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Cummins/Onan OF Generator Set

The Cummins/Onan OF is a 330 kW (440 kVA) Diesel standby generator set powered by a Cummins/Onan OFN engine. It is available at 120/240 V, 240/480 V, 277/480 V, 347/600 V, 220/380 V, 230/400 V and 254/440 V, 3-phase, 60 Hz and rated 1200 A. It holds about 10 L (2.6 gal) of oil and 10 L (2.6 gal) of coolant, with a maximum ambient rating of 45 °C. Starting uses 1 group-24 battery rated 1000 CCA at 24 V. The set measures 1400×800×1000 mm (55.1×31.5×39.4 in), weighs about 300 kg (661 lb) and produces 70 dBA at 7 m. An integrated tank holds 100 L (26.4 gal), roughly 8 hours of runtime.

330 kW
Standby
10.0 L
Displacement
10.0 L
Oil capacity
2
Document types

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power330 kW
Standby kVA440
Prime power330 kW
EmissionsTier 4
ControllerElectronic
Oil capacity10.0 L
AlternatorCummins/Onan OFN
Voltage options120/240 V, 240/480 V, 277/480 V, 347/600 V, 220/380 V, 230/400 V, 254/440 V
Phase3
Rated current1200 A
Power factor0.8
Circuit breaker1200 A
Battery group24
Battery cranking1000 CCA
Battery voltage24 V
Battery quantity1
Coolant capacity10 L
Max ambient45 °C
Dimensions (L×W×H)1400×800×1000 mm
Dry weight300 kg
Sound level70.0 dBA @ 7 m
Fuel tank100.0 L
Tank runtime8 hr

Engine

Cummins/Onan OFN
Oil capacity10.0 L
Coolant capacity10.0 L
Displacement10.0 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan OFN
ItemSpecCapacityPart #Interval
Air filterOnan×1—200 hr find
Fuel filterOnan×1—200 hr find
Oil filterOnan×1503-0616200 hr PartsGeek
BeltOnan×1—200 hr find
Coolant filterOnan×1—200 hr find
Oil10W-3010.0 L—200 hr

Common questions

What is the power rating of the Cummins/Onan OF?

The Cummins/Onan OF is rated 330 kW standby (440.0 kVA).

What engine does the Cummins/Onan OF use?

The Cummins/Onan OF is powered by the Cummins/Onan OFN engine.

What fuel does the Cummins/Onan OF use?

The Cummins/Onan OF runs on Diesel.

What is the oil capacity of the Cummins/Onan OF?

The Cummins/Onan OFN engine in the Cummins/Onan OF has an oil capacity of 10.0 liters.

What alternator does the Cummins/Onan OF use?

The Cummins/Onan OF uses a Cummins/Onan OFN alternator.

What oil filter does the Cummins/Onan OF use?

The Cummins/Onan OF uses oil filter part number 503-0616.

Fuel consumption

RatingLoadL/hgal/h
Prime60%10.03.5
Standby60%10.03.5

Available documents

Operator's manual — 965-0122 Onan 4.0KW BFA (spec C) Operator's Manual (04-1981)Parts manual — ONAN 400KW DFN PARTS MANUAL 9600224 (Cummins/Onan)