Generac MMG320 Mobile Generator from Portman Electric
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Mobile Generator - MMG320

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Mobile Generator - MMG320

Generac recognizes environmental responsibility and continues to meet emission regulations with the addition of their Tier III Generator line. The MMG320 generator is powered by the John Deere 6090HF turbocharged diesel engine. Proven power you can trust, while maximizing fuel efficiency and high performance.

The MMG320 diesel generator provides substantial, reliable 3-phase power where and when you need it, in a highly mobile package.



  • White industrial powder coat finish on a sound attenuated aluminum enclosure
  • Baffles and insulation bring this unit in at 68 dBA at prime power
  • Black texture steel skid frame and trailer at industrial strength on tandem axles with electric brakes
  • All stainless steel exterior hardware, door handles & latches
  • 2 rear stabilizer jacks


  • Advanced monitoring backlit Magnum Digital Controller (MDC)
  • Voltage regulation is within +/- 1%
  • Generator speed is controlled by an electronic governor and is switchable
  • Minimum 24 hour fuel consumption at prime
  • Radiator and oil drains on flexible hose extensions
  • Air cleaner restriction indicator
  • 2 year - 2,000 hour warranty
  • In line block heater
  • Lockable battery disconnect
  • Buck transformer
  • Battery charger - 2 amp trickle
  • Low coolant shutdown

Easy to Use

  • Two position, voltage link board
  • Electronic governor
  • Lug box safety switch, main breaker trips when door is opened
  • Cable box guard
  • Multiple convenience receptacles with individual breakers
  • External red metal emergency safety stop switch
  • External, lockable fuel cap (no internal fuel spills)
  • Remote start capability (stop/start contacts located on terminal strip)
  • Detachable generator-set from trailer use skid mounted or trailer mounted
  • Fuel tank designed integrated into generator-set

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