The Cummins Onan C25 N6 generator is listed with standby output of 25 kW, 60 Hz operation, 4 available voltage configurations, and Single phase.
Generator • 60 Hz • Single phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
25.7 kW
19.2 kW
How the Cummins Onan C25 N6 compares
This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.
About 21% above the similar-output Cummins Onan average. Around the 82nd percentile for this field.
About 25% below the similar-output Cummins Onan average. Around the 42nd percentile for this field.
About 36% below the similar-output Cummins Onan average. Around the 26th percentile for this field.
Generator information
| Manufacturer | Cummins Onan |
|---|---|
| Model | C25 N6 |
| Generator type | Generator |
| Frequency | 60 Hz |
Electrical output
| Standby power | 25 kW |
|---|---|
| Standby kVA | 31.0 |
| Voltage options | 120/240 V, 120/208 V, 277/480 V, 347/600 V |
| Phase | Single phase |
Engine, cooling and controls
| Engine model | Cummins/Onan QSJ2.4 |
|---|---|
| Engine displacement | 146 cu in (2.4 L) |
| Aspiration / cooling | Turbocharged Aftercooled |
| Rated engine speed | 1800 rpm |
| Engine coolant capacity | 3.38 gal (12.8 L) |
| Oil capacity | 1.14 gal (4.3 L) |
| Coolant capacity | 13.2 gal (50 L) |
| Maximum ambient | 122 °F (50 °C) |
| Controller | PowerCommand 1.1 |
Physical specifications
| Dry weight | 972 lb (441 kg) |
|---|---|
| Dimensions (L × W × H) | 65.7 × 34 × 44.2 in (1669 × 864 × 1123 mm) |
Battery
| Battery group | 26 standard / 34 high capacity |
|---|---|
| Battery cranking | 545 / 850 CCA |
| Battery voltage | 12 V |
Maintenance and service parts
| Engine oil | Interval: 804 hr; Specification: 500 miles or 6 months, whichever comes first |
|---|---|
| Oil filter | Interval: 1000 hr; Specification: Every 1000 hours of operation or as needed, whichever comes first |
| Fuel filter | Interval: 500 hr; Specification: Every 500 hours of operation or as needed, whichever comes first |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.