C3.3 Generator Set

4 in
201 in³
5 in
  • Exterior View
  • Exterior View

Engine Specifications

4 in
201 in³
5 in
Fuel System
Direct Injection
Engine Model
Cat® C3.3
Compression Ratio
17.25:1, 19.25:1
Governor Type
Fuel System
Direct Injection
4 in
201 in³
5 in
Fuel System
5 in

Generator Set Specifications

Minimum Rating
27.0 ekW
Maximum Rating
60.0 ekW
110 to 480 Volts
60 Hz
1800 rpm
Emissions/Fuel Strategy
EU Stage II & R96/EUIIIa
Duty Cycle
Standby, Prime

Generator Set Dimensions

Height - Maximum
54 in
Length - Maximum
44 in
Width - Maximum
38 in

Cat Generator Set Package

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meets NFPA 110 loading requirements
  • Conform to ISO 8528-5 steady state and transient response requirements

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

R-Frame Alternator

  • Superior motor starting capability minimizes need for oversizing alternator
  • Designed to match performance and output characteristics of Cat diesel engines
  • Robust Class H insulation

GCCP 1.3 Control Panel

  • User-friendly interface and navigation
  • Scalable system to meet a wide range of installation requirement
  • Expansion modules and site-specific programming for specific customer requirements
  • Image may not be a representative of actual product

Cooling System

  • Designed to operate in standard ambient temperatures up to 55°C (131°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities


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

One Safe Source

  • Components used in the generator set are selected based on seamless design integration to provide the optimum performance
  • The generator set is fully assembled at a Caterpillar facility following our quality guidelines
  • Each generator set package is tested before leaving the Caterpillar facility
  • Cat product support, including dealer service, parts and warranty covers the entire Cat power system

World Wide Product Support

  • Cat dealers have over 1,800 dealer branch stores operating in 200 countries
  • Your local Cat dealer provides extensive post-sale support, including maintenance and repair agreements
  • Air Inlet System
    • Air cleaner; light duty with disposable element
  • Control Panel
    • GCCP 1.3
  • 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 & 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
    • Circuit breaker, IEC, 3 pole, mounted in tower panel
    • IP23 Protection
    • Tower panel, IP22, bottom cable entry
    • 12 Leads
    • Voltage regulator (single phase sensing)
    • Segregated low voltage (AC/DC) wiring panel
  • Governing System
    • Mechancial governing system - model dependant
    • Mechanical and electrical governing system - model dependant
  • Lube System
    • Lubricating oil
    • Oil drain line with valve
  • Mounting System
    • includes lifting provisions and termination points for coolant
    • Includes lifting provision and drag points
    • Termination points for coolant and lube oil drain lines
    • Captive linear vibration isolators between base and engine-generator
  • Starting / Charging System
    • 12V Battery with rack & cables
  • General
    • Engine and alternator pre-paint, Caterpillar Yellow
  • Alternator System
    • LC frame alternator
    • Anti-condensation heater
    • Permanent magnet
    • LC frame alternator with coastal protection
    • R frame auxilliary winding
  • Alternator
    • Alternator removal options
  • Circuit Breakers
    • 4 Pole circuit breaker to 250A
    • Pad-lockable breaker device
  • Control Panels
    • GCCP 1.3
  • Control Panel Options
    • Overload shutdown via breaker
    • Volt free contacts
    • Earth leakage (2 wire only)
    • Speed adjust potentiometer
    • Voltage adjust potentiometer
    • Battery charger
    • Control panel heater
    • Earth fault (2 wire only)
    • Panel mounted audible alarm
    • Emergency stop with key
  • Cooling System
    • Coolant heater
    • low coolant level shutdown
    • Low coolant temperature alarm
  • Certifications
    • European Upgrade to STD set for "CE"
    • Global certification for CIS
  • Enclosures
    • CEE for sockets for enclosure
    • Socket blanking plate
    • Sound attenuated level 1 enclosure (GALV)
    • Sound attenuated level 2 enclosure CE
    • Rental pack (CAE only)
  • Fuel System
    • Skidbase for CALG enclosure sets
    • Low fuel level shutdown
    • High fuel level alarm
    • Compact skidbase for open sets
    • Low fuel level alarm
    • Bunded fuel tank
    • Open set narrow tankbase
  • Mounting Options
    • Silencer installation kit
    • Battery removal
    • Electronic governor
    • Residential silencer
    • External single point lift - enclosure
  • Special Packing Inspections
    • PGS test report @ 0.8 power factor
    • PGS test report @ 1.0 power factor
  • General
    • Stone guards / rad trans flange
    • Packing case, compact set
    • Packing case, canopied set