Why specify a Cummins engine
Cummins is the benchmark for high-duty diesel power. Its QSB, QSL, QSZ, QSK and KTA families deliver proven reliability, dense service coverage and excellent fuel efficiency, which makes them the first choice for data centres, hospitals and continuous-duty industrial applications.
- Global service network in 190 countries
- Full-authority electronic fuel management
- Up to 2,000 kVA at 50 Hz with paralleling options
Cummins powered generator sets
Every rating we list for this engine platform, with the engine model for each.
| Model | Standby Power (kVA) | Standby Power (kW) | Prime Power (kVA) | Prime Power (kW) | Engine Model | Data Sheet |
|---|---|---|---|---|---|---|
| CM-CU33 | 33 | 26.4 | 30 | 24 | 4B3.9-G12 | [EN] |
| CM-CU44 | 44 | 35.2 | 40 | 32 | 4BT3.9-G1 | [EN] |
| CM-CU44A | 44 | 35.2 | 40 | 32 | 4BT3.9-G2 | [EN] |
| CM-CU55 | 55 | 44 | 50 | 40 | 4BTA3.9-G2 | [EN] |
| CM-CU66 | 66 | 52.8 | 60 | 48 | 4BTA3.9-G2 | [EN] |
| CM-CU88 | 88 | 70.4 | 80 | 64 | 4BTA3.9-G11 | [EN] |
| CM-CU110 | 110 | 88 | 100 | 80 | 6BT5.9-G2 | [EN] |
| CM-CU125 | 125 | 100 | 112.5 | 90 | 6BTA5.9-G2 | [EN] |
| CM-CU138 | 138 | 110.4 | 125 | 100 | 6BTAA5.9-G2 | [EN] |
| CM-CU150 | 150 | 120 | 138 | 110.4 | 6BTAA5.9-G2 | [EN] |
| CM-CU165 | 165 | 132 | 150 | 120 | 6BTAA5.9-G12 | [EN] |
| CM-CU200 | 200 | 160 | 180 | 144 | 6CTA8.3-G2 | [EN] |
| CM-CU220 | 220 | 176 | 200 | 160 | 6CTAA8.3-G2 | [EN] |
| CM-CU275 | 275 | 220 | 250 | 200 | 6LTAA8.9-G2 | [EN] |
| CM-CU300 | 300 | 240 | 275 | 220 | 6LTAA9.5-G3 | [EN] |
| CM-CU330 | 330 | 264 | 300 | 240 | 6LTAA9.5-G1 | [EN] |
| CM-CU358 | 358 | 286.4 | 325 | 260 | 6LTAA9.5-G1 | [EN] |
| CM-CU385 | 385 | 308 | 350 | 280 | NTA855-G4 | [EN] |
| CM-CU440 | 440 | 352 | 400 | 320 | QSNT-G3 | [EN] |
| CM-CU500 | 500 | 400 | 450 | 360 | QSZ13-G5 | [EN] |
| CM-CU513 | 513 | 410 | 500 | 400 | QSZ13-G3 | [EN] |
| CM-CU650 | 650 | 520 | 600 | 480 | KTA19G8 | [EN] |
| CM-CU688 | 688 | 550 | 625 | 500 | KTAA19-G6A | [EN] |
| CM-CU825 | 825 | 660 | 750 | 600 | KTA38G2 | [EN] |
| CM-CU880 | 880 | 704 | 800 | 640 | KTA38G2B | [EN] |
| CM-CU1000 | 1,000 | 800 | 900 | 720 | KTA38G2A | [EN] |
| CM-CU1100 | 1,100 | 880 | 1,000 | 800 | KTA38G5 | [EN] |
| CM-CU1250 | 1,250 | 1,000 | 1,125 | 900 | KTA38G9 | [EN] |
| CM-CU1375 | 1,375 | 1,100 | 1,250 | 1,000 | KTA50G3 | [EN] |
| CM-CU1675 | 1,675 | 1,340 | 1,400 | 1,120 | KTA50G8 | [EN] |
| CM-CU1675A | 1,675 | 1,340 | 1,500 | 1,200 | KTA50GS8 | [EN] |
| CM-CU1760 | 1,760 | 1,408 | 1,625 | 1,300 | QSK38-G32 | [EN] |
| CM-CU1875 | 1,875 | 1,500 | 1,675 | 1,340 | KTA50-G15A | [EN] |
| CM-CU2000 | 2,000 | 1,600 | 1,875 | 1,500 | KTA50-G16A | [EN] |
| Model | Standby Power (kVA) | Standby Power (kW) | Prime Power (kVA) | Prime Power (kW) | Engine Model | Data Sheet |
|---|---|---|---|---|---|---|
| CM-CU35 | 35 | 28 | 31 | 25 | 4B3.9-G12 | [EN] |
| CM-CU55 | 55 | 44 | 50 | 40 | 4BT3.9-G2 | [EN] |
| CM-CU66 | 66 | 53 | 60 | 48 | 4BTA3.9-G2 | [EN] |
| CM-CU75 | 75 | 60 | 68 | 54 | 4BTA3.9-G2 | [EN] |
| CM-CU100 | 100 | 80 | 90 | 72 | 4BTA3.9-G11 | [EN] |
| CM-CU110 | 110 | 88 | 100 | 80 | 6BT5.9-G2 | [EN] |
| CM-CU125 | 125 | 100 | 113 | 90 | 6BT5.9-G2 | [EN] |
| CM-CU150 | 150 | 120 | 138 | 110 | 6BTA5.9-G2 | [EN] |
| CM-CU165 | 165 | 132 | 150 | 120 | 6BTAA5.9-G2 | [EN] |
| CM-CU188 | 188 | 150 | 170 | 136 | 6BTAA5.9-G12 | [EN] |
| CM-CU200 | 200 | 160 | 180 | 144 | 6CTA8.3-G2 | [EN] |
| CM-CU220 | 220 | 176 | 200 | 160 | 6CTA8.3-G2 | [EN] |
| CM-CU250 | 250 | 200 | 225 | 180 | 6CTAA8.3-G2 | [EN] |
| CM-CU275 | 275 | 220 | 250 | 200 | 6CTAA8.3-G9 | [EN] |
| CM-CU300 | 300 | 240 | 275 | 220 | 6LTAA8.9-G2 | [EN] |
| CM-CU344 | 344 | 275 | 313 | 250 | 6LTAA9.5-G1 | [EN] |
