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KD3250-4, 60 Hz, Tier 4

KD3250-4, 60 Hz, Tier 4

Fuel Type Diesel
Certification US EPA (Certified) Stationary Non-Emergency | US EPA (Certified) Stationary Emergency
Standby Range (kW/kVA) 3250/4062
Prime Range (kW/kVA) 2950/3688
Frequency 60 Hz
Speed 1800 RPM
Alternator Type Brushless, Permanent-Magnet Pilot Exciter
Engine Manufacturer Kohler

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  • KOHLER Co. provides one-source responsibility for the generating systems and accessories
  • The KOHLER Diesel Powered generator set and its components are prototype-tested, factory-built, and production-tested
  • The 60 Hz generator set offers a UL 2200 listing.
  • The 60 Hz generator set meets NFPA 110, Level 1, when equipped with the necessary accessories and installed per NFPA standards
  • A three-year limited warranty for standby applications covers all systems and components. Five- and ten-year extended warranties are also available.
  • A standard two-year warranty for prime applications and a standard one-year warranty for continuous applications covers all systems and components. Five-year extended warranties for prime applications are also available.


  • Controllers are available for all applications
  • The low coolant level shutdown prevents overheating (standard on radiator models only)
  • An electronic, isochronous governor delivers precise frequency regulation
  • Multiple circuit breaker configurations


  • The pilot-excited, permanent-magnet (PM) alternator provides superior short-circuit capability
  • NEMA MG1, IEEE, and ANSI standards compliance for temperature rise and motor starting
  • Sustained short-circuit current of up to 300% of the rated current for up to 10 seconds and enables down stream circuit breakers to trip without collapsing the alternator field
  • Self-ventilated and drip-proof construction
  • Superior voltage waveform from two-thirds pitch windings and skewed stator
  • Brushless alternator with brushless pilot exciter for excellent load response