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48REOZK4, 60 Hz, Tier 4

48REOZK4, 60 Hz, Tier 4

Fuel Type Diesel
Certification US EPA (Certified) Stationary Non-Emergency | US EPA (Certified) Stationary Emergency
Standby Range (kW/kVA) 46-48/46-60
Prime Range (kW/kVA) 42-43/42-53
Frequency 60 Hz
Speed 1800 RPM
Alternator Type 4-Pole, Rotating-Field
Engine Manufacturer Kohler

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  • KOHLER Co. provides one-source responsibility for the generating systems and accessories
  • The 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 one-year limited warranty covers all systems and components. Two- and five-year extended limited warranties are also available
  • Tier 4 Final EPA -Certified for Stationary Emergency and Non-Emergency Applications


  • Kohler designed controllers for guaranteed system integration and remote communication
  • The low coolant level shutdown prevents overheating (standard on radiator models only)
  • Durable steel, sound-attenuating housing with quiet operation of 69 dB(A) @ 7 m (23 ft.) with full load at prime rating
  • 125% environmental containment basin for oil and coolant and 110% secondary containment tank for fuel
  • UL 142 listed subbase fuel tank for 24-hur run time with full load at prime rating (minimum)
  • Customer connection panel with main circuit breaker, remote start connection, and emergency stop switch


  • Kohler's unique Fast-Response(TM) permanent magnet excitation system delivers excellent voltage response and 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
  • Vacuum-impregnated windings with fungus-resistant epoxy varnish for dependability and long life
  • Superior voltage waveform from a two-thirds pitch stator and skewed rotor


  • Uses cooled Exhaust Gas Regeneration (EGR) and Diesel Oxidation Catalyst (DOC) to meet Tier 4 Final without a Diesel Particulate Filter (DPF)
  • Heavy-duty air cleaner with air restriction indicator
  • Lockable battery disconnect switch