HomeCummins/OnanCummins/Onan QSB5-series

Cummins/Onan QSB5-series Generator Set

The Cummins/Onan QSB5-series is a 70 kW (119 kVA) standby generator set powered by a Cummins/Onan QSB5 engine. It is available at 120/240 V, 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V and 347/600 V, 3-phase and 60 Hz. Starting uses battery rated 650 CCA. The set measures 2184×1092×1727 mm (86.0×43.0×68.0 in).

70 kW
Standby
4.5 L
Displacement
1
Document types

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

Specifications

Frequency60.0 Hz
Standby power70 kW
EmissionsEPA-certified Tier 4 Final
ControllerPowerCommand 3.3
Voltage options120/240 V, 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V, 347/600 V
Phasethree-phase
Power factor0.8
Battery cranking650 CCA
Dimensions (L×W×H)2184×1092×1727 mm

Engine

Cummins/Onan QSB5
Displacement4.5 L
AspirationTurbocharged and charge air cooled
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan QSB5
ItemSpecCapacityPart #Interval
Air filter
Fuel filter
Oil filter
Battery
Belt
Coolant
OilLube oil filter type(s)
Spark plug

Common questions

How many kW is the Cummins/Onan QSB5-series?

The Cummins/Onan QSB5-series is rated 70 kW standby.

Which engine powers the Cummins/Onan QSB5-series?

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

Parts

1
Part #DescriptionQtySystem
3666496Service part / kit Amazon eBay $102.95

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.

Available documents

Spec sheet — A042J399 (Cummins/Onan)