Mobile Diesel Generator | 20kW | 25 kVA Prime Output

20kW Prime Output | Mobile Diesel Generator

Quiet, easy power in a compact package - the MDG25IF4 Diesel Generator

The MDG25IF4 mobile diesel generator from Generac Mobile provides three-phase 25kVA prime power in a compact cabinet. The new cabinet design enables maximum space and transport efficiency while making the generator easy to maneuver and tow. The Final Tier 4 Isuzu engine is reliable and easy to maintain, requiring no diesel particulate filter (DPF). Standard safety features enhance safety and security on the job.


  • Compact size saves space on the job site
  • Small cabinet allows for 12 units on a flatbed truck
  • Integrated fork pockets and central lifting allow for easy of loading and unloading
  • Lightweight – can be towed by most work trucks and SUVs
  • Heavy gauge steel trailer EPA Tier IV Turbocharged, after-cooled diesel engine
  • All steel, rugged, square body design


  • External E-Stop is easy to locate and access in emergency situations
  • Interior cabinet and control panel lighting for enhanced visibility
  • Phase switch safety shutdown
  • Access doors with auto shutdown separates main breaker access from load cables; automatically shuts down unit if lug door is opened
  • Controller located on rear of unit away from power wires and service points and lockable for security and safety
  • Fuel access is lockable and located away from power distribution
  • LED Trailer lights

Easy to Use

  • Large access doors allow for unobstructed access to service components and includes slam latches
  • Maximized service access with removable French style doors
  • No diesel particulate filter (DPF)
  • Load mitigation device available as option
  • Long, 28-hour run time, 56 gallon tank requires less fill-ups for more uptime
  • 13 warning and shutdown features


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File Type Manual (PDF) Item Number Download


kW/kVA Prime (kW): 20

Engine: Isuzu® 4LE2T

Run Time @ 75% (hr): 35

Power (kW):