The ITW GSE 4400 is a mobile diesel ground power unit designed to provide reliable external electrical power for aircraft at airport gates, remote stands and FBO facilities. Available in 60 and 90 kVA configurations, the unit combines fuel-efficient operation, low noise and dependable power quality in a compact towable platform.

Powered by a Cummins diesel engine and an ITW GSE-designed generator, the 4400 is suitable for narrow-body aircraft, turboprops and other aircraft requiring an independent 400 Hz power source. An optional 28 VDC active rectifier allows simultaneous AC and DC operation.

General:
• Available in 60 kVA / 48 kW and 90 kVA / 72 kW configurations
• Three-phase, four-wire, 115/200 V, 400 Hz output
• Cummins QSB 4.5 turbocharged diesel engine
• Available with Tier 3 or Tier 4 Final emission configurations
• Operating temperature range from -25°F to 125°F / -32°C to 52°C
• No altitude derating required up to 10,000 ft for Tier 3 units
• No altitude derating required up to 12,000 ft for Tier 4 units
• 53 US gal / 200 L fuel tank
• At least eight hours of operation at maximum full load
• Low-profile towable trailer with fifth-wheel steering
• Towbar-operated parking brake
• Forklift pockets for handling and transport

Power and Protection:
• ITW GSE-designed and manufactured synchronous generator
• Line-drop compensation maintains correct voltage at the aircraft connection
• Meets MIL-STD-704F, SAE ARP 5015 and ISO 6858 power-quality requirements
• Protection against overvoltage, undervoltage, frequency variation and overload
• Automatic shutdown for low oil pressure or high coolant temperature
• Low coolant level and low fuel warnings
• No-load automatic shutdown
• Electronic engine governor
• 24 VDC battery system
• Intake-manifold preheater for cold-weather starting

Operator and Maintenance Features:
• Icon-based multilingual operator interface
• Displays engine, output-power and fault information
• Memory recall and setup functions
• Sliding canopy provides easy access to major components
• Canopy can be removed manually without lifting equipment
• Corrosion-resistant polyethylene canopy and cable trays
• Double-skin canopy helps reduce operating noise
• Rounded exterior edges help protect operators, aircraft and ramp equipment
• Software-based controls can be updated using a USB drive
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Optional 28 VDC System:
• 28.5 VDC active rectifier available
• Simultaneous operation with the 400 Hz output
• Continuous output of up to 600 A
• Peak output of up to 2,000 A
• Adjustable output voltage and current limits
• Second 400 Hz output available
• Optional operating beacon, low-fuel beacon and clearance lights
• Optional block heater, battery blanket and towing interlocks