Cummins
Cummins QSB5G1
QSB Series
Cummins QSB5G1 generator-drive diesel engine discovered in the GenProBase public selector. GenProBase lists 2 row(s) across 50Hz, 60Hz with 4.5 L displacement, 4L cylinders, liquid-cooled cooling, and U.S. EPA Tier 3 / EU Stage IIIA / China III emissions labeling. Treat this row as source-discovered and prioritize OEM datasheet attachment in a follow-up pass.
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- Manufacturer files
- No datasheet
- Last updated
- 2026-08-05
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 70 kVA
- Electrical Output
- 56 kWe
- Cylinders
- L4
- Displacement
- 4.5 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 | 65 | 50 | — |
| Standby Power | 75 | 56 | — |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 74 | 55 | — |
| Standby Power | 88 | 60 | — |
Cummins QSB5G1 generator set context
The Cummins QSB5G1 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 70 kVA / 56 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 | QSB5G1 |
| Series | QSB Series |
| Configuration | L4, turbocharged aftercooled |
| Cylinders | 4 |
| Displacement | 4.5 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 3 / EU Stage IIIA / China III |
| Certifications | U.S. EPA Tier 3, EU Stage IIIA, China III |
| Country of Origin | United States / United Kingdom |
Frequently asked questions
What is the power output of the Cummins QSB5G1?
The Cummins QSB5G1 is rated at 70 kVA standby / 63 kVA prime at 50 Hz (1,500 rpm); and 75 kVA standby / 69 kVA prime at 60 Hz (1,800 rpm).
Does the QSB5G1 run at 50 Hz or 60 Hz?
The Cummins QSB5G1 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Cummins QSB5G1 use?
The Cummins QSB5G1 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QSB5G1?
The Cummins QSB5G1 is an inline-4 (4-cylinder) engine with a displacement of 4.5 L.
What emissions standard does the QSB5G1 meet?
The Cummins QSB5G1 is certified to U.S. EPA Tier 3 / EU Stage IIIA / China III emissions standards.
Is the Cummins QSB5G1 still in production?
Yes — the Cummins QSB5G1 is a current production model.