Tronair 112850S0100 50 HZ 28V DC Aircraft GPU - Single Output

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The Tronair 112850S0100 / 112850S0200 / 112850S0000 provide 28 Volt DC ground power to aircraft while in the hangar or on the ramp. These units are setup with single output cable or dual output cable. These models also only operate on 50 HZ input voltage.

If you need a 60 HZ input voltage unit, please search for 112860S0100 or contact us for the 60 HZ unit.

Options Available

Please request any options at time of quote.
  • Both single and dual output versions available
  • Available with either a 100', 50', or no input cable depending on your specific needs

Standard Features

  • 2 year Tronair Platinum warranty
  • Under 52dB during normal operation, 60dB maximum
  • Clean power, low voltage ripple <.2 VDC RMS
  • 15 A, 115 VAC, duplex GFIC weatherproof receptacle with cover on 50 Hz Models
  • MIL-STD-704F and 18" NEC compliant
  • Energy saving thermal control cooling fan
  • Low profile fits under most wings
  • Sturdy all weather IP54 enclosure with cord hangers
  • Long life LED indicator lights that double as diagnostic tool
  • Main disconnect switch
  • DC On/Off switch
  • Emergency stop switch
  • Large 9 in (23 cm) rubber ridgid and lockable swivel casters for easy maneuverability
  • Adjustable current limit output
  • Simple to use
  • Easy to change multi-volt transformer
  • Finish: Durable Powder Coat Tronair Blue
  • CE marked

Cable Length

  • 20 ft (6.1 m) output cable with AN2551 aircraft DC connector on Single Models
  • 50 ft (12.2 m) input cable [100 ft (30.5 m) input cable optional] electric plug not included on input cable
  • Input Voltage

    • Input - Voltage Range 200-480V +/- 10%+/- 10%
    • Input - Power 25 KVA
    • Input - Phase 3
    • Input - Frequency 50 Hz


    • Voltage 28.5 VDC
    • Current Limit (Adjustable) 100-2000 max amps DC
    • Continuous Power 600 amps at 28.5 VDC
    • Starting Power 2000 amps


    • Output over/under voltage
    • Output over current
    • Input phase loss detection, missing phase
    • Input over/under voltage
    • Input Circuit Breaker 100 amps
    • Transformer over temperature
    • SCR over temperature

    Thermal Protection

    • Cooling fan temperature controlled variable speed
    Alternate Models
    112850D000050Hz, 28.5V Dual Output, No Cable (CE)
    112850D010050Hz, 28.5V Dual Output, 50' Cable (CE)
    112850D020050Hz, 28.5V Dual Output, 100' Cable (CE)
    112850S000050Hz, 28.5V Single Output, No Cable (CE)
    112850S020050Hz, 28.5V Single Output, 100' Cable (CE)
    General Information
    Part #112850S0100
    Details2 Year Limited Tronair Platinum Warranty
    Shipping Information
    Freight NMFC62900
    Schedule B8504404000
    Height33 (84) in (cm)
    Input50 Hz
    Input Cable50 (15.2) ft (cm)
    Length42 (107) in (cm)
    Output CableSingle
    Voltage200-415 volts
    Weight702 (318) lb (kg)
    Width31 (79) in (cm)
    Copyright © 2022 Pilot John International, a Carolina GSE Inc. Company