C175-20 (60 Hz)

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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

SR5 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

EMCP 4 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 50°C (122°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities


  • UL2200
  • IBC seismic certification
  • OSHPD pre-approval
  • EU Certification of Conformance (CE)
  • EEC Declaration of Conformity

One Safe Source

  • Components used in the generator set are selected at the design stage to provide optimum package 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

C175-20 (60 Hz) Standard Equipment

Air Inlet System
  • 4 x Single element air cleaner canisters with service indicator(s).

Control Panel
  • Lamp test
  • oil pressure (psi, kPa or bar)
  • Operating hours
  • 4 programmable relay Inputs
  • Environmental sealed front face.
  • Volts (L-L & L-N)
  • Amps (per phase & average)
  • Low Coolant level
  • Coolant temperature
  • Engine cool-down timer.
  • High Coolant temperature
  • Frequency (Hz)
  • EMCP 4.2
  • Digital indicators:
  • Overspeed
  • True RMS AC metering, 3-phase, +/-2% accuracy
  • Speed adjust
  • Warning / shutdown Indicators:
  • 24-volt DC operation
  • Engine cycle crank
  • 4 programmable relay output
  • Text alarm / event descriptions.
  • Emergency stop pushbutton
  • Auto / start / stop Control
  • RPM
  • Wall mounted controls:
  • Low oil pressure
  • Alarm acknowledge
  • DC Volts
  • Failure to start (overcrank)
  • Emergency stop

Cooling System
  • SCAC cooling
  • Coolant sensors
  • AC Inlet: 6" ANSI / AC Outlet: 3-1/2" ANSI
  • JW Inlet: 6" ANSI / JW Outlet: 5" Cat Flange

Exhaust System
  • Dry exhaust manifold
  • Dual ANSI 18" / DIN 450 flanges. Shipped loose. Support required from installation

Fuel System
  • Primary fuel filter water / fuel water separator
  • 4 Micron spin on type
  • Engine mounted filters x 3
  • Secondary / tertiary fuel filters
  • Filters x 3
  • 10 Micron spin on yype

Generators and attachments
  • 3 Phase brushless
  • Exciter diode monitor
  • Salient pole
  • RFI suppression
  • 6 Leads
  • Anti condensation space heater
  • IEC Platinum stator RTDs
  • Class H temperature rise at 40C ambient
  • Form wound
  • 3 Phase voltage sensing
  • Min / max exciter limiter
  • Permanent magnet
  • Right side extension box, bottom cable entry
  • Reactive droop capability
  • NEMA Class H insulation
  • Voltage regulator:

Governing System
  • ADEM A4
  • Redundant shutdown (Overspeed protection through a duplicate speed sensing system)

Lube System
  • Oil filter, filler and dipstick
  • Gear type lube oil pump
  • Fumes disposal
  • Lubricating oil
  • Integral lube oil cooler
  • Oil drain lines and valve

Mounting Systems
  • Rails - Engine / generator
  • Rubber anti-vibration mounts (shipped loose)

Starting / Charging System
  • Battery disconnect switch
  • Batteries and battery rack w/cables
  • Dual 24 volt electric starting motors

  • Right hand service
  • Paint - Caterpillar yellow with high gloss black rails
  • SAE standard rotation

C175-20 (60 Hz) Optional Equipment

Control Panel
  • Customer interface options
  • Annunciator modules
  • EMCP 4.3
  • Speed adjust
  • EMCP voltage and current sensing groups
  • Generator Harness
  • Generator temperature monitoring
  • E-Stop
  • Modbus monitoring of packages
  • Load share module
  • Interconnect harness
  • EMCP and MV and HV power connection locations
  • Vandal proof panel door

  • Internal excitation (IE)
  • Permanent magnet excitation (PMG)
  • Anti-condensation heater
  • Oversize and premium generators

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

Air Inlet Systems
  • Single element air cleaner

Cooling System
  • Fuel cooler
  • Package mounted radiators
  • Remote radiators

Exhaust System
  • Front housing - Standby or mission critical
  • Exhaust collectors / Manifold
  • Mufflers (15, 25 and 34 dBA silencers)
  • Front housing - Prime or continuous

Fuel System
  • Primary fuel filter

  • Engine barring group
  • Manual
  • Control GP - Air powered bar group
  • Engine Air powered
  • Barring groups:
  • Special paint - 3500

Generators and Attachments
  • Differential current transformers
  • Medium Voltage - 3000 Frames - 60 Hz, 3 phase, 1800 rpm, FW, PM, No of leads=6, Pitch 0.6667
  • Generator air cleaner
  • Thermostat for space heater

  • Pyrometer and thermocouples

Lube System
  • Lube oil heater
  • Drain group oil pans
  • Electric prelube pumps
  • Oil filters
  • Lubricating oil

Crankcase Systems
  • Crankcase ventilation system
  • Explosive relief valves

Mounting System
  • IBC vibration isolators - Shipped loose
  • Rubber anti-vibration mounts
  • Spring type linear vibration isolators

Special Tests / Reports
  • Custom genset TVA report
  • PGS test report @ 0.8 power factor
  • Genset fuel consumption test
  • Special test charge - Engine only
  • Standard genset TVA (Torsional Vibration Analysis) report
  • PGS test report @ 1.0 power factor
  • Standard engine test charge
  • Generator test report

Starting / Charging System
  • Air pressure regulator
  • 20 Amp battery chargers
  • 50 Amp battery chargers
  • 24 Volt electric starting motors
  • Air starting motor
  • Starter location covers
  • Charging alternators - Dry
  • 24 Volt battery sets - Dry
  • Jacket water heaters
  • 35 Amp battery chargers


Producing reliable power from 2500 to 3100 ekW at 60 Hz, our C175-20 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, U.S. EPA Stationary Emergency Use only.

Generator Set Specifications

Minimum Rating 3150 ekW 3150 ekW Less
Maximum Rating 4000 ekW 4000 ekW Less
Emissions/Fuel Strategy Low Fuel Consumption Low Fuel Consumption Less
Voltage 4160 to 13800 Volts 4160 to 13800 Volts Less
Frequency 60 Hz 60 Hz Less
Speed 1800 rpm 1800 rpm Less
Duty Cycle Standby, Mission Critical, Prime, Continuous Standby, Mission Critical, Prime, Continuous Less

Engine Specifications

Engine Model C175-20 SCAC, V-20, 4-Stroke Water-Cooled Diesel C175-20 SCAC, V-20, 4-Stroke Water-Cooled Diesel Less
Bore 6.89 in 175.0 mm Less
Stroke 8.66 in 220.0 mm Less
Displacement 6456.31 in³ 105.8 B Less
Compression Ratio 15:03:01 15:03:01 Less
Aspiration Turbo Aftercooled Turbo Aftercooled Less
Fuel System Common Rail Common Rail Less
Governor Type ADEM™ A4 ADEM™ A4 Less

Generator Set Dimensions

Length - Minimum 261.5 in 6642.8 mm Less
Length - Maximum 330.6 in 8397.0 mm Less
Width - Minimum 85.4 in 2170.2 mm Less
Width - Maximum 127.7 in 3244.0 mm Less
Height - Minimum 87.6 in 2224.3 mm Less
Height - Maximum 150.7 in 3827.0 mm Less
Dry Weight - Genset (minimum) 55100.0 lb 25000.0 kg Less
Dry Weight - Genset (maximum) 66200.0 lb 30000.0 kg Less

Application Centre

Explore valuable resources for generator sizing, specification, and training materials. SpecSizer evaluates load types, collects data, and organises 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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