C18 Generator Set

C18 Generator Set

C18 T4 Open Set

Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.

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Generator Set Specifications

Maximum Rating
500 ekW
Minimum Rating
455 ekW
Emissions/Fuel Strategy
U.S. EPA Tier 4 Final
480 Volts
60 Hz
1800 rpm
Duty Cycle
Standby, Prime

Engine Specifications

Engine Model
C18 ATAAC, I-6, 4-Stroke Water-Cooled Diesel
Compression Ratio
Air to Air Aftercooled
Fuel System
Electronic unit injection
Governor Type

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

A-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 1.2 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

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


  • UL2200 Listed; CSA 22.2; Certification of Compliance – IBC Seismic; Dual IBC & HCAI

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

Cat Clean Emissions Module (CEM)

  • The Tier 4 Final engine has been optimized to work with the Cat CEM.
  • The CEM is a reliable, compact, and lightweight system that gives maximum installation flexibility.
  • It features a diesel oxidation catalyst for particulate matter (PM) and hydrocarbon (HC) control.
  • Selective catalytic reduction (SCR) reduces NOx output and provides integrated sound attenuation.
  • The CEM is controlled by a separate dosing module that has been integrated into the standard generator set controls for complete monitoring, protection and closed loop NOx control.
  • For more information on the CEM, refer to cut sheet LEHE0359.

UL 2200 / CSA - Optional

  • UL 2200 listed packages
  • CSA Certified
  • Certain restrictions may apply.
  • Consult with your Cat® Dealer.

Standard Equipment:

Optional Equipment:

    Control System
    • Ground fault relay
    • Dust proof control panel
    • Breaker box mounting location
    • Volt free contact
    • Device server
    • Separation plate
    • Remote annunciators
    • GCCP 1.5
    • Local annunciator
    • Remote E-stop button
    • Optional external analog input
    • Control panel mounting
    • Industrial, residential, critical mufflers
    • Anti-condensation heater
    • Excitation: [ ] Permanent magnet excitation (PMG) Excited (PM) [ ] Internally Excited (IE)
    • Oversize and premium generators
    Power Termination
    • Circuit breakers, UL listed
    Generators And Attachments
    • AREP generator
    • CIP generators
    • Space heater
    • Generator mounting and duct plate
    Air Inlet System
    • Single element air filter
    • Dual element air cleaner
    • Certificate of Compliance
    • IBC Certification wind load
    Circuit Breakers
    • Motorized single circuit breaker
    • Neutral bars
    • Power cables
    • Dual breakers first circuit breaker (CB2) LS/I package mounted
    • Current transformers
    • Package mounted single circuit breakers
    • Dual breakers first circuit breaker (CB1) LS/I package mounted
    • Auxiliary contacts
    Cooling System
    • Aftertreatment guard
    • Standard radiator
    • Sound attenuated enclosures
    Exhaust System
    • Flange kits
    • Exhaust flexible fittings
    Fuel System
    • 660 gallon base tank
    Generator Attachments
    • Permanent magnet excitation (PMG) generator
    Mounting System
    • Standard base wide
    • 5 Gallon spill containment
    • Optional CB shroud
    • Overfill prevention valve
    • Locking fuel fill
    Starting / Charging System
    • Battery disconnect switch
    • Jacket water heater
    • Shore power control group
    • 10 Amp dual Battery charger
    • PGS Test report @ 0.8 power factor
    • 4 Hour factory test (un-witnessed)
    • PGS Test report @ 1.0 power factor
    • Generator test report