Diesel Generator Sets C4.4 (60 Hz) 36 - 100 ekW Diesel Generator Set

C4.4 (60 Hz)

Features At A Glance

Cat Generator Set Package
Cat Diesel Engine
R-Frame Alternator
EMCP Control Panel
Cooling System
One Safe Source
World Wide Product Support

Product Specifications for C4.4 (60 Hz)

Generator Set Specifications

Engine Specifications

Generator Set Dimensions

C4.4 (60 Hz) Standard Equipment

Air Inlet System

  • Air cleaner; light duty with disposable element

Air Inlet

  • Air Cleaner


  • Package mounted radiator

Cooling System

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

Control Panel

  • EMCP 4 Genset Controller
  • EMCP 4.1


  • Exhaust flange outlet

Exhaust System

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


  • Secondary fuel filter
  • Primary fuel filter with integral water separator
  • Fuel priming pump

Fuel System

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


  • Matched to the performance and output characteristics of Cat engines
  • IP23 Protection
  • Load adjustment module provides engine relief upon load impact and improves load acceptance and recovery time
  • Tower panel, IP22, bottom cable entry
  • Segregated low voltage (AC/DC) wiring panel
  • Voltage regulator (single phase sensing)
  • Circuit breaker, IEC, 3 pole, mounted in tower panel
  • 12 leads
  • IP23 protection

Governing System

  • Mechanical and electrical governing system - model dependent

Power Termination

  • Bus Bar

Lube System

  • Oil drain line with valve
  • Lubricating oil

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


  • Rubber vibration isolators

Starting/Charging System

  • 24V battery with rack and cables


  • Paint - Caterpillar Yellow except rails and radiators gloss black
  • Engine and alternator pre-paint, Caterpillar yellow


  • Batteries
  • 24 volt starting motor

C4.4 (60 Hz) Optional Equipment


  • Industrial, Residential, Critical Mufflers


  • Oversize and premium generators
  • Excitation: [ ] Permanent Magnet Excited (PM) [ ] Internally Excited (IE)
  • Anti-condensation heater

Alternator System

  • 3 phase sensing
  • Permanent magnet
  • Quadrature droop kit
  • LC frame alternator with coastal insulation protection
  • Anti-condensation heater
  • R frame auxilliary winding
  • LC frame alternator

Circuit Breakers

  • Circuit Breaker Upgrades - 4 Pole circuit reaker to 250A, 400A and 630 A

Power Termination

  • Circuit breakers, IEC compliant
  • Circuit breakers, UL listed

Control Panels

  • Remote monitoring software
  • Local & remote annunciator modules
  • EMCP (4.2) (4.3) (4.4)
  • Digital I/O module
  • Load share module

Cooling System

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

Control Panel Options

  • Earth fault (2 wire only)
  • Panel mounted audible alarm
  • Control panel heater
  • Overload shutdown via breaker
  • Earth leakage (2 wire only)
  • Emergency stop with key
  • Battery charger
  • Volt free contacts
  • Voltage adjust potentiometer
  • Speed adjust potentiometer
  • EMCP 4.2


  • Charging alternator
  • Oversize batteries
  • Jacket water heater
  • Battery chargers
  • Heavy-duty starting system


  • Sound attenuated Level 2 enclosure
  • Rental pack - CAE rental option only
  • Sound attenuated Level 1 (galv)

European Certifications

  • Upgrade to STD set for CE

Fuel System

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


  • CSA Certification
  • Sound attenuated, weather protective or high ambient weather protective enclosure
  • Single or dual wall sub-base fuel tanks
  • Single or dual wall integral fuel tanks
  • Narrow, Wide or Skid Base
  • EEC Declaration of Conformity
  • EU Certificate of Conformance (CE)
  • Automatic transfer switches (ATS)
  • Integral & sub-base fuel tanks
  • Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
  • UL 2200 package

Global Certifications

  • Certification for CIS

Mounting Options

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

Special Packing/Inspectons for Shipment

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

General - Accessories / Miscellaneous

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

See how C4.4 (60 Hz) compares against frequently compared products.

Tools And Expert Help At Every Turn

Cat Connect: Get More from Every Asset

Now there's an easier way to track and manage your equipment anytime, anywhere.

Learn More


Calculate what generator size you need by using our commercial and industrial generator sizing calculator, SpecSizer.

Learn More

Custom Power Solutions

There are no standard power solutions. Cat experts work with you to design a system to meet your individual power needs.

Learn More

Customer Value Agreements

Every piece of Cat equipment is designed and built to provide maximum productivity and operating economy throughout its working life. Your Cat dealer can help you maintain that built-in value through a Customer Value Agreement (CVA).

Learn More

Extended Service Coverage

Spend less time managing your equipment and more time running your business with options to protect you against unexpected repair costs.

Learn More

Gensets Sustain Restaurant After Hurricane

El Manjar Criollo Restaurant in Puerto Rico was able to stay open following Hurricane Maria, thanks to the help of C4.4 gensets provided by local dealer Rimco Cat.

Learn More

Hire Similar Size

View our full lineup of construction equipment rental products featuring a wide range of portable generator rental options as well as mobile generator sets for hire.

Learn More

Technical Resources

Explore valuable resources for generator sizing, specification, and training materials.

Learn More

Product Brochures and More Are Ready to Download!

Full specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.

Check out current offers for the C4.4 (60 Hz)

View More Offers