HomeCummins/OnanCummins/Onan QSG12

Cummins/Onan QSG12 Generator Set

The Cummins/Onan QSG12 is a 369 kW (400 kVA) standby generator set powered by a Cummins/Onan QSG12-G1 engine. It is available at 50 V and 60 V, 50 Hz. It holds about 34.1 L (9.0 gal) of oil and 48 L (12.7 gal) of coolant, with a maximum ambient rating of 55 °C. The set measures 2293×1083×1705 mm (90.3×42.6×67.1 in) and weighs about 1110 kg (2447 lb).

369 kW
Standby
11.8 L
Displacement
34.1 L
Oil capacity
3
Document types

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Specifications

Frequency50.0 Hz
Standby power369 kW
Standby kVA400
Prime power322 kW
ControllerCM2880 ECM
Oil capacity34.1 L
Voltage options50 V, 60 V
Coolant capacity48.0 L
Max ambient55 °C
Dimensions (L×W×H)2293×1083×1705 mm
Dry weight1110 kg

Engine

Cummins/Onan QSG12-G1
Displacement11.8 L
Aspirationturbocharged, charge air cooled
Rated speed1500 rpm

Common questions

What is the power rating of the Cummins/Onan QSG12?

The Cummins/Onan QSG12 is rated 369 kW standby (400.0 kVA).

What engine does the Cummins/Onan QSG12 use?

The Cummins/Onan QSG12 is powered by the Cummins/Onan QSG12-G1 engine.

Parts

6model family
Part #DescriptionQtySystem
QSB4.5Service part / kit yemparts $34.95
QSB6.7Service part / kit woodline $8.51
QSF2.8Service part / kit yemparts $50.43
QSF3.8Service part / kit yemparts $54.51
QSG12Service part / kit yemparts $202.18
QSX15QSZ13*Service part / kit industrialinjection $2.50

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
25% standby25%22.05.7
50% standby50%41.010.8
75% standby75%60.015.9
Continuous power100%73.019.2
Prime100%82.021.5
Standby100%92.024.2

Available documents

Engine specSpec sheetReference