C4.4 (50 Hz) | 50-110 kVA Diesel Generator

Diesel Generator Sets C4.4 (50 Hz)

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Key Specs

Maximum Rating
110 kVA
110 kVA
Minimum Rating
50 kVA
50 kVA
Emissions/Fuel Strategy
EU Stage II & R96/EUIIIa
EU Stage II & R96/EUIIIa


50 - 110 kVA Diesel Generator Set

Producing reliable power from 50 to 110 kVA at 50 Hz, our C4.4 diesel generator sets designed to ISO 8528-5 transient response requirements. All C4.4 to meet EPA Stationary Emergency (Tier 3) emissions standards.


Suitable for Harsh & Testing environments

Optimised for 5% Lower Fuel Consumption

Longer run times between fuel fills; reduced operating costs

Reliability tested for over 500 Hours

Ensures you can count on emergency power when it is needed

Product Specifications for C4.4 (50 Hz)

Maximum Rating 110 kVA 110 kVA
Minimum Rating 50 kVA 50 kVA
Emissions/Fuel Strategy EU Stage II & R96/EUIIIa EU Stage II & R96/EUIIIa
Voltage 110 to 480 Volts 110 to 480 Volts
Frequency 50 Hz 50 Hz
Speed 1500 rpm 1500 rpm
Duty Cycle Standby, Prime Standby, Prime
Engine Model Cat® C4.4 Cat® C4.4
Bore 4.1 in 105 mm
Stroke 5 in 127 mm
Displacement 268.5 in³ 4.4 l
Compression Ratio 16.2:1, 17.25:1, 18.2:1 or 18.3:1 16.2:1, 17.25:1, 18.2:1 or 18.3:1
Aspiration Turbocharged Turbocharged
Fuel System Direct Injection or Common Rail Direct Injection or Common Rail
Governor Type Mechanical Mechanical
Length - Maximum 75.8 in 1925 mm
Width - Maximum 44.1 in 1120 mm
Height - Maximum 53.6 in 1361 mm

C4.4 (50 Hz) Standard Equipment

Air Inlet System

  • Air cleaner; light duty with disposable element

Cooling System

  • Coolant drain line with valve
  • Caterpillar extended life coolant
  • Radiator and cooling fan with guards
  • Fan drive, battery charging alternator drive

Exhaust System

  • Stub pipe, gaskets, raincap and SAE exhaust flange for customer use - shipped loose

Fuel System

  • Standard open set fuel tank/base supplied base, formed steel with single wall integral 8-hour fuel tank

Control Panel

  • GCCP 1.3

Generators and Attachments

  • Voltage regulator (single phase sensing)
  • Tower panel, IP22, bottom cable entry
  • IP23 Protection
  • Circuit breaker, IEC, 3 pole, mounted in tower panel
  • 12 Leads
  • Segregated low voltage (AC/DC) wiring panel

Governing System

  • Mechanical and electrical governing system - model dependent

Mounting System

  • Captive linear vibration isolators between base and engine-generator
  • Includes lifting provision and drag points
  • Termination points for coolant and lube oil drain lines

Starting/Charging System

  • Batteries
  • 24V battery with rack and cables


  • Engine and alternator pre-paint, Caterpillar yellow

Lube System

  • Oil drain line with valve
  • Lubricating oil

C4.4 (50 Hz) Optional Equipment

Alternator System

  • 3 phase sensing
  • Anti-condensation heater
  • R Frame auxilliary winding
  • LC Frame alternator
  • Quadrature droop kit
  • Permanent magnet excitation (PMG)
  • LC Frame alternator with coastal insulation protection

Circuit breakers

  • Circuit breaker upgrades - 4 Pole circuit reaker to 250A, 400A and 630A

Cooling System

  • Coolant heater
  • Low coolant temperature alarm
  • Low coolant level shutdown

Control Panels

  • GCCP 1.3

Control Panel Options

  • Earth fault (2 wire only)


  • Sound attenuated Level 2 enclosure
  • Rental pack - CAE rental option only
  • Socket blanking plate - CAE rental option only
  • CEE form sockets - CAE rental option only
  • Sound attenuated Level 1 (galv)

European Certifications

  • Upgrade to STD set for CE

Fuel System Accessories

  • High fuel level alarm
  • Low fuel level shutdown
  • Skidbase for CALG enclosure sets
  • Bunded fuel tank
  • Low fuel level alarm
  • Open set narrow tankbase
  • Compact skidbase for open set

Global Certifications

  • Certification for CIS

Mounting Options

  • Silencer installation kit
  • Electronic governor
  • Residential siliencer
  • External single point lift - enclosure
  • Battery removal
  • Industrial silencer

Power Termination

  • Circuit breakers, UL listed

Special Packing/Inspectons for Shipment

  • PGS Test report @ 1.0 power factor
  • PGS Test report @ 0.8 power factor

General - Accessories / Miscellaneous

  • Stone guards/rad trans flange
  • Packing case - canopied set
  • Packing case - compact set

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Service Agreement (Cat® CVA & LTSA)

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Cat RAM and Condition Monitoring

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Maintenance and Repairs

Retain genset value with maintenance, upgrade kits, and repair options that extend lifecycles, optimise performance, and help you control costs.

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Media Gallery

C4.4 Open Set Rear Right

C4.4 Open Set Rear Left

C4.4 Open Set Front Right

C4.4 Open Set Front Left



C4.4 Open Set Rear Right
C4.4 Open Set Rear Left
C4.4 Open Set Front Right
C4.4 Open Set Front Left

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