Cummins Onan C1250 D2R Specs (Power | Fuel Consumption)

The Cummins Onan C1250 D2R generator is listed with standby output of 87 kW, Diesel fuel, 50 Hz operation, 5 available voltage configurations, and A (U) / B (V) / C (W).

Cummins Onan Generator Specifications

Generator • Diesel • 50 Hz • A (U) / B (V) / C (W)

Standby power: 87 kWVoltage options: 5 configurationsDry weight: 34,833 lb (15,800 kg)

Key specifications

87 kW Standby power

Diesel Fuel

5 configurations Voltage options

A (U) / B (V) / C (W) Phase

34,833 lb (15,800 kg) Dry weight

50 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

2.5 kW

Peer average

31.8 kW

1st percentile

Power output

Low 87 kW High 1,120 kW

Standby

87 kW

Prime

1,120 kW

Model spec snapshot

Representative numeric specifications from this generator.

87 kWStandby

34,833.04 lbWeight

How the Cummins Onan C1250 D2R 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

87 kW

6% below avg

49th percentile

Dry weight

34,833 lb

876% above avg

99th percentile

Oil capacity

13.21 gal

217% above avg

99th percentile

Standby power87 kW

Low 60 kWAverage 93 kWHigh 144.5 kW

About 6% below the similar-output Cummins Onan average. Around the 49th percentile for this field.

Dry weight34,833 lb

Low 1,881 lbAverage 3,569 lbHigh 6,592 lb

About 876% above the similar-output Cummins Onan average. Around the 99th percentile for this field.

Oil capacity13.21 gal

Low 1.22 galAverage 4.16 galHigh 8.19 gal

About 217% above the similar-output Cummins Onan average. Around the 99th percentile for this field.

This model Peer average

Generator information

Manufacturer	Cummins Onan
Model	C1250 D2R
Generator type	Generator
Fuel	Diesel
Frequency	50 Hz

Electrical output

Standby power	87 kW
Prime power	1120 kW
Standby kVA	1400.0
Voltage options	255/440 V, 240/416 V, 230/400 V, 220/380 V, 277/480 V
Phase	A (U) / B (V) / C (W)

Engine, cooling and controls

Engine model	Cummins/Onan KTA 50 G3
Engine displacement	3, 069 cu in (50.3 L)
Aspiration / cooling	Turbocharged-Aftercooled
Rated engine speed	1800 rpm
Engine oil capacity	67.1 gal (254 L)
Engine coolant capacity	92.7 gal (351 L)
Oil capacity	13.2 gal (50 L)
Maximum ambient	122 °F (50 °C)
Controller	PCC3.3 MLD, PowerCommand 3.3
Alternator	Stamford/AvK P7
Emissions	UR

Physical specifications

Dry weight	34, 833 lb (15, 800 kg)
Dimensions (L × W × H)	238.5 × 96 × 96 in (6058 × 2438 × 2438 mm)

Battery

Battery voltage	24 V
Battery quantity	2

Fuel system and runtime

Fuel tank	17, 963.7 gal (68, 000 L)

Maintenance and service parts

Engine oil	Specification: Lube Oil Filter Types: Five spin-on, full flow; Capacity: 177
Coolant	Capacity: 440.0 l

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.