C3.3 Generator Set

  • Overview
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Cat™ Diesel Engine

  • Reliable, rugged, durable design
  • Field-proven in thousands of applications worldwide
  • Four-stroke-cycle diesel engine combines consistent performance and excellent fuel economy with minimum weight
  • Generator

  • Matched to the performance and output characteristics of Cat engines
  • Industry leading mechanical and electrical design
  • Industry leading motor starting capabilities
  • IP 23 Protection
  • Cat EMCP Control Panel

    The EMCP controller features the reliability and durability you have come to expect from your Cat equipment. The EMCP 4 is a scalable control platform designed to ensure reliable generator set operation, providing extensive information about power output and engine operation. EMCP 4 systems can be further customized to meet your needs through programming and expansion modules. The EMCP4.1 is fitted as standard.

    Design Criteria

  • The generator set is designed to meet ISO8528-5 transient response and NFPA 110.
  • Cooling system designed to operate in 50˚C / 122˚F ambient temperatures with an air flow restriction of 0.5 in. water.
  • CE Certification

    CE Certification available

    World Wide Product Support

    Cat dealers provide extensive post-sale support including maintenance and repair agreements. Cat dealers have over 1,800 dealer branch stores operating in 200 countries. The Caterpillar S•O•S℠ program cost effectively detects internal engine component condition, even the presence of unwanted fluids and combustion by-products


  • Single wall 8 hour wide fuel tank
  • Circuit breaker, IEC, 3 pole
  • Industrial Silencer (10dBA)
  • Generator Set Specifications
    Minimum Rating 27.0 ekW (33.8 kVA)
    Maximum Rating 60.0 ekW (75 kVA)
    Voltage 110 to 480 Volts
    Frequency 60 Hz
    Speed 1800 RPM
    Generator Set Configurations
    Emissions/Fuel Strategy Non Regulated, EU Stage II and EU Stage IIIA
    Engine Specifications
    Engine Model Cat® C3.3
    Bore 105 mm (4.1 in)
    Displacement 3.3 L (201.4 inu00b3)
    Stroke 127 mm (5 in)
    Compression Ratio 17.25:1, 19.25:1
    Governor Type Mechanical
    Fuel System Direct Injection

    Standard Equipment

    • Air Inlet System
      • Air cleaner; light duty with disposable element
    • Control Panel
      • EMCP4.1 control panel
    • Cooling System
      • Radiator and cooling fan with guards
      • Coolant drain line with valve
      • Fan drive, battery charging alternator drive
      • Caterpillar extended life coolant
    • Exhaust System
      • Stub pipe, gaskets, raincap & 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
    • Generators and Generator Attachments
      • 12 leads
      • IP23 Protection
      • Voltage regulator (single phase sensing)
      • Tower panel, IP22, bottom cable entry
      • Circuit breaker, IEC, 3 pole, mounted in tower panel
      • Segregated low voltage (AC/DC) wiring panel
    • Governing System
      • Mechancial governing system – model dependant
    • Lube System
      • Lubricating oil
      • Oil drain line with valve
    • Mounting System
      • includes lifting provisions and termination points for coolant
      • Captive linear vibration isolators between base and engine-generator
      • Termination points for coolant and lube oil drain lines
    • Starting / Charging System
      • 12V battery with rack and cables
    • General
      • Engine and alternator pre-paint, Caterpillar Yellow

    Optional Equipment

    • Alternator
      • Alternator removal options
      • R frame auxilliary winding – SE AUx Alt 01, 02 and 03
      • LC frame alternator
      • LC frame alternator with coastal protection
      • Permanent magnet
      • Anti-condensation heater
    • Circuit Breakers
      • 4 Pole circuit breaker
    • Control Panel Options
      • Volt free contacts for common alarm
      • Volt free contacts for genset running
      • Speed adjust potentiometer – requires electronic govenor
      • Voltage adjust potentiometer
      • Panel mounted audible alarm
      • Earth fault (2 wire only)
      • Earth leakage (2 wire only)
      • Overload shutdown via breaker
      • Battery charger
      • Emergency stop with key
      • Control panel heater
    • Cooling System
      • Coolant heater
      • Low coolant temperature alarm
      • low coolant level shutdown
    • Global Certifications
      • Certification for CIS
    • Enclosures
      • Sound attenuated level 2 enclosure CE
      • Sound attenuated level 1 enclosure (GALV)
    • European Certifications
      • Upgrade to STD set for “CE”
    • Fuel System
      • Open set narrow tankbase
      • Compact skidbase for open sets
      • Skidbase for CALG enclosure sets
      • DEFRA bunded fuel tank
      • Low fuel level shutdown
      • Low fuel level alarm
      • High fuel level alarm
    • Mounting Options
      • Electronic governor
      • Battery removal
      • Industrial silencer removal
      • Residential Silencer
      • Silencer installation kit
    • Rental Options
      • External single point lift – enclosure
      • Rental pack (CAE only)
      • CEE form sockets for enclosure
      • Socket blanking plate
    • General
      • Stone guards / rad trans flange
      • Packing case, compact set
      • Packing case compact set, canopied

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