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Kohler J250K Generator Set

The Kohler J250K generator set is specially designed to meet the most demanding requirements, both in standby and prime applications. Explore the generator and contact us. A representative from Best Tools will provide you with all relevant information and, if necessary, guide you to the perfect generator for your project.

*For price quotes and other details, please contact us.

Product Description

General Description

Kohler J250K Generator Set, diesel, manufactured in France, with capacities of 250 kVA in emergency mode and 227 kVA in continuous mode, at a frequency of 50 Hz and a speed of 1500 rpm. Supplied voltage: 400 / 230 V.


The generator is equipped with a JOHN DEERE engine with a displacement of 6.72 liters and a maximum power of 228 kW:

  • Number of cylinders: 6
  • Fuel: diesel
  • Cooling system type: radiator
  • Consumption at 100% load: 47.7 l/h
  • Consumption at 75% load: 35.9 l/h
  • Consumption at 50% load: 24.4 l/h


The generator set is equipped with a Kohler alternator with direct coupling, self-excited without brushes, insulation class H, protection degree IP 23, with 3 phases / 4 poles.

Constructive Elements

The generator is equipped with a 340-liter tank integrated under the chassis, electronic speed regulator, preheating system for the cooling liquid (for easy starting in cold seasons), 12V starting system, rectifier for charging the battery when the generator is not in operation, alternator for charging the battery during engine operation, and vibration dampers placed between the chassis and the engine-alternator assembly.

Digital Controller APM303

The control panel is easy to use, even for unskilled personnel, designed to provide a wealth of details about the generator set’s operation. The controller incorporates dozens of measurement instruments for the generator’s operation, signaling devices for faults and more, control keys, and indicators for various warning messages and proper operation of the entire assembly.

Soundproof Canopy

The soundproof canopy is built from durable elements, painted to the highest standards. The canopy is equipped with doors that allow easy access to the generator set components for quick and easy interventions. The soundproofing capacity of the canopy is impressive, reducing the noise level to 82 dB at 1 meter and 71 dB at 7 meters.

  • Dimensions of soundproof generator: L 3508 mm x W 1200 mm x H 1830
  • Total weight: 2400 kg.

Source inverter AAR VERSO 200 S – 400 A (OPTIONAL)

  • Panel dimensions: 805mm x 620mm x 485mm.
    Protection against ±15% fluctuations in frequency and voltage;
    Protection against phase reversal in the network and the group;
    Protection against phase loss.
    LED for signaling the phase alignment of the network and the group;
    LED for the status of the electrical network or the group;
    LED for the position of the contactor for the network and the group.

After-Sales