Cummins Onan C40 N6 Specs (Power | Fuel Consumption)

The Cummins Onan C40 N6 generator is listed with standby output of 40 kW, 60 Hz operation, 3 available voltage configurations, and Single phase.

Cummins Onan Generator Specifications

Generator • 60 Hz • Single phase

Standby power: 40 kWVoltage options: 3 configurationsDry weight: 3,325 lb (1,508 kg)

Key specifications

40 kW Standby power

3 configurations Voltage options

Single phase Phase

3,325 lb (1,508 kg) Dry weight

60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Power-to-weight

Standby output per 1,000 lb of dry weight versus similar-output Cummins Onan models.

This model

12 kW

Peer average

20.4 kW

8th percentile

Model spec snapshot

Representative numeric specifications from this generator.

40 kWStandby

3,324.57 lbWeight

How the Cummins Onan C40 N6 compares

This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.

Standby power

40 kW

In line with avg

47th percentile

Dry weight

3,325 lb

52% above avg

95th percentile

Oil capacity

1.14 gal

55% below avg

7th percentile

Standby power40 kW

Low 30 kWAverage 41.2 kWHigh 55 kW

Very close to the similar-output Cummins Onan average. Around the 47th percentile for this field.

Dry weight3,325 lb

Low 1,120 lbAverage 2,187 lbHigh 3,476 lb

About 52% above the similar-output Cummins Onan average. Around the 95th percentile for this field.

Oil capacity1.14 gal

Low 1.14 galAverage 2.54 galHigh 4.06 gal

About 55% below the similar-output Cummins Onan average. Around the 7th percentile for this field.

This model Peer average

Generator information

Manufacturer	Cummins Onan
Model	C40 N6
Generator type	Generator
Frequency	60 Hz

Electrical output

Standby power	40 kW
Standby kVA	50.0
Voltage options	120/240 V, 120/208 V, 277/480 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	3, 325 lb (1, 508 kg)
Wet weight	2, 507 lb (1, 137 kg)
Dimensions (L × W × H)	87.6 × 34 × 44.2 in (2225 × 864 × 1123 mm)

Battery

Battery group	26 standard / 34 high capacity
Battery cranking	550 CCA
Battery voltage	12 V

Fuel consumption

Standby	519 gal/h
Prime	193.6 gal/h

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.