Cummins QSM11 Series Diesel Generator Sets


Cummins Power Generation commercial generator sets are fully integrated power generation systems providing optimum performance, reliability and versatility for stationary standby and prime power applications.

  • Cummins® heavy-duty engine – Rugged 4-cycle, industrial diesel delivers reliable power, low emissions and fast response to load changes.
  • Alternator – Several alternator sizes offer selectable motor starting capability with low reactance 2/3 pitch windings, low waveform distortion with non-linear loads and fault clearing short-circuit capability.
  • Permanent magnet generator (PMG) – Offers enhanced motor starting and fault clearing short circuit capability.
  • Control system – The PowerCommand® electronic control is standard equipment and provides total genset system integration including automatic remote starting/stopping, precise frequency and voltage regulation, alarm and status message display, AmpSentry™ protection, output metering, auto-shutdown at fault detection and NFPA 110 Level 1 compliance.
  • Cooling system – Standard cooling package provides reliable running, at the rated power level, at up to 52 °C (126 °F) ambient temperature.
  • Enclosures – Optional weather protective and sound attenuated enclosures are available.
  • Fuel tanks – Dual wall sub-base fuel tanks are also available.
  • NFPA – The genset accepts full rated load in a single step in accordance with NFPA 110 for Level 1 systems.
  • Warranty and service – Backed by a comprehensive warranty and worldwide distributor network.

Explore list of Cummins Generators before you buy any other generator set.


Governor regulation class ISO 8528 Part 1 Class G3 Voltage regulation, no load to full load ± 0.5% Random voltage variation ± 0.5% Frequency regulation Isochronous Random frequency variation ± 0.5% Radio frequency emissions compliance IEC 801.2 through IEC 801.5; MIL-STD-461C, Part 9 Radiated Emissions (EMI).
Bore 125 mm (4.92 in) Stroke 147.1 mm (5.79 in) Displacement 10.8 L (661.0 in3 ) Configuration Cast iron, in-line 6 cylinder Battery capacity 550 amps minimum at ambient temperature of 0 °C (32 °F) and above Battery charging alternator 70 amps Starting voltage 24 volt, negative ground Fuel system Direct injection: number 2 diesel fuel, fuel filter (with water separator), automatic electric fuel shutoff Fuel filter Air cleaner type Lube oil filter type(s) Single spin-on, combination full flow and bypass filters Standard cooling system 52 °C (125 °F) ambient radiator.
Design Brushless, 4 pole, drip proof revolving field Stator 2/3 pitch Rotor Single bearing, flexible discs Insulation system Class H Standard temperature rise 125 °C standby, 105 ºC prime Exciter type PMG (Permanent magnet generator) Phase rotation A (U), B (V), C (W) Alternator cooling Direct drive centrifugal blower AC waveform total harmonic distortion < 5% no load to full linear load, < 3% for any single harmonic Telephone influence factor (TIF) < 50 per NEMA MG1-22.43 Telephone harmonic factor (THF) < 3.

Models available in Cummins QSM11 Series:

Generator Model Frequency Standby Rating (kW / kVA) Prime (kW / kVa) Spec Sheet
DQHAB 60 300 / 375 270 / 338 S-1586
C300D6R 60 300 / 375 270 / 337 S-1553
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