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MQ Whisperwatt DCA300SSJ Generator (264kW)

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11,220.00 LBS

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The MQ Power Whisperwatt DCA300SSJU4F2 mobile diesel generator offers up to 264 kW of power at 72 dBA.


  • Designed and built to withstand tough environments at construction sites and provide dependable temporary power at entertainment venues and disaster recovery operations.
  • Voltage change-over bus bars offers the operator a wide range of three phase 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.
  • ECU845 microprocessor-based digital generator controller with remote 2-wire start/stop control, operational temperature range of -40° to 85° C, high visibility LCD display with heated screen and alphanumeric readout, Modbus interface for gauge panel and expansion options, AC monitoring along with fuel and DEF level indicators.
  • Analog generator instrumentation including AC ammeter, AC voltmeter, frequency meter, ammeter phase selector switch, voltmeter phase selector switch, and voltage regulator adjustment potentiometer.
  • Digital engine gauges including oil pressure, water temperature, battery volts, engine speed, engine load, fuel level and DEF fluid level.
  • Automatic safety shutdown system monitors the water temperature, engine oil pressure, low coolant, low DEF, overspeed, and overcrank; warning lights indicate abnormal conditions.
  • Emergency stop switch — when manually activated, shuts down generator in the event of an emergency.
  • Main line circuit breaker with 800A rating.
  • Fully covered power panel with three-phase terminals and single phase receptacles for 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 F 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 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, electronic direct injection, turbocharged, charge air cooled, EGR, DOC, SCR, EPA Tier 4 Final certified, John Deere diesel engine with 1000W block heater.
  • Fuel/water separator removes condensation from fuel for extended engine life; panel mounted alarm light included.
  • UN31A internal fuel tank with direct reading fuel gauges are standard.
  • Spill Containment — Bunded design protects environment by capturing up to 123% 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.


DCA300SSJU4F2 Spec Sheet


  • TRLR300EVH/E

OPTIONS (Order with Generator)

  • Audible Alarm.
  • 10A Battery Charger.
  • Battety Disconnect Switch.
  • Camlock Connections (Double Set).
  • External Fuel Three-Way Manual Fuel Valve
  • Fire Extinguisher - 20 lbs. with bracket
  • Parallel Controls.
Standby Power:
264 kW / 330 kVA
Prime Power:
240 kW / 300 kVA
Amperage - 3 Phase:
722A @ 240V, 361A @ 480V
Voltage Change-Over at 139/240V:
120/208, 127/220, 139/240
Voltage Change-Over at 277/480V:
240/416, 254/440, 277/480
Voltage Regulation:
Frequency / Regulation:
60Hz / 0.25%
Power Factor:
Armature Connection:
Star with neutral
4-pole, Revolving field, Self-ventilated, Drip-proof, Single bearing, Brushless with AVR, 1800 rpm, Class F
Receptacles (Single Phase):
2 - 20A 120V GFCI Duplex (5-20), 3 - 50A 139/240V Twistlock (CS6369)
Sound Level:
72 dBA
John Deere 6090HFG06, 6-cylinder, 4-cycle, Water-cooled, Direct Injection, Turbocharged, Charged Air Cooled, EGR, DOC, SCR
Engine Starting System:
1 - 12V 430Ah
Fuel / Tank Capacity:
Diesel / 430 gallons
Fuel Consumption:
16.7 gph @ full load, 8.9 gph @ half load
EPA Tier 4 Final
Dimensions LxWxH (inches):
150 x 60 x 97
Approximate Dry Weight:
11,220 lb.
Engine Warranty:
12 months / Unlimited hours -OR- 24 months / 2000 hours (whichever occurs first)
Generator Warranty:
24 months / 2000 hours (whichever occurs first)
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