Specifications
| Frequency | 50.0 Hz |
|---|---|
| Standby power | 320 kW |
| Standby kVA | 400 |
| Prime power | 365 kW |
| Controller | PowerCommand |
| Oil capacity | 40.0 L |
| Alternator | QSG12-G4 |
| Voltage options | 277 V, 480 V, 220 V, 380 V, 254 V, 440 V, 127 V, 240 V, 416 V, 115 V, 200 V, 230 V, 400 V, 110 V, 190 V |
| Phase | A (U), B (V), C (W) |
| Battery voltage | 24 V |
| Battery quantity | 100 |
| Coolant capacity | 122 L |
| Dimensions (L×W×H) | 3549×1100×2115 mm |
| Dry weight | 3493 kg |
Engine
| Oil capacity | 40.0 L |
|---|---|
| Coolant capacity | 51.0 L |
| Displacement | 8.55 L |
| Aspiration | turbocharged |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Cummins/Onan NT855| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | If the engine is equipped with an oil bath type air cleaner, fill to the level indicated with oil of the same viscosity as used in the crankcase. However, a non-detergent (straight mineral) oil is recommended. | — | 1000 hr | ||
| Fuel filter | — | 500 hr | |||
| Oil filter | — | 1000 hr | |||
| Battery | Batteries will self discharge very quickly when installed where the ambient temperature is consistently above 90°F, such as in a boiler room. To lengthen battery life dilute the electrolyte from its normal 1.275 specific gravity reading at full charge to a 1.225 reading. | — | 500 hr | ||
| Belt | — | 1000 hr | |||
| Coolant | For units which use either a radiator or heat exchanger (city water cooled), fill the cooling system with clean soft water, The standard radiator and block capacity is 21 U.S. gallons. Use a good rust and scale inhibitor. If there is any possibility of a radiator cooled plant being exposed to freezing temperatures, use antifreeze with ethylene glycol base as instructed in the Cummins manual. | 80.63 L | — | 5000 hr | |
| Coolant filter | Refer to Cummins engine Operation and Maintenance Manual. | — | |||
| Oil | — | 100 hr | |||
| Spark plug | — | 1000 hr |
Common questions
What is the power rating of the Cummins/Onan C400 D6?
The Cummins/Onan C400 D6 is rated 320 kW standby (400.0 kVA).
Which engine powers the Cummins/Onan C400 D6?
The Cummins/Onan C400 D6 is powered by the Cummins/Onan NT855 engine.
What's the oil capacity on a Cummins/Onan C400 D6?
The Cummins/Onan NT855 engine in the Cummins/Onan C400 D6 has an oil capacity of 40.0 liters.
What alternator does the Cummins/Onan C400 D6 use?
The Cummins/Onan C400 D6 uses a QSG12-G4 alternator.
Parts
99| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 0300-4623-08 | DFBF (600V) | 1 | Current transformer | Amazon eBay |
| 0300-4623-23 | DFBF BR (0-480V) | 1 | Current transformer | Amazon eBay |
| 193-0432 | Sender, Oil Temperature (S2 Engine Block, E4 Oil Pan) | 2 | Sensor | Amazon eBay |
| 1S0A713 | Bracket, Overspeed Switch | 1 | Bracket | Amazon |
| 1S0A717 | Switch Assy., Overspeed | 1 | Switch | Amazon |
| 204493 | Ring, Collector | 1 | Ring | Amazon FridayParts $27.10 |
| 2110153 | Bell, End - Alt, to Exciter | 1 | Bell | Amazon eBay |
| 23201396 | Support, Gen. Mtg. | 1 | Support | Amazon |
| 232A1817 | Generator | 3 | Generator | Amazon eBay |
| 2340116 | Cover, Exciter | 1 | Cover | Amazon |
| 234070 | Rig Assy., Brush- Incl. Brushes, & Contact Point Band, Gen. - Front Portion(Narrow) | 1 | Brush | Amazon eBay |
| 2348115 | Bracket, Mtg. - Volt. Cont. Reactor | 1 | Bracket | Amazon |
| 234875 | Bracket, Gate Reactor Mtg. | 1 | Bracket | Amazon |
| 234C134 | 3-Phase | 1 | Phase | Amazon |
| 234C137 | 3-Phase | 1 | Phase | Amazon |
| 234C140 | Single Phase | 1 | Phase | Amazon |
