The Cummins Onan MDKB generator is listed with standby output of 4 kW, diesel fuel, 50 Hz operation, 6 available voltage configurations, Single phase, rated current of 41.7 A, and sound level of 71 dBA @ 3 ft (1 m).
Generator • diesel • 50 Hz • Single phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
0.3 gal/hr
0.27 gal/hr
0.35 gal/hr
0.44 gal/hr
0.55 gal/hr
9.3 kW
24.1 kW
4 kW
4 kW
How the Cummins Onan MDKB compares
This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.
About 36% below the similar-output Cummins Onan average. Around the 36th percentile for this field.
About 37% above the similar-output Cummins Onan average. Around the 77th percentile for this field.
About 38% below the similar-output Cummins Onan average. Around the 50th percentile for this field.
About 6% above the similar-output Cummins Onan average. Around the 81st percentile for this field.
About 35% above the similar-output Cummins Onan average. Around the 70th percentile for this field.
Generator information
| Manufacturer | Cummins Onan |
|---|---|
| Model | MDKB |
| Generator type | Generator |
| Fuel | diesel |
| Frequency | 50 Hz |
Electrical output
| Standby power | 4 kW |
|---|---|
| Prime power | 4 kW |
| Standby kVA | 4.0 |
| Voltage options | 110 V, 220 V, 115 V, 230 V, 120 V, 240 V |
| Phase | Single phase |
| Rated current | 41.7 A |
Engine, cooling and controls
| Oil capacity | 1.06 gal (4 L) |
|---|---|
| Coolant capacity | 8 quart (7.6 liter) L |
| Controller | A1 |
| Alternator | Single-Bearing, Brushless 4-Pole Rotating Field with Digital Electronic Regulation (4-pole) |
| Emissions | EPA Tier 3 |
Physical specifications
| Dry weight | 430 lb (195 kg) |
|---|---|
| Dimensions (L × W × H) | 26.1 × 20.1 × 20.6 in (662 × 511 × 524 mm) |
| Sound level | 71 dBA @ 3 ft (1 m) |
Battery
| Battery cranking | 360 / 500 CCA |
|---|---|
| Battery voltage | 12 volts / 24 volts V |
Fuel consumption
| Standby | 0.3 gal/h (0.8 L/h) @ 0%; 0.4 gal/h (1.0 L/h) @ 1%; 0.27 gal/h (1.3 L/h) @ 25%; 0.35 gal/h (1.7 L/h) @ 50%; 0.44 gal/h (2.1 L/h) @ 75%; 0.55 gal/h @ 100% |
|---|---|
| Full load | 3.0 gal/h (4.9 L/h) @ 100%; 0.6 gal/h (2.3 L/h) |
| Half load | 1.8 gal/h (3.0 L/h) @ 50%; 0.35 gal/h (1.3 L/h) |
Maintenance and service parts
| Engine oil | Interval: 500 hr; Specification: Change Engine Oil and Oil Filter; Capacity: 2.1 liter |
|---|---|
| Oil filter | Interval: 1000 hr; Specification: Oil Filter |
| Fuel filter | Part number: 149-2106; Interval: 500 hr; Specification: Drain Fuel Filters |
| Air filter | Interval: 500 hr |
| Coolant | Interval: 2000 hr; Specification: Replace Coolant, Pressure Cap & Thermostat; Capacity: 2.1 liter |
| Belt | Interval: 1000 hr; Specification: Check V-Belt Tension |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.