Jenbacher
Jenbacher J620
Type 6
Jenbacher J620 Type 6 lean-burn natural-gas engine for generator and CHP service. Jenbacher publishes up to 3,349 kWe at 50 Hz and 3,328 kWe at 60 Hz at generator terminals, with electrical efficiency up to 45.9%. The 60 Hz package uses a gearbox while the engine remains at 1,500 rpm. Output and emissions depend on gas quality, NOx configuration, voltage and site conditions; the published NOx variants are not an EPA Tier or EU Stage engine certification.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-07-24
- Package route
- gas generator sets
- Prime Power · 50 Hz
- 4,186 kVA
- Electrical Output
- 3,349 kWe
- Cylinders
- V20
- Displacement
- 124.8 L
- Rated Speed
- 1,500 / 1,500 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 3349 | 4186.3 |
60 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 3328 | 4160 |
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Jenbacher J620 generator set context
The Jenbacher J620 is listed here as a natural gas generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 4,186 kVA / 3,349 kWe / prime 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 | Jenbacher |
| Model | J620 |
| Series | Type 6 |
| Configuration | V20 |
| Cylinders | 20 |
| Displacement | 124.8 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | Austria |
Frequently asked questions
What is the power output of the Jenbacher J620?
The Jenbacher J620 is rated at 4,186 kVA prime at 50 Hz (1,500 rpm); and 4,160 kVA prime at 60 Hz (1,500 rpm).
Does the J620 run at 50 Hz or 60 Hz?
The Jenbacher J620 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,500 rpm).
What fuel does the Jenbacher J620 use?
The Jenbacher J620 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the J620?
The Jenbacher J620 is a V20 (20-cylinder) engine with a displacement of 124.8 L.
What is the catalog status of the Jenbacher J620?
The Jenbacher J620 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 J620?
This page links reference documents for the Jenbacher J620. Check each document's title, model coverage, revision and rating conditions before using it for selection.