qsg12 generator set

QSG12 360 - 500 kVA / 288 - 420 kW Generator Sets

Frequency (Hz) 50, 60
Certification CE, EU Grid Code, EAC, AS/NZS 3000, ROHS, SONCAP
Rated for kW kVA
Standby 320-400 400-500
Prime 288-365 360-456


Healthcare Mining Generators Commercial Industrial Telecom



This Cummins® Power Generation commercial generator set is a fully integrated power generation system, providing optimum performance, reliability, and versatility for stationary standby and prime power applications.

With an improved design and an advanced combustion system, the QSG12 50 and 60Hz generator sets offers more power for less space, by delivering a much higher power density and a more reliable power solution. The series is available from 400-450kVA at 50Hz and from 350-400kW at 60Hz.
These models are powered by a Cummins four cycle, inline, 6-cylinder dual speed diesel engine offering more robust performance using less fuel. The new product series is designed for a wide variety of applications to meet diverse customer needs in different markets such as hospitals, manufacturing, commercial and industrial facilities.

Generator Model Engine Model Hz Prime kVA / kW Standby kVA / kW Alternator Genset Controller Spec Sheet
C400D5 QSG12G1 50 360 / 288 400 / 320 S4L1D-F41 PC2.2 S-6337-EN
C450D5 QSG12G2 50 410 / 328 450 / 360 S4L1D-G41 PC2.2 S-6337-EN
C350D6 QSG12G3 60 400 / 320 438 / 350 S4L1D-F41 PC2.2 S-6337-EN
C400D6 QSG12G4 60 456 / 365 500 / 400 S4L1D-G41 PC2.2 S-6337-EN

Cummins QSG11.8L Engine

  • Turbocharged & after cooler with electric governor for optimized performance and reliability
  • Best in class fuel consumption

New S Series alternator

  • New core cooling technology results in improved thermal performance and increased power density

Air Cleaner

  • Normal duty air cleaner, optional heavy-duty AC
  • Standard pre-filter and fuel/water separator 

Controls System – PowerCommand®

  • Pedestal design, dual door with improved reliability and serviceability
  • Separate fuse box design for maintenance convenience
  • PC2.2 new generation controller
  • Optional paralleling controller
  • Auto remote start/shutdown, alarm and running status

Higher power density in a smaller footprint

  • Reduces genset room size requirement
  • Lowers transportation cost

Factory Fit Enclosures 

  • Provide weather protection & sound attenuation
  • Ambient capability up to 50 Deg C
  • 765 L Fuel tank with spillage catchment is available on all genset models
  • Wide and long fuel fill neck on the fuel tank provides easy access and fill by the operator 
  • 2 point lifting and optional 4 point chassis lifting arrangement available

Extended Service Interval of 500 hours

  • Reduces the labor and material cost for maintenance
  • Greater fuel efficiency
  • Increased engine protection



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Local Service.  Global Expertise.

Next generation power deserves next-level support. Cummins global service and support network ranges
over 8,000 dealer locations, 500 distributor facilities and 190+ countries to ensure that you’re covered no
matter where your business takes you. 

On top of global reach and expertise, we also have local account managers and expert application specialists to offer support when you need it most. Plus, all Cummins service and support resources are managed through a single point of contact: your factory-direct account manager who’s assigned specifically to you.


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