HomeCummins/OnanCummins/Onan DFCC

Cummins/Onan DFCC Generator Set

The Cummins/Onan DFCC is a 350 kW (438 kVA) diesel standby generator set powered by a Cummins/Onan NTA855-G3 engine. It is available at 110/190 V, 115/200 V, 120/208 V, 127/220 V, 139/240 V, 120/240 V, 220/380 V, 240/415 V, 254/440 V, 277/480 V and 347/600 V, 3-phase and 60 Hz. It holds about 37.9 L (10.0 gal) of oil and 51.1 L (13.5 gal) of coolant, with a maximum ambient rating of 50 °C. The set measures 3607×1270×1615 mm (142.0×50.0×63.6 in) and weighs about 3289 kg (7251 lb).

350 kW
Standby
14.0 L
Displacement
37.9 L
Oil capacity
3
Document types

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power350 kW
Standby kVA438
Prime power315 kW
ControllerPowerCommand
Oil capacity37.9 L
Voltage options110/190 V, 115/200 V, 120/208 V, 127/220 V, 139/240 V, 120/240 V, 220/380 V, 240/415 V, 254/440 V, 277/480 V, 347/600 V
Phase3
Coolant capacity51.1 L
Max ambient50 °C
Dimensions (L×W×H)3607×1270×1615 mm
Dry weight3289 kg

Engine

Cummins/Onan NTA855-G3
Oil capacity37.9 L
Coolant capacity51.1 L
Displacement14.0 L
AspirationTurbocharged and Aftercooled
Rated speed1800 rpm

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filter find
Belt find
Coolant filter find
Fuel filter find
Oil
Oil filter find

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Parts

16
Part #DescriptionQtySystem
102-1335Plug, Oil Drain1Plug buy
193-0432Sender, Oil Temperature (S2 Engine Block, E4 Oil Pan)2Sensor buy
307-2621-02Relay, Start Solenoid (K4)1Relay buy
309-0269Switch, Temperature - Low Engine Temperature (S4)1Switch ironwing $32.86
319-2236Bracket, Mounting1Bracket buy
504-0011Valve, Shutoff (1/2”)1Valve buy
505-0019Bushing, Pipe - Reducer 1/2” to 3/8”, DFBF (1/2” to 3/8”) 505-0131 DFCB, DFCC, DFCE (3/4” to 3/8”)1Bushing buy
505-0100Nipple, Pipe - Close (1/2”)1Nipple buy
508-0292Washer, Sealing - Copper1Washer buy
518-0548-58Clamp, Hose3Clamp buy
526-0029Washer, Flat (3/8)1Washer buy
526-0219Washer, Flat (1/2)2Washer buy
800-0048Screw, Cap - Hex Head (3/8-16 x 3/4”)1Screw buy
800-0092Screw, Cap - Hex Head (1/2-13 x 1.5)2Screw buy
850-0050Washer, Lock - Spring (3/8”)4Washer buy
870-0212Nut, Locking (1/4-20)4Nut buy

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime25%29.07.6
Prime50%47.012.5
Prime75%65.017.3
Prime100%85.022.4
Standby25%30.08.0
Standby50%51.013.4
Standby75%72.019.0
Standby100%92.024.4

Available documents

Spec sheetParts manualService manual