Specifications Frequency 60.0 Hz Standby power 40 kW Standby kVA 50 Controller PowerCommand 1.1 Oil capacity 4.3 L Voltage options 120/240 V, 120/208 V, 277/480 V Phase 1 Battery group ['26 standard', '34 high capacity'] Battery cranking 550 CCA Battery voltage 12 V Coolant capacity 50 L Max ambient 50 °C Dimensions (L×W×H) 2225×864×1123 mm Dry weight 1508 kg Wet weight 1137 kg
Engine Cummins/Onan QSJ2.4 Coolant capacity 12.8 L Displacement 2.4 L Aspiration Turbocharged Aftercooled Rated speed 1800 rpm
Maintenance & consumables for the Cummins/Onan QSJ2.4 Item Spec Capacity Part # Interval Fuel filter Every 500 hours of operation or as needed, whichever comes first — 500 hr find Oil filter Every 1000 hours of operation or as needed, whichever comes first — 1000 hr find Oil 500 miles or 6 months, whichever comes first — 804 hr
Common questions What is the power rating of the Cummins/Onan C40 N6? The Cummins/Onan C40 N6 is rated 40 kW standby (50.0 kVA).
What engine does the Cummins/Onan C40 N6 use? The Cummins/Onan C40 N6 is powered by the Cummins/Onan QSJ2.4 engine.
Troubleshooting 2 Symptoms & remedies Symptom Cause Remedy Any spillage that occurs during fueling or during oil top-off or oil change must be cleaned up before starting the generator set. Clean up any spillage before starting the generator set. Fire Hazard Contaminated insulation is a fire hazard. Remove any contaminated insulation and dispose of it in accordance with local regulations.
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts 13 Part # Description Qty System A046N983 Preventive Maintenance Kit –Heavy Duty 2 Air filter PartsGeek A046N985 Preventive Maintenance Kit (Normal Duty Air Filter) 2 Air filter PartsGeek A046N987 Preventive Maintenance Kit (Normal Duty Air Filter) 2 Air filter PartsGeek CA115-T12 Large, Oil Cooler Oil filter PartsGeek CA135-E12 Large, Oil Cooler Oil filter PartsGeek A046J612 Base Barrier – Elevated Genset 1 Service part / kit PartsGeek A046L270 Instruction Sheet 1 Service part / kit PartsGeek CA115-H14 Small Service part / kit PartsGeek CA115-J12 Small Service part / kit PartsGeek CA115-L14 Small Service part / kit PartsGeek CA115-M12 Large Service part / kit PartsGeek CA115-P12 Large Service part / kit PartsGeek CA115-R12 Large Service part / kit PartsGeek
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 Rating Load L/h gal/h Prime 193.6 Standby 519.0
Available documents (Cummins/Onan) (Cummins/Onan) (Cummins/Onan) (Cummins/Onan) (Cummins/Onan) (Cummins/Onan) (Cummins/Onan) (Cummins/Onan) (Cummins/Onan)