Mitsubishi
Mitsubishi S6A3-PTAA
S6A3 Series
Mitsubishi S6A3-PTAA 18.560L L6 constant-speed diesel engine for generator applications. Official MHI output without fan - 50 Hz: standby 483 kWm at 1500 rpm, prime 440 kWm at 1500 rpm. Emissions: Unregulated.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-07-23
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 574 kVA
- Electrical Output
- 459 kWe
- Cylinders
- L6
- Displacement
- 18.56 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 | 440 | 418.4 | 523 |
| Standby Power | 483 | 459.2 | 574 |
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 S6A3-PTAA generator set context
The Mitsubishi S6A3-PTAA is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 574 kVA / 459 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 | S6A3-PTAA |
| Series | S6A3 Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 18.56 L |
| Dry Weight | 1800 kg |
| Dimensions (L×W×H) | 2329 × 1542 × 1681 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 S6A3-PTAA?
The Mitsubishi S6A3-PTAA is rated at 574 kVA standby / 523 kVA prime at 50 Hz (1,500 rpm).
Does the S6A3-PTAA run at 50 Hz or 60 Hz?
The Mitsubishi S6A3-PTAA is rated for 50 Hz (1,500 rpm).
What fuel does the Mitsubishi S6A3-PTAA use?
The Mitsubishi S6A3-PTAA is a diesel generator-set engine.
What is the displacement and cylinder configuration of the S6A3-PTAA?
The Mitsubishi S6A3-PTAA is an inline-6 (6-cylinder) engine with a displacement of 18.56 L.
What is the catalog status of the Mitsubishi S6A3-PTAA?
The Mitsubishi S6A3-PTAA 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 S6A3-PTAA?
This page links reference documents for the Mitsubishi S6A3-PTAA. Check each document's title, model coverage, revision and rating conditions before using it for selection.