Cummins
Cummins QST30G4
Cummins QST30G4 generator-drive diesel engine discovered in the GenProBase public selector. GenProBase lists 2 row(s) across 50Hz, 60Hz with 30 L displacement, 12V cylinders, liquid-cooled cooling, and Unregulated emissions labeling. Treat this row as source-discovered and prioritize OEM datasheet attachment in a follow-up pass.
Overhaul & repair parts- Manufacturer files
- No datasheet
- Last updated
- 2026-08-05
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 1,100 kVA
- Electrical Output
- 880 kWe
- Cylinders
- V12
- Displacement
- 30 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 880 | 800 | — |
| Standby Power | 970 | 880 | — |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1007 | 910 | — |
| Standby Power | 1112 | 1000 | — |
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Cummins QST30G4 overhaul & repair parts
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Cummins QST30G4 generator set context
The Cummins QST30G4 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 1,100 kVA / 880 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 | Cummins |
| Model | QST30G4 |
| Configuration | L12, turbocharged aftercooled |
| Cylinders | 12 |
| Displacement | 30 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Cummins QST30G4?
The Cummins QST30G4 is rated at 1,100 kVA standby / 1,000 kVA prime at 50 Hz (1,500 rpm); and 1,250 kVA standby / 1,138 kVA prime at 60 Hz (1,800 rpm).
Does the QST30G4 run at 50 Hz or 60 Hz?
The Cummins QST30G4 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Cummins QST30G4 use?
The Cummins QST30G4 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QST30G4?
The Cummins QST30G4 is a V12 (12-cylinder) engine with a displacement of 30 L.
What is the catalog status of the Cummins QST30G4?
The Cummins QST30G4 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.