The Cummins Onan 40 DGBC generator is listed with standby output of 40 kW, Diesel fuel, 60 Hz operation, 24 V output, and 1 or 3.
Generator • Diesel • 60 Hz • 1 or 3
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
26.9 kW
20.4 kW
40 kW
40 kW
How the Cummins Onan 40 DGBC compares
This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.
Very close to the similar-output Cummins Onan average. Around the 47th percentile for this field.
About 32% below the similar-output Cummins Onan average. Around the 15th percentile for this field.
Very close to the similar-output Cummins Onan average. Around the 39th percentile for this field.
Generator information
| Manufacturer | Cummins Onan |
|---|---|
| Model | 40 DGBC |
| Generator type | Generator |
| Fuel | Diesel |
| Frequency | 60 Hz |
Electrical output
| Standby power | 40 kW |
|---|---|
| Prime power | 40 kW |
| Voltage options | 24 V |
| Phase | 1 or 3 |
| Power factor | 0.8 |
Engine, cooling and controls
| Engine model | Cummins/Onan 4B3.9-G2 |
|---|---|
| Engine displacement | 238 cu in (3.9 L) |
| Aspiration / cooling | Natural |
| Rated engine speed | 1500 rpm |
| Engine coolant capacity | 4.57 gal (17.3 L) |
| Oil capacity | 2.51 gal (9.5 L) |
| Coolant capacity | 6.6 gal (25 L) |
| Maximum ambient | 104 °F (40 °C) |
| Controller | Detector, Detector 7, PCL-001, PowerCommand 3100, Sentinel |
Physical specifications
| Dry weight | 1, 488 lb (675 kg) |
|---|---|
| Dimensions (L × W × H) | 67.7 × 65.9 × 33.1 in (1720 × 1675 × 840 mm) |
Battery
| Battery group | 800 |
|---|---|
| Battery cranking | 1000 CCA |
| Battery voltage | 24 V |
| Battery quantity | 2 |
Fuel system and runtime
| Fuel tank | 52 gal (197 L) |
|---|
Maintenance and service parts
| Engine oil | Interval: 500 hr; Specification: Cummins engine Operation and Maintenance Manual |
|---|---|
| Fuel filter | Interval: 50 hr; Specification: Cummins engine Operation and Maintenance Manual |
| Air filter | Interval: 8760 hr; Specification: Cummins engine Operation and Maintenance Manual |
| Coolant | Specification: Cummins engine Operation and Maintenance Manual |
| Belt | Interval: 250 hr; Specification: Cummins engine Operation and Maintenance Manual |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.