Cummins C45N6
Cummins C45N6 is a 45 kWe / 56 kVA, 60 Hz gaseous standby generator set powered by the QSJ5.9G-G1 engine. Cummins' official 2025 North American model-range card lists the set for natural gas or propane and identifies EPA NSPS certification. This database uses the published natural-gas generator rating.
Production StatusIn Production
QSJ5.9G-G1 Genset
- Configuration
- Inline-6 Turbocharged Spark Ignition
- Displacement
- 5.9 L
- Fuel
- Natural Gas
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
60 Hz1800 RPM
| Rating | Standby |
|---|---|
| Electrical output kWe | 45 |
| Apparent power kVA | 56 |
Datasheet & documents
Match the model number on your engine plate to the document. Check its revision date and the speed and duty listed for each power rating.
Technical specifications
Technical Specifications
| Brand | Cummins |
| Model | C45N6 |
| Series | QSJ5.9G-G1 Genset |
| Configuration | Inline-6 Turbocharged Spark Ignition |
| Cylinders | 6 |
| Displacement | 5.9 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | U.S. EPA Stationary, U.S. EPA NSPS, U.S. EPA Stationary Emergency |
| Country of Origin | United States |
Check your engine model
The Cummins C45N6 is a natural gas generator-drive engine for 60 Hz generator sets, rated at 56 kVA / 45 kWe / standby rating. Match the model and serial number on your engine plate when requesting a manual or parts. The ratings and emissions information below help identify the version fitted to your generator.
Other ways this model is written
c45n6Cummins C45N6QSJ5.9G-G1 Genset C45N6
C45N6 repair parts
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Frequently asked questions
What is the power output of the Cummins C45N6?
The Cummins C45N6 is rated at 56 kVA standby at 60 Hz (1,800 rpm).
Does the C45N6 run at 50 Hz or 60 Hz?
The Cummins C45N6 is rated for 60 Hz (1,800 rpm).
What fuel does the Cummins C45N6 use?
The Cummins C45N6 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the C45N6?
The Cummins C45N6 is an inline-6 (6-cylinder) engine with a displacement of 5.9 L.
What emissions information is listed for the C45N6?
This record lists U.S. EPA Stationary for the Cummins C45N6. 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 Cummins C45N6?
The Cummins C45N6 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 C45N6?
This page links reference documents for the Cummins C45N6. Check each document's title, model coverage, revision and rating conditions before using it for selection.