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Cummins Onan C125 D6C Specs (Power | Fuel Consumption)

The Cummins Onan C125 D6C generator is listed with standby output of 125 kW, Diesel fuel, 60 Hz operation, 5 available voltage configurations, and Single and three phase.

Cummins Onan Generator Specifications

Generator • Diesel • 60 Hz • Single and three phase

Standby power: 125 kWVoltage options: 5 configurationsDry weight: 2,586 lb (1,173 kg)

Key specifications

125 kW Standby power
Diesel Fuel
5 configurations Voltage options
Single and three phase Phase
2,586 lb (1,173 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

48.3 kW

Peer average

31.8 kW

95th percentile
Power output
Low 112 kW High 125 kW
Standby

125 kW

Prime

112 kW

Model spec snapshot
Representative numeric specifications from this generator.
125 kWStandby
2,586.02 lbWeight

How the Cummins Onan C125 D6C 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
125 kW
34% above avg
82nd percentile
Dry weight
2,586 lb
28% below avg
37th percentile
Standby power125 kW
Low 60 kWAverage 93 kWHigh 144.5 kW

About 34% above the similar-output Cummins Onan average. Around the 82nd percentile for this field.

Dry weight2,586 lb
Low 1,881 lbAverage 3,569 lbHigh 6,592 lb

About 28% below the similar-output Cummins Onan average. Around the 37th percentile for this field.

This model Peer average

Generator information

Manufacturer Cummins Onan
Model C125 D6C
Generator type Generator
Fuel Diesel
Frequency 60 Hz

Electrical output

Standby power 125 kW
Prime power 112 kW
Voltage options 120/240 V, 120/208 V, 277/480 V, 347/600 V, 127/220 V
Phase Single and three phase

Engine, cooling and controls

Engine model Cummins/Onan QSB5
Engine displacement 275 cu in (4.5 L)
Aspiration / cooling Turbocharged and charge air cooled
Rated engine speed 2150 rpm
Controller PowerCommand 2.3
Emissions EPA Tier 3

Physical specifications

Dry weight 2, 586 lb (1, 173 kg)
Dimensions (L × W × H) 97.7 × 38 × 52 in (2482 × 965 × 1321 mm)

Battery

Battery cranking 850 CCA

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

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