S6U-PTA 70.570L L6 constant-speed diesel engine for generator applications. Official MHI output without fan - 50 Hz: standby 1259 kWm at 1000 rpm, prime 1214 kWm at 1000 rpm; 60 Hz: standby 1128 kWm at 900 rpm, prime 1091 kWm at 900 rpm, prime 1288 kWm at 1200 rpm, standby 1351 kWm at 1200 rpm. Emissions: Unregulated.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-07-23
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 1,495 kVA
- Electrical Output
- 1,196 kWe
- Cylinders
- L6
- Displacement
- 70.57 L
- Rated Speed
- 900 / 1,080 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf · kWe estimated — see note below
50 Hz900 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1214 | 1153.6 | 1442 |
| Standby Power | 1259 | 1196 | 1495 |
60 Hz1080 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1288 | 1224 | 1530 |
| Standby Power | 1351 | 1283.2 | 1604 |
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.
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Mitsubishi S6U-PTA generator set context
The Mitsubishi S6U-PTA is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 1,495 kVA / 1,196 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 | S6U-PTA |
| Series | S6U Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 70.57 L |
| Dry Weight | 8350 kg |
| Dimensions (L×W×H) | 3402 × 1402 × 2126 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 S6U-PTA?
The Mitsubishi S6U-PTA is rated at 1,495 kVA standby / 1,442 kVA prime at 50 Hz (900 rpm); and 1,604 kVA standby / 1,530 kVA prime at 60 Hz (1,080 rpm).
Does the S6U-PTA run at 50 Hz or 60 Hz?
The Mitsubishi S6U-PTA is available for both 50 Hz (900 rpm) and 60 Hz (1,080 rpm).
What fuel does the Mitsubishi S6U-PTA use?
The Mitsubishi S6U-PTA is a diesel generator-set engine.
What is the displacement and cylinder configuration of the S6U-PTA?
The Mitsubishi S6U-PTA is an inline-6 (6-cylinder) engine with a displacement of 70.57 L.
What is the catalog status of the Mitsubishi S6U-PTA?
The Mitsubishi S6U-PTA is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the S6U-PTA?
This page links reference documents for the Mitsubishi S6U-PTA. Check each document's title, model coverage, revision and rating conditions before using it for selection.