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Minimum Rating

36.0R ekW (45 kVA)

Maximum Rating

99.0 ekW (123 kVA)

Frequency

50 Hz or 60 Hz

Cat® C4.4 Marine Generator Set

ABOUT THE cat C4

Cat® C4.4 Diesel Marine Generator Set has three phase ratings of 50 Hertz at 38.0, 51.5, and 69.0 ekW with heat exchanger cooling and at 36.0, 49.0, and 65.0 ekW with radiator cooling that meet EU CCNR2 emissions standards. The C4.4 also has three phase ratings of 60 Hertz at 44.0, 58.5, 76.0, and 99.0 ekW with heat exchanger cooling and of 42.0, 56.0, 72.0, and 95.0 ekW with radiator cooling. C4.4 gen set is available in 12 or 24 volt as an open gen set or as an enclosed package. Single-side servicing improves ease of maintenance and lowers overall owner operating costs. The compact package size is ideal for a wide range of commercial and pleasure craft applications. These ratings also have Marine Classification Society approved packages available.

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Minimum Rating
36.0R ekW (45 kVA)
Maximum Rating
99.0 ekW (123 kVA)
Frequency
50 Hz or 60 Hz
Speed
1500 rpm or 1800 rpm
Emissions/Fuel Strategy
EPA Tier 2 (60 Hz), EU 97/68EC Stage II (50 Hz)
Engine Model
In-line 4, 4-Stroke-Cycle Diesel
Aspiration
NA, T, TA
Bore
4.13in
Stroke
5in
Displacement
269in³
Governor Type
Electronic
Excitation
Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds
Pitch
2/3
Number of Leads
12 lead reconnectable
Insulation
Class H
IP Rating
IP23 water protection (IP44 available for certain models, contact your dealer for information)
Voltage Regulator
Solid state voltage regulator with integral voltage adjustment potentiometer
Length
68.9in
Width
47.8in
Height
39.4in
Weight
805 kg (1775 lb) – 1015 kg (2338 lb)
  • Air Inlet System
    • Air cleaner, single element canister type w/ service indicator and rain cap
    • Dry insulated turbocharger (DIT and DITA models only)
    • Glowplug cold start system
  • Cooling System
    • Heat exchanger cooled packages w/ Cupro-nickel tube bundle (sized for 50 o C ambient air and 32 o C sea water) or Keel cooled packages (sized for 50 o C ambient air)
    • De-aeration expansion tank
    • Plate-type engine oil cooler
    • Gear driven centrifugal jacket water pump
    • Gear driven self priming sea water pump
    • Caterpillar Extended Life Coolant (heat exchanger cooled packages)
  • Exhaust System
    • Dry insulated turbocharger
    • Water-cooled exhaust manifolds
  • Fuel System
    • Primary fuel filter / water separator w/ NPT and BSP connectors (ship loose)
    • Secondary fuel filter (LH)
    • Fuel priming pump electric
    • Energize to run shutoff solenoid
  • Generator
    • 12 lead reconnectable
    • 3 phase all models
    • Brushless
    • Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds
    • 2/3 pitch
    • Broad voltage band
    • IP23 water protection
    • Solid state voltage regulator w/ integral voltage adjustment potentiometer
    • Class H insulation
    • Connection poles
  • Lube System
    • Lubricating oil
    • Oil filter (LH)
    • Dipstick (LH)
    • Fumes disposal (closed system)
  • Mounting System
    • Steel base frame with drip pan
    • Anti-vibration mounts
  • Starting/charging System
    • Negative isolated ground electric system
  • General
    • Single side service (LH)
    • Keel cooled gensets do not include the keel cooler(s)
  • Space Heater Kit
    • 240V AC, 120V AC

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Terms and Conditions

Small Excavators Big Savings: Terms and Conditions

* Offer valid from October 1, 2024 through December 31, 2024 on new 313 through 317 Cat® excavators sold by participating Cat dealers to customers in the USA or Canada. Purchase must occur during offer period. Offer subject to machine availability and credit approval by Cat Financial. Not all customers will qualify. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply.

The Great Payback: Terms and Conditions

*Offer valid from October 1, 2024 through December 31, 2024. Offer only available on select new Cat® machines listed in our Heavy Equipment Promotion page. Purchase must occur by December 31, 2024. Offer subject to machine availability. Offer is subject to credit approval by Caterpillar Financial Services Corporation for US customers, and Caterpillar Financial Services Limited for Canadian customers. Not all customers will qualify. The offered Cat Customer Value Agreement (CVA) includes 6 maintenance parts kits; S∙O∙SSM; and 36 month VisionLink® ConnectPro. The maintenance parts cover the first 3,000 hours^ (estimated 3 years) of machine utilization. Each kit contains one set of parts for regular planned maintenance under normal operating conditions. In some severe applications where maintenance parts need to be replaced more frequently, additional parts will be at customer’s expense. Offer excludes additional maintenance parts, dealer labor, wear parts, and fluids. Offer also includes a 36 month/5000 hour (whichever occurs first) Powertrain, Hydraulics and Technology Equipment Protection Plan (EPP). In some areas, EPP might be sold separately from the CVA. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply. Contact your Cat dealer for details.

Compact Equipment Offer: Terms and Conditions

Financing provided by Caterpillar Financial.
*Offer valid from October 1, 2024 through December 31, 2024. Offer only available on purchases of new mini excavators, micro excavators, skid steer loaders, and compact track loaders sold by participating Cat dealers to customers in the USA or Canada. Purchases (both machine and CVA) and machine delivery must occur by December 31, 2024. Offer subject to machine availability. Offer is subject to credit approval by Caterpillar Financial Services Corporation for US customers, and Caterpillar Financial Services Limited for Canadian customers. Not all customers will qualify. The credit $500 USD for CVA purchase can only be applied toward the purchase of a qualifying Cat Customer Value Agreement (CVA). CVA must be at least 2yr/1000hr and must include 1-year Preventative Maintenance Parts Kit, TA1 annual Inspection, signed CVA contract, and Product LinkTM. Amount of CVA credit is the same for all models and cannot exceed the price of the qualifying CVA. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply.

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