| 234C141 | Single Phase | 1 | Phase | Amazon |
| 2I4AM | Brush | 4 | Brush | Amazon |
| 301A1914 | Bracket, Panel Stop | 1 | Bracket | Amazon eBay |
| 302P421 | Scale Reads 0-300 | 1 | Voltmeter | Amazon eBay $240.00 |
| 302P465 | RESISTOR-STABILIZING | 1 | Meter | Amazon eBay |
| 302P466 | For 220/380-V, 3-Ph, 60-Cycle (Model H) | 1 | Meter | Amazon eBay |
| 302P468 | For 120/208-V,120/240-V, & 347/600-V 3PH. 50 Cy!. (825-Ohm, 75-Watt) | 1 | Meter | Amazon eBay |
| 302P469 | For 220/380-V, 3Ph. 50-Cycle | 1 | Meter | Amazon eBay |
| 302P470 | For 277/480-V, 3-Ph, 50-Cyclo (5-P!) | 1 | Meter | Amazon eBay |
| 3044125 | 15,000-Ohm, 25-W - For 220/380-V, 3-Phase, 4-Wire | 1 | Resistor | Amazon |
| 304A15 | S Washer, Fixed Resistor Cent. to Alternator End Bell | 2 | Washer | Amazon eBay |
| 304PA76 | Resistor, Volt. Cont.Reactor (Incl.in Rect.& Resistor A: 305P218) | 1 | Resistor | Amazon |
| 3058227 | Resistor Assy., Rect, & Incl. (Incl.in Rect. & Resistor A: 305P218) | 4 | Resistor | Amazon |
| 305P233 | Rectifier Assy., Power (Incl. two #305P234 wire & hardware) | 2 | Rectifier | Amazon eBay |
| 305P234 | Rectifier Assy., Power (Field) (Incl. in Rect. #305P218) | 2 | Rectifier | Amazon eBay |
| 305P240 | Rectifier, Volt. Cont.Reactor (Incl.in Rect. & Resistor A: 305P218) | 1 | Reactor | Amazon eBay |
| 307-2621-02 | Relay, Start Solenoid (K4) | 1 | Relay | Amazon eBay |
| 309-0269 | Switch, Low Engine Temperature (S4) | 1 | Sensor | Amazon eBay |
| 319-2236 | Bracket, Mounting | 1 | Bracket | Amazon eBay |
| 3320645 | Strip, Marker - Volt. Con. Reactor (9305P218) | 1 | Strip | Amazon |
| 3ISA78 | Rectifier, Voltage Control | 1 | Rectifier | Amazon |
| 505-0019 | Bushing, Pipe - Reducer 1/2” to 3/8”, DFBF (1/2” to 3/8”) 505-0131 DFCB, DFCC, DFCE (3/4” to 3/8”) | 1 | Bushing | Amazon eBay |
| 508-0292 | Washer, Sealing - Copper | 1 | Washer | Amazon eBay |
| 518-0548-58 | Clamp, Hose | 3 | Clamp | Amazon eBay |
| 5208190 | Stud, Fixed Resistor Mtg. | 1 | Stud | Amazon |
| 526-0029 | *Washer, Flat (1/2") | 1 | Washer | Amazon eBay |
| 800-0092 | Screw, Cap - Hex Head (1/2-13 x 1.5) | 2 | Screw | Amazon eBay |
| 805-35 | Bolt, Place - Gen. Mtg. support to End Bell | 4 | Bolt | Amazon eBay |
| 960-0504 | PCC Control Service Manual | * | Service manual | Amazon eBay |
| 960-0507 | Detector Control Service Manual | ** | Service manual | Amazon eBay $49.00 |
| A956 | 2-12 VOLT BATTERIES | 2 | Battery | Amazon eBay |
| DM-3010461 | Crankshaft Rear Seal - NT855, NTC855 | 1 | Seal | Amazon eBay |
| FP-KS12622A | NH/NT855 In-Frame Kit w/upper gasket set & oil pan gasket | 1 | Gasket | Amazon eBay |
| FP-KS12622C | NH/NT855 In-Frame Kit w/upper gasket set & oil pan gasket | 1 | Gasket | Amazon eBay |
| FP-KS12622C7 | NH/NT855 In-Frame Kit w/upper gasket set & oil pan gasket | 1 | Gasket | Amazon eBay |
| FP-KS12622D | NH/NT855 In-Frame Kit w/upper gasket set & oil pan gasket | 1 | Gasket | Amazon eBay |
| M-4024945 | Edge molded rubber head gaskets set | Gasket | Amazon eBay | |
| 102-1335 | Plug, Oil Drain | 1 | Service part / kit | Amazon eBay |
| 102206606 | Safety Messages | Service part / kit | Amazon eBay | |
| 232A1489 | Generator support shim, 0.598 in gauge #6, 3x3 | 2 | Service part / kit | Amazon eBay |
| 232A1490 | Generator support shim, 0.359 in gauge #20, 3x3 | 2 | Service part / kit | Amazon eBay |
| 301021151 | Box Only, control | 1 | Service part / kit | Amazon |
| 30118301 | Bracket, Cont.Box Mtg. (Repl. 2-Piece Brkts) | 1 | Service part / kit | Amazon |
