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Atlas Copco QAS 45 ID T4F Generator

Atlas Copco QAS 45 ID T4F Generator


The Atlas Copco QAS 45 ID T4F generator is prime power, multi-voltage, sound attenuated, mobile generators. It is powered by an Isuzu Tier 4 Final, liquid-cooled, four-cylinder diesel engine.


The units consist of an alternator, diesel engine, cooling system, electrical distribution and control systems - all enclosed within a sound attenuated enclosure fabricated from powder coated galvannealed steel. A broad range of undercarriage formats and options are available. Special attention has been given to the overall product quality, user friendliness, ease of serviceability, and economical operation to ensure best in class total cost of ownership.




  • Compact, sound attenuated, corrosion resistant enclosure with single point lifting and 110% fluid containment
  • Available as a skid mounted unit with forklift pockets, or on a single axle trailer
  • Heavy Duty alternator with AREP excitation and marine grade protection
  • DeepSea controller
  • Single side servicing with long run filters and 500-hour service intervals
  • Isuzu 4LE engine w/EGR& DOC after-treatment and limited 5-year warranty
  • Identical enclosures and maintenance points between both models
  • Emergency Stop
  • Remote Start / Stop




  • Extremely durable and environmentally sensitive designed to be used for everything from the oil patch to special event power
  • Versatility, giving you the flexibility to match your machine to the correct application
  • Start-up power for the most demanding sites with 300% over load starting capabilites
  • Reliable and intuitive controls for ease of use and diagnostic capabilities
  • Reduced total cost of ownership with easy access for mechanics
  • Proven engine platform with high reliability, a simple maintenance free Diesel Oxidization Catalyst onlyafter treatment
  • Reduces stock of service kits and inventory of parts withrental ROI kept in mind
  • External, recessed emergency stop for increased safety
  • Allows connection as a critical back-up unit via a 2 wire dry contact connection in the distribution panel
  • Get a RENTAL OR SALES Quote
  • QAS 45 Technical Data


    Performance  Units QAS 45 ID 
    Frequency  Hz  60 
    Rated prime power 3ø  kW/kVA  36/45
    Rated standby power 3ø  kW/kVA  40/50
    3ø Power factor    0.8 
    3ø Voltage in 480V switch position (series 480Y / 277 
    Amp capacity @480V  54 
    3ø Voltage in 240-208V switch position (p 240YY / 139-208YY 

    Rated Prime Power @ 2080V 3Ø



    Amp capacity @240V  108 

    Rated Prime Power @ 2080V 3Ø

    kW/kVA  36/45 
    Amp capacity @208V  125 
    Rated prime power 1ø  kW/kVA  22/22
    1ø Power factor   
    1ø Voltage in 120-240V switch position (Zi 240 / 120 
    Amp Capacity @240V  90 
    Amp Capacity @120V  90 x 2 
    Alternator (4 Pole, 12 Wire) Leroy Somer LSA 42.3 S5
    Excitation system   AREP (auxiliary winding)

    Digital Automatic Voltage Regulator (+/- 0.25%)

    Leroy Somer D350
    Insulation   Class H
    Main Breaker - Shunt Trip A 125
    Power Distribution – Terminal Board   5 Wire (L1, L2, L3, N, Ground)
    Terminal Board Connections   Bare Wire Terminals
    Maximum Terminal Cable Size   350MCM
    Convenience Receptacles   2 x NEMA 5-20R & 2 x 125/250V 50A CS6364
    Engine  Units QAS 25 JD
    Model    4LE2X
    US EPA Family   


    US EPA Tier    Tier 4 Final
    Displacement  L 2.2 
    Cylinders  # 4
    Continuous engine output  HP (kW) 59 (44)
    Gross engine power output  HP (kW) 66 (49)
    Rated Speed RPM 1800
    Engine control    ECU
    Aspiration    Turbo w/Intercooler
    Engine oil capacity  US gal 1.9 (7.2)
    Engine coolant capacity  US gal 2.11 (8)
    Max. ambient temperature (@Sea Level) 

    °F (°C)

    122 (50)

    Minimum Starting Temperature 

    °F (°C)

    14 (-10)

    Electrical system (Negative ground)  V 12
    Engine alternator output  A 50
    Battery Capacity (Cold Cranking Amps)  A 685
    Sound Pressure Level @ 23’(7 m) @ 75% Load dB(A) 67


    Fuel System  Units QAS 25 JD
    Fuel Consumption @ 25% load Gal/hr (L/hr) 1.22 (4.54)
    Fuel Consumption @ 50% load Gal/hr (L/hr) 1.83 (6.93)
    Fuel Consumption @ 75% load Gal/hr (L/hr) 2.15 (8.14)
    Fuel Consumption @ 100% load Gal/hr (L/hr) 2.76 (10.45)
    Fuel Type   Ultra-Low Sulfur Diesel ONLY
    Fuel Tank Capacity Gal/hr (L/hr) 75 (284)
    Fuel Autonomy @ 75% load Hr 31.4
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