Caterpillar
Caterpillar G3520H
3500
Caterpillar G3520H — 84.2 L V20 spark-ignited natural gas generator engine (Cat G3500 series). 2500 ekW continuous at 1500 rpm (2490 ekW @ 60 Hz); high-output Miller-cycle; EPA Factory Certified. Source: Cat 2024 Electric Power Ratings Guide.
Overhaul & repair parts- Manufacturer files
- 3 datasheets
- Last updated
- 2026-07-25
- Package route
- gas generator sets
- Prime Power · 50 Hz
- 3,125 kVA
- Electrical Output
- 2,500 kWe
- Cylinders
- V20
- Displacement
- 97.5 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 | — | 2500 | 3125 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 2490 | 3112.5 |
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Caterpillar G3520H overhaul & repair parts
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Caterpillar G3520H generator set context
The Caterpillar G3520H is listed here as a natural gas generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 3,125 kVA / 2,500 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 | Caterpillar |
| Model | G3520H |
| Series | 3500 |
| Configuration | V20 Turbocharged Aftercooled |
| Cylinders | 20 |
| Displacement | 97.5 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Caterpillar G3520H?
The Caterpillar G3520H is rated at 3,125 kVA prime at 50 Hz (1,500 rpm); and 3,113 kVA prime at 60 Hz (1,800 rpm).
Does the G3520H run at 50 Hz or 60 Hz?
The Caterpillar G3520H is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Caterpillar G3520H use?
The Caterpillar G3520H is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the G3520H?
The Caterpillar G3520H is a V20 (20-cylinder) engine with a displacement of 97.5 L.
What emissions information is listed for the G3520H?
This record lists U.S. EPA Stationary for the Caterpillar G3520H. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Caterpillar G3520H?
The Caterpillar G3520H 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 G3520H?
This page links reference documents for the Caterpillar G3520H. Check each document's title, model coverage, revision and rating conditions before using it for selection.