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Cat Diesel Engine


World Wide Product Support

Full Range of Attachments


Producing reliable power from 4400 to 4850 kVA at 50 Hz, our 3612 diesel generator sets are made to meet your mission critical, continuous, standby and prime applications. We've designed each to ISO 8528-5 transient response requirements and to accept 100 per cent rated load in one step. The generator set is certified for low fuel consumption.

Generator Set Specifications

Minimum Rating 4400 kVA 4400 kVA Less
Maximum Rating 4850 kVA 4850 kVA Less
Emissions/Fuel Strategy Low Fuel Consumption Low Fuel Consumption Less
Frequency 50 Hz 50 Hz Less
Speed 750 & 1000 rpm 750 & 1000 rpm Less
Duty Cycle Prime, Continuous Prime, Continuous Less

Engine Specifications

Engine Model 3612 V-12,4-Stroke Water-Cooled Diesel 3612 V-12,4-Stroke Water-Cooled Diesel Less
Bore 11.0 in 280.0 mm Less
Stroke 11.8 in 300.0 mm Less
Displacement 13524.0 in³ 222.0 l Less
Compression Ratio 13:01 13:01 Less
Aspiration TA TA Less
Fuel System Direct unit injection Direct unit injection Less
Governor Type Generator Set Monitoring System (GMS) Generator Set Monitoring System (GMS) Less

Generator Set Dimensions

Length - Maximum 404.0 in 10261.7 mm Less
Width - Maximum 99.62 in 2530.3 mm Less
Height - Maximum 156.6 in 3977.7 mm Less
Dry Weight - Genset (maximum) 112690.0 lb 51230.0 kg Less

3612 (50 Hz) Standard Equipment

Air Inlet System
  • Air cleaner
  • Turbocharger, watercooled, engine oil lubricated
  • Breather, crankcase, top-mounted
  • Aftercooler, fresh water, corrosion resistant coated (air side)
  • Air inlet shutoff

Cooling System
  • Water temperature regulator
  • Engine coolant water drains
  • Jacket water thermostats
  • Front mounted turbos
  • Three-bundle oil cooler

Exhaust System
  • Dry, gas tight, exhaust manifold
  • 457 mm (18 in) Cat bolt pattern
  • Includes adapter, flexible exhaust fitting

Fuel System
  • Simplex or duplex

Generator System
  • Custom generator per generator data sheet completed by dealer

Governor System
  • UG actuator

Lube System
  • Centrifugal oil filters with single shutoff
  • Oil filler and dipstick
  • Crankcase explosion relief valves
  • Oil pressure regulating valve
  • Wet oil sump. Includes engine-driven main lubrication & oil pumps, Oil Lines and Oil Pan
  • Service side engine mounted on cylinder block inspection covers

Mounting System
  • Damper, torsional vibration
  • Engine and generator mounting

Starting / Charging System
  • Line group for single point custom connection
  • Vane type air starter
  • Two motors, engine mounted at rear, on left side
  • Air silencer

  • Paint, Caterpillar yellow
  • Gear driven pumps: Fuel, Oil, Jacket water, Aftercooler / Oil cooler water

3612 (50 Hz) Optional Equipment

Air Inlet System
  • Vertical support bracket
  • Soot filter
  • Boost control valve
  • Heavy duty air cleaner
  • Air cleaner louver assembly
  • Air inlet adapter

Cooling System
  • Heating aids
  • Auxiliary water pump
  • Expansion tank
  • Heat exchanger for single circuit
  • Cooling system aids

Exhaust System
  • Flexible exhaust fittings
  • Weld flange and related hardware

Fuel System
  • Duplex primary fuel strainer
  • Fuel system connections
  • Fuel priming pump

Generator System
  • Anti-condensation space heaters
  • Class F insulation
  • Busbar connections
  • Winding temperature detectors
  • 3 Phase, six Leads, WYE

Governor System
  • 230 UA
  • EGB actuator
  • Digital programmers
  • Electronic / actuators
  • 723 Plus
  • Battery backup / Power supply

Lube System
  • Oil pan drain valve
  • Lube ANSI adapter (Emergency connection)

Mounting System
  • Spring type vibration isolator
  • Vertically restrained
  • Isolator
  • Non-vertically restrained

Starting / Charging System
  • Compressed air flex hose
  • Redundant Air Starters
  • Pressure reducing valve
  • Turbine type air starters

  • Custom paint colors

Why Choose Cat® Electric Power?

Caterpillar offers a comprehensive variety of electric power systems, customized to fit your needs. Our specialized systems deliver high power and performance in industries across the globe. With Caterpillar, you get outstanding manufacturing quality, expert support, and the essential tools and applications to complete any project.

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EMCP 4 Generator Set Controls

Cat generator sets provide a complete factory-built solution with fully featured standard and advanced controls. Optional accessories enhance the capabilities of the genset package-mounted control system.

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Application Center

Explore valuable resources for generator sizing, specification, and training materials. SpecSizer evaluates load types, collects data, and organizes it to help you select the generator set that's best for you. Find product comparisons, technical data, product sizing, and more using our technical information portal (TIP) specifically created for consultants, architects, engineers, and owners.

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