Caterpillar
Caterpillar C3.3
The Caterpillar C3.3 is a 3.3-litre inline-4 diesel engine for generator sets, rated at 65 kVA / 52 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in United States.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-06-28
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 65 kVA
- Electrical Output
- 52 kWe
- Cylinders
- L4
- Displacement
- 3.3 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 | — | 48 | 60 |
| Standby Power | — | 52 | 65 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 55 | 68.8 |
| Standby Power | — | 60 | 75 |
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Caterpillar C3.3 overhaul & repair parts
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Caterpillar C3.3 generator set context
The Caterpillar C3.3 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 65 kVA / 52 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 | Caterpillar |
| Model | C3.3 |
| Configuration | L4 |
| Cylinders | 4 |
| Displacement | 3.3 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 Caterpillar C3.3?
The Caterpillar C3.3 is rated at 65 kVA standby / 60 kVA prime at 50 Hz (1,500 rpm); and 75 kVA standby / 69 kVA prime at 60 Hz (1,800 rpm).
Does the C3.3 run at 50 Hz or 60 Hz?
The Caterpillar C3.3 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Caterpillar C3.3 use?
The Caterpillar C3.3 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the C3.3?
The Caterpillar C3.3 is an inline-4 (4-cylinder) engine with a displacement of 3.3 L.
What is the catalog status of the Caterpillar C3.3?
The Caterpillar C3.3 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 C3.3?
This page links reference documents for the Caterpillar C3.3. Check each document's title, model coverage, revision and rating conditions before using it for selection.