| CM-CU350 | 350 | 280 | 313 | 250 | NTA855-G1 | [EN] |
| CM-CU388 | 388 | 310 | 350 | 280 | NTA855-G1B | [EN] |
| CM-CU413 | 413 | 330 | 375 | 300 | QSM11-G2 | [EN] |
| CM-CU440E | 440 | 350 | 400 | 320 | QSM11-G4 | [EN] |
| CM-CU440 | 440 | 350 | 400 | 320 | NTA855-G3 | [EN] |
| CM-CU500 | 500 | 400 | 450 | 360 | KTA19-G2 | [EN] |
| CM-CU523 | 523 | 418 | 475 | 380 | QSZ13-G5 | [EN] |
| CM-CU550 | 550 | 440 | 500 | 400 | KTA19-G3 | [EN] |
| CM-CU600 | 600 | 485 | 550 | 440 | QSZ13-G11 | [EN] |
| CM-CU625 | 625 | 500 | 563 | 450 | KTA19-G3A | [EN] |
| CM-CU688 | 688 | 550 | 625 | 500 | KTAA19-G5 | [EN] |
| CM-CU750 | 750 | 600 | 683 | 546 | KTAA19-G6A | [EN] |
| CM-CU850 | 850 | 680 | 775 | 620 | KT38-G | [EN] |
| CM-CU963 | 963 | 770 | 875 | 700 | KTA38-G1 | [EN] |
| CM-CU1000 | 1,000 | 800 | 910 | 725 | KTA38-G2 | [EN] |
| CM-CU1038 | 1,038 | 830 | 938 | 750 | KTA38-G2B | [EN] |
| CM-CU1100 | 1,100 | 880 | 1,000 | 800 | KTA38-G2A | [EN] |
| CM-CU1250 | 1,250 | 1,000 | 1,138 | 910 | KTA38-G4 | [EN] |
| CM-CU1375 | 1,375 | 1,100 | 1,250 | 1,000 | KTA38-G9 | [EN] |
| CM-CU1513 | 1,513 | 1,260 | 1,375 | 1,100 | KTA50-G3 | [EN] |
| CM-CU1875 | 1,875 | 1,500 | 1,563 | 1,260 | KTA50-G9 | [EN] |
Both 50 Hz and 60 Hz builds are listed. Model codes carry the standby rating and, where two builds share a rating, a trailing letter.
Cummins ratings in the tables follow the engine maker's published standby and prime definitions, not a marketing derating. The QSK60 and KTA19 figures assume a 40 °C ambient cap; above that, expect roughly 1 % output per additional 5 °C and ask us for the exact curve.
Three ways to package a Cummins set
The QSK and KTA families carry enough mass and heat rejection that the enclosure choice changes the installation, not just the appearance.
Cummins sets leave our Fujian plant in whichever of three packages the site calls for. QSK23 and QSK60 units almost always ship containerised, because the radiator, day tank and exhaust silencer no longer fit inside a canopy at that size. Mid-range QSZ13 and QSL9 sets go into acoustic canopies for urban standby. Smaller QSB7 units are frequently supplied on open skids for plant-room integration.
| Typical power range | Up to 4,000 kVA |
|---|---|
| Enclosure | 10 / 20 / 30 / 40 / 45 ft container |
| Ingress protection | IP54 (IP55 optional) |
| Best suited to | QSK23 / QSK60 sets, data centres, multi-set paralleling |
| Typical power range | 10 – 4,000 kVA |
|---|---|
| Enclosure | Galvanised acoustic canopy |
| Ingress protection | IP54 |
| Best suited to | QSZ13 / QSL9 sets in hospitals, hotels and offices |
| Typical power range | 10 – 4,000 kVA |
|---|---|
| Enclosure | None — open skid |
| Ingress protection | IP21 (control panel IP54 optional) |
| Best suited to | QSB7 sets for plant rooms and OEM skid integration |
Already running a Cummins set?
Common Cummins parts we hold or source weekly include fuel shut-off solenoids, QSK injector kits, water pumps, belt tensioners and the PowerCommand control boards.
Cummins sets, answered plainly
The three things buyers ask us most about this engine platform.
Both, stated clearly on the quotation. Service parts such as filters and belts are usually aftermarket from approved suppliers; sensors, injectors and control boards are genuine Cummins unless you ask otherwise.
Not on standard builds. The QSK60 is a distillate engine, so it runs on diesel or EN 590 equivalent. If you need HFO you should be looking at a Mitsubishi S16R or a dedicated heavy-fuel platform.
Typically 45 to 70 days from deposit, depending on whether the engine is in stock and whether the container needs a walk-in control room. QSK60 builds sit at the longer end.