| 301A2727 | Handle , Control Box | 1 | Service part / kit | Amazon |
| 302-213 | 60-Cycle | 1 | Service part / kit | Amazon |
| 302-234 | .Cycle | 1 | Service part / kit | Amazon eBay |
| 3028448 | Plate, Mater Face | 1 | Service part / kit | Amazon eBay $74.95 |
| 302P411 | ~~ Scale Reads 0-200 (1-Phase Use 2) | 1 | Service part / kit | Amazon eBay |
| 302P412 | Scale Reads 0-250 | 1 | Service part / kit | Amazon eBay |
| 302P414 | Amm, Scale Reads 0-300 - Replaces 302-14. | 1 | Service part / kit | Amazon eBay |
| 302P415 | Ammeter Scale Reads 0-500 - Replaces 302-371. | 1 | Service part / kit | Amazon eBay |
| 302P422 | Scale Reads 0-600 | 1 | Service part / kit | Amazon eBay |
| 302P423 | Scale Reads 0-750 on side of Gen | 1 | Service part / kit | Amazon eBay |
| 302P467 | For 277/480 Volt,3 Phase, 60 Cycle Plants. | 1 | Service part / kit | Amazon eBay |
| 303-111 | Rheostat, Volt. Reg. - 175-Ohm, (Model H) | 1 | Service part / kit | Amazon |
| 303-32 | Knob, Rheos | 1 | Service part / kit | Amazon |
| 3040305 | 45, 000-Ohm, 10-W - For 480-V , 3-Ph, 3-Wire & 277/480-V, 3+ Ph. | 1 | Service part / kit | Amazon |
| 308-22 | Switch, Volt. & Current Selector Ammeter | 1 | Service part / kit | Amazon eBay FridayParts $47.99 |
| 32082 | 3-Phase Models | 1 | Service part / kit | Amazon |
| 320B18 | Single Phase Models | 1 | Service part / kit | Amazon eBay |
| 337A44 | Strap, Grd. - Unhoused Plants | 1 | Service part / kit | Amazon eBay |
| 402-78 | Rubber, Mtg. - Cont. Box | 4 | Service part / kit | Amazon eBay |
| 504-0011 | Valve, Shutoff (1/2”) | 1 | Service part / kit | Amazon eBay |
| 505-0100 | Nipple, Pipe - Close (1/2”) | 1 | Service part / kit | Amazon eBay $9.34 |
| 526-0219 | Washer, Flat (1/2) | 2 | Service part / kit | Amazon eBay |
| 800-0048 | Screw, Cap - Hex Head (3/8-16 x 3/4”) | 1 | Service part / kit | Amazon eBay |
| 850-0050 | Washer, Lock - Spring (3/8”) | 4 | Service part / kit | Amazon eBay |
| 870-0212 | Nut, Locking (1/4-20) | 4 | Service part / kit | Amazon eBay |
| 960-0138 | Service part / kit | Amazon eBay | ||
| 960-0606 | Service part / kit | Amazon eBay | ||
| FP-855PREM | NH/NT855 Premium Cylinder Kits | 1 | Service part / kit | Amazon eBay |
| FP-855TT | NT855 Premium 3-Ring Cylinder Kits | 1 | Service part / kit | Amazon eBay |
| FP-855TTDN | NT855 Premium 3-Ring Cylinder Kits Dual-NI Pistons | 1 | Service part / kit | Amazon eBay |
| FP-855TTP | NT855 Premium Plus 3-Ring Cylinder Kits | 1 | Service part / kit | Amazon eBay |
| FP-855TTPDN | NT855 Premium Plus 3-Ring Cylinder Kits Dual-NI Pistons | 1 | Service part / kit | Amazon eBay |
| FP-IFK855NR | NT855 Cylinder Kits w/ no piston rings | 1 | Service part / kit | Amazon eBay |
| FP-IFK855PREM | NH/NT855 Premium Cylinder Kits | 1 | Service part / kit | Amazon eBay |
| FP-IFK855TT | NT855 Premium 3-Ring Cylinder Kits | 1 | Service part / kit | Amazon eBay |
| FP-IFK855TTDN | NT855 Premium 3-Ring Cylinder Kits Dual-NI Pistons | 1 | Service part / kit | Amazon eBay |
| FP-IFK855TTP | NT855 Premium Plus 3-Ring Cylinder Kits | 1 | Service part / kit | Amazon eBay |
| FP-IFK855TTPDN | NT855 Premium Plus 3-Ring Cylinder Kits Dual-NI Pistons | 1 | Service part / kit | Amazon eBay |
| FP-KS12621C | NH/NT855 Cylinder Kit Std Head Gask Grommets | 1 | Service part / kit | Amazon eBay |
| FP-KS12621C7 | NH/NT855 Cylinder Kit .010 Head Gask Grommets | 1 | Service part / kit | Amazon eBay |
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 — S-6337-EN (Cummins/Onan)Spec sheet — S-6411-EN (Cummins/Onan)Spec sheet — SS10-CPGK (Cummins/Onan)