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Fuel / Emissions Strategy

• Meets U.S. EPA Tier 4 Final emission standardsand CARB certified for non-road mobileapplications at all 60 Hz ratings

Cat C4.4 ACERT Diesel Engine

• Four-stroke diesel engine with ACERTtechnology combined with electronic enginecontroller offers consistent performance andexcellent fuel economy

Cat Clean Emissions Module (CEM)

• Engine mounted Aftertreatment modulecontains of Diesel Oxidation Catalyst (DOC) and Selective Catalytic Reduction (SCR)

Cat Generator

• Matched to the performance and outputcharacteristics of Cat engines

Cat Integrated Voltage Regulator (Cat IVR)

• Three-phase sensing

Sound-attenuated Enclosure

• Provides excellent weather protection and allows fora quiet package operation with less than 66 dBAsound levels at full load, while offering excellentservice access with multiple doors and access panels

Reduced Environmental Impact

• 110% spill containment of onboard enginefluids

Charging System

• Charging alternator; 12V-100A, heavy duty withintegral regulator and belt guards


The Cat XQ125 is powered by a C 4.4 ACERT™ industrial diesel engine offering the perfect balance of durability, efficiency and low emissions. With advanced research and development techniques, the after treatment system is precisely matched to the engine ensuring performance is optimized for maximum productivity.


Rating 80 ekW (125 kVA) Prime 80 ekW (125 kVA) Prime Less
Frequency 60 Hz 60 Hz Less
Voltage 120 - 480 V 120 - 480 V Less


Engine C4.4 ACERT Diesel Engine C4.4 ACERT Diesel Engine Less
Fuel Diesel Diesel Less


Width 49.0 in 1244.6 mm Less
Height 73.0 in 1854.2 mm Less
Length 127.0 in 3225.8 mm Less
Weight 5230.0 lb 2372.3 null Less

XQ125 Standard Equipment

Engine Air Inlet
  • Heavy-duty air cleaner with dust cup andservice indicator

DEF System
  • 25 gal (96 L) plastic DEF tank providescapacity to meet or exceed fuel tank runtimeat any given load.

Fuel System
  • 150 gal (568 L) double-wall fuel tank

Mounting System
  • Generator set soft mounted to the heavy duty, fabricated steel base frame

Control Panel
  • EMCP 4.2B generator set mounted digital controller

Cooling System
  • Variable speed pusher fan

Distribution System
  • Separate load and control sections

  • Sound attenuating, galvanized sheet metal enclosure limits overall noise

  • Cat C9 ACERT heavy duty diesel engine

Exhaust System
  • Integrated spark arresting silencer with flexible connectors, in separate compartment

  • LC5114J frame, three-phase, random wound, 12-lead design, self-excited, 2/3 pitch

Lube System
  • On-engine primary and secondary oil filters, filler, and dipstick

Starting System
  • Single electric starting motor, 24V

Shore Power
  • One 110V shore power connection for powering engine block heater and generator space heater (optional), battery charger (optional), and single duplex service receptacle

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