The Cat® XQ425 provides world class performance and enhanced usability. This model is powered by the fuel-efficient Cat C13 ACERT® engine equipped with the Cat NOx Reduction System. Equipped with the new EMCP 4.4 control panel, the XQ425 features a user-friendly interface and automatic generator set paralleling. A principle advantage of the control system offers simpler and faster voltage changes. Providing greater flexibility when moving between multiple job sites with differing frequency and voltage needs, the auto-configuration capability eliminates the time required when reprogramming units and potential errors. Additional features include lower noise levels and improved part load fuel consumption.

Product Specs


Prime Rating
340 kW
208 - 600 V
50/60 Hz
375 ekW (470 kVA) Standby


Requires ULSD
Cat® Diesel Engines
C13 ATAAC, I-6 4-stroke water cooled diesel


Width - Without Trailer
Width - With Trailer
Height - Without Trailer
Height - With Trailer
Length - Without Trailer
Length - With Trailer
Weight - Without Trailer, With Lube Oil and Coolant
Weight - With Trailer, Lube, Oil and Coolant


  • Air Inlet
    • Air cleaner, two stage cyclonic/paper with dust cup and service indicator
  • Charging System
    • UL/CSA listed 120 V, 20 Amp battery charger, shock mounted and enclosed in dust proof housing
  • Control Panel
    • EMCP 4.2 genset mounted controller
  • Cooling System
    • Package mounted radiator with vertical air discharge provides 43° C ambient capability at prime +10% rating
  • Distribution System
    • NEMA 1 steel enclosure, separate hinged, lockable door with rust resistant pinned hinges
  • Enclosure
    • Sound attenuating, 12 gauge sheet metal enclosure limits overall noise to 77 dB(A) @ 7m (23')
  • Engine
    • EPA Tier 4 Final certified Cat C13 ATAAC heavy duty diesel engine
  • Clean Emissions Module
    • Cat Clean Emissions Module comes with integrated DOC, DPF & SCR and is located in separate compartment
  • Def System
    • 12 gal plastic DEF tank provides 24 Hrs run time @ 75 % Prime + 10% rating similar to fuel system. DEF tank is equipped with integrated pump, level sensor to display the DEF level in EMCP panel and electrically heated lines from DEF tank to CEM. Equipped
  • Fuel System
    • 520 gal (1970 L) double wall fuel tank, UL142, ULC, and Transport Canada certified, 27 hr runtime @ 75% prime +10% rating, internal fuel fill
  • Generator
    • SR4B 450 frame, three-phase, random wound, 12-lead design, permanent magnet excited, 0.750 pitch
  • Lube System
    • Pump, integral oil cooler, lube oil, filter, filler and dipstick, and oil sampling valve
  • Mounting System
    • Generator set soft mounted to the heavy duty, fabricated steel base frame
  • Starting System
    • Single electric starting motor, 24V
  • General
    • Canadian Standards Authority (CSA) certified

Optional Equipment

  • Cat Emcp 4.4 Control Panel
    • Simple user friendly interface and navigation
    • Automatic set-point adjustment integrated with voltage and frequency selection
    • UL508A recognized
    • Convenient service access for Cat Service tools (not included)
    • Integration with the Cat DVR provides enhanced system monitoring
    • Ability to view and reset diagnostics of all controls networked on primary CAN datalink eliminates need for separate service tools for troubleshooting
    • True RMS AC metering, 3 phase
    • Multiple stored setpoint group selection via switched input eliminates need to reprogram control when switching voltages and frequencies
  • Emcp 4.4 Engine Operator Interface
    • Controls
    • Digital indication for
    • Shutdowns with common indicating light for
    • Emergency stop pushbutton
    • Panel illuminating lights
    • Display navigation keys including two shortcut keys for Engine Parameters, Generator Parameters, Control and main menu
    • Fuel level monitoring and control
  • Emcp 4.4 Generator Protective Relaying
    • Generator protective features provided by EMCP 4.4
  • Modes Of Operation
    • Provides for
    • Single Unit Stand-Alone Mode
    • Multi-Unit Mode

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