Caterpillar
Caterpillar 3406
3400 Series
Caterpillar 3406 14.6L 6-cylinder diesel engine for generator sets. 400 ekW standby at 60Hz. U.S. EPA Tier 2. Turbocharged Aftercooled.
- Standby Power · 50 Hz
- 400 kVA
- Electrical Output
- 320 kWe
- Cylinders
- L6
- Displacement
- 14.6 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 | 322.2 | 290 | 362.5 |
| Standby Power | 355.6 | 320 | 400 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 405.6 | 365 | 456.3 |
| Standby Power | 444.4 | 400 | 500 |
Caterpillar 3406 generator set context
The Caterpillar 3406 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 400 kVA / 320 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.
Also searched as
Technical Specifications
| Brand | Caterpillar |
| Model | 3406 |
| Series | 3400 Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 14.6 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 2 |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Caterpillar 3406?
The Caterpillar 3406 is rated at 400 kVA standby / 363 kVA prime at 50 Hz (1,500 rpm); and 500 kVA standby / 456 kVA prime at 60 Hz (1,800 rpm).
Does the 3406 run at 50 Hz or 60 Hz?
The Caterpillar 3406 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Caterpillar 3406 use?
The Caterpillar 3406 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3406?
The Caterpillar 3406 is an inline-6 (6-cylinder) engine with a displacement of 14.6 L.
What emissions standard does the 3406 meet?
The Caterpillar 3406 is certified to U.S. EPA Tier 2 emissions standards.
Is the Caterpillar 3406 still in production?
Yes — the Caterpillar 3406 is a current production model.
Is a datasheet available for the 3406?
Yes — an official Caterpillar datasheet for the Caterpillar 3406 can be downloaded from this page.
Related Engines
Compare Caterpillar 3406
Reference
- Canonical page
- /engines/caterpillar-3406
- Last database update
- 2026-06-28
- Manufacturer files
- 2 datasheets linked
Need this engine?
Need a generator package using this engine? Haifeng Machinery can help with sizing, alternator selection, controller, enclosure, voltage, and compliance support.
Get a Quote ↗Or browse Haifeng's diesel generator sets ↗