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MQ Whisperwatt DCA40SSK Generator (31kW)

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2,205.00 LBS

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The MQ Power Whisperwatt DCA40SSKU4F2 mobile diesel generator offers up to 30.2 kW of single/three phase power at a quiet 63 dBA.


  • Designed and built to withstand tough environments at construction sites and provide dependable temporary power at entertainment venues and disaster recovery operations.
  • Voltage selector switch offers the operator a wide range of voltages that are manually selectable. Fine tuning of the output voltage can be accomplished by adjusting the voltage regulator control knob to obtain the desired voltage.
  • Automatic start/stop control — automatically starts the generator set during a commercial power failure when used in conjunction with a transfer switch.
  • Complete engine analog instrumentation includes fuel level gauge, hour meter, preheat indicator, and emergency shutdown monitors.
  • Complete generator analog instrumentation includes voltage regulator control, ammeter phase selector switch, AC voltmeter, AC ammeter, frequency meter, and circuit breaker.
  • Automatic safety shutdown system monitors the water temperature, engine oil pressure, overspeed, and overcrank; warning lights indicate abnormal conditions.
  • Main line circuit breaker with 110A rating.
  • Complete power panel. Fully covered; three-phase terminals and single phase receptacles allow fast and convenient hookup for most applications including temporary power boxes, tools and lighting equipment.
  • Brushless alternator reduces service and maintenance requirements and meets temperature rise standards for Class H insulation systems.
  • Open delta alternator design provides virtually unlimited excitation for maximum motor starting capability.
  • Automatic voltage regulator (AVR) provides precise regulation.
  • Electronic Governor Control — isochronous control, maintains frequency to within ±0.25% from no load to full load.
  • Full load acceptance of standby nameplate rating in one step (NFPA 110, para 5-13.2.6).
  • Heavy-duty, 4-cycle, direct injection, turbocharged, EGR, ECM, DOC, EPA Tier 4 Final certified, Kubota diesel engine.
  • Fuel/water separator removes condensation from fuel for extended engine life. Panel mounted alarm light included.
  • Internal fuel tank with direct reading of fuel gauge.
  • Spill containment — Bunded design protects environment by capturing up to 132% of engine fluids.
  • Sound-attenuated, weather-resistant, steel housing.
  • E-coat and powder coat paint provides durability and weather protection.
  • Fully lockable enclosure allows safe unattended operation.


DCA40SSKU4F2 Spec Sheet


  • TRLR45
  • TRLR75XF2 (with 100 gallon fuel cell; requires a mounting kit)

OPTIONS (Order with Generator)

  • Audible Alarm
  • 3A Battery Charger
  • Battery Disconnect Switch
  • Camlock Connections (Single Set)
  • Cold Weather Block Heater
  • Crankcase Vent Heater
  • Emergency Stop Button
  • External Fuel Three-Way Manual Fuel Valve
  • External Fuel Three-Way Automatic Fuel Valve
  • Fire Extinguisher - 5 lbs. with bracket
  • Low Coolant Shutdown
Standby Power:
30.2 kW / 37.8 kVA at 3PH, 27.3 kW at 1PH
Prime Power:
28.8 kW / 36 kVA at 3PH, 26 kW at 1PH
Amperage - 3 Phase:
86A @ 240V, 43A @ 480V
Amperage - 1 Phase:
80A (4 wire) / 108A x 2 (zigzag) @ 120V, 40A (4 wire) / 108A (zigzag) @ 240V
Voltage - 3 Phase:
208, 220, 240, 416, 440, 480V Switchable
Voltage - 1 Phase:
120, 127, 139, 240, 254, 277V Switchable
Voltage Regulation:
Frequency Regulation:
Power Factor:
0.8 (3PH), 1.0 (1PH)
Armature Connection:
Star with neutral / Zigzag
4-pole, Revolving field, Self-ventilated, Drip-proof, Single bearing, Brushless with AVR, 1800 rpm
Receptacles (Single Phase):
2 - 20A 120V GFCI Duplex (5-20), 2 - 50A 240V Twistlock (CS6369)
Sound Level:
63 dBA
Kubota V2403-CR-TIE4BG, 4-cylinder, 4-cycle, Water-cooled, Direct injection, Turbocharged, EGR, ECM, DOC
Engine Starting System:
1 - 12V 72Ah
Fuel / Tank Capacity:
Diesel / 67.4 gallons
Fuel Consumption:
2.3 gph @ full load, 1.3 gph @ half load
EPA Tier 4 Final
Dimensions LxWxH (inches):
77 x 38 x 54
Approximate Dry Weight:
2205 lb.
Engine Warranty:
12 months / unlimited hours (or) 24 months / 2000 hours
Generator Warranty:
24 months / 2000 hours
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