June 13, 2024
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Mobile 28.5 VDC, 400 Amp, 208-600 VAC 50/60Hz

MSR-400-28 Ground Power Unit
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  • MSR-400-28 Ground Power Unit
  • weldedframgpu
  • Cable hanger
  • Wheel
  1. #MSR-400-28


  • Aircraft starting and servicing
  • Air conditioning and Electric Heat
  • Battery charging

Download Complete Specifications> MSR-400-28.pdf

Other Models Available:

  • MSR-400-28: 400 AMPS AT 28.5 VOLTS CONTINOUS, 1600 AMPS PEAK
  • MSR-650-28: 650 AMPS AT 28.5 VOLTS CONTINOUS, 2000 AMP PEAK
  • MSR-600-28-400HZ: 600 AMPS AT 28.5 VOLTS CONTINOUS, 2000 AMP PEAK. Input voltage 3 phase, 120/208 400Hz
  • MSR-650-28-PE: Pilot’s Edition Package, 650 AMPS AT 28.5 VOLTS CONTINUOUS, 2000 AMP PEAK. Pilot’s Edition Package includes special features: Rugged foot brake, Remote voltage sensing on a 20 foot aircraft cable.

Standard Features: 

  • 2 year warranty
  • Output Rating's 400 Amp
  • Input voltage from 208 to 575 VAC 3 Phase 50-60HZ, easily adjusted in the field
  • Output voltage adjustment range from 24 to 32 volts DC
  • Continuous Power rating: 400 amps at 28.5 VDC
  • Starting current rating: 0 to 1600 amps
  • 20 foot aircraft cable with AN225 oval plug
  • Smart Current Limit: Visual set and lock at desired current limit
  • Meets or exceeds MIL-STD-704 for Aircraft Power Quality Output
  • Voltage regulation 1%
  • DC output 1% ripple
  • Output current regulation 1%
  • Current limit control: True 0 to 100%
  • 115 Vac Convenience receptacle: 15 amp with weatherproof cover
  • AC line disconnects with industrial grade circuit breaker and through door actuator; equipped with lockout and tagout for safety
  • Input Power Monitoring: Input phase loss and under voltage detection
  • True overload ratings maintain aircraft voltage during starting
  • Hermetically sealed semiconductors with large aluminum heat sinks
  • Thermal protection for transformer and semiconductors
  • Four 8 inch (20.5 cm) non-marking wheels, two with foot brake
  • Heavy duty indoor / outdoor enclosure with baked powder coated finish IP54 enclosure
  • Quiet operation 50 dB @ continuous current rating, 58dB at peak current
  • Size 49.5”L x 30”W x 33.5”H with handlebars, Size 30”L x 30”W x 33.5”H without handlebars
  • Weight: 846 lbs
Download Complete Specifications> MSR-400-28.pdf


The MSR-400 is the little brother of the popular 600 amp mobile GPU.  This GPU has a true 400 amp continuous rating and up to 1600 amps of starting current.  This model also features an exclusive re-connectable input from 208 to 575 VAC which makes a single model useable around the world, on any 50 or 60 Hz power, and also features our “Push Button Current Set” which allows the user to precisely set the maximum current limit with the push of a button.  This will give the pilot and operator confidence that the unit will not allow too much current to be delivered to the aircraft during the starting cycle.

Built with a continuous welded enclosure and powder coated, this unit will look and perform flawlessly for many years to come.  The wheels are solid soft non marking, and comes standard with a 4/0 mil-spec 20 foot aircraft cable with a molded aircraft plug, with input an AC Circuit breaker for maximum safety.


This product is Subject To Restocking Fee

CURRENT POWER, LLC   •   1449 Jupiter Park Dr, STE #19   •   Jupiter, FL 33458, USA
Phone:   203-994-8408   •   Fax:   203-403-9543   •   sales@CurrentPowerLLc.com