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Home›Cummins/Onan›Cummins/Onan QSB5.9

Cummins/Onan QSB5.9 Generator Set

The Cummins/Onan QSB5.9 is a 175 kW (184 kVA) High Speed Diesel prime generator set powered by a Cummins/Onan QSB5.9-G1 engine. It is available at 415 V, 3-phase, 50 Hz and rated 223 A. It holds about 14.2 L (3.8 gal) of oil and 25.6 L (6.8 gal) of coolant. The set measures 1066×642×1029 mm (42.0×25.3×40.5 in), weighs about 2528 kg (5573 lb) and produces 75 dBA at 1 m. An integrated tank holds 290 L (76.6 gal).

5.88 L
Displacement
14.2 L
Oil capacity
3
Document types

How to read your Cummins/Onan serial & model number →

Specifications

FuelHigh Speed Diesel
Frequency50.0 Hz
Prime power175 kW
ControllerPS0602, PowerCommand 1.1
Oil capacity14.2 L
Voltage options415 V
Phase3
Rated current223 A
Power factor0.8
Battery voltage24 V
Battery quantity2
Coolant capacity25.6 L
Dimensions (L×W×H)1066×642×1029 mm
Dry weight2528 kg
Sound level75.0 dBA @ 1 m
Fuel tank290.0 L

Engine

Cummins/Onan QSB5.9-G1
Oil capacity12.3 L
Coolant capacity15.7 L
Displacement5.88 L
AspirationTurbocharged, Charge Air Cooled
Rated speed1500 rpm

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Fuel filter—500 hr find

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

Common questions

What engine does the Cummins/Onan QSB5.9 use?

The Cummins/Onan QSB5.9 is powered by the Cummins/Onan QSB5.9-G1 engine.

What fuel does the Cummins/Onan QSB5.9 use?

The Cummins/Onan QSB5.9 runs on High Speed Diesel.

What is the oil capacity of the Cummins/Onan QSB5.9?

The Cummins/Onan QSB5.9-G1 engine in the Cummins/Onan QSB5.9 has an oil capacity of 12.3 liters.

Fuel consumption

RatingLoadL/hgal/h
Prime75%31.95
Prime100%35.95

Available documents

Engine specReferenceOwner's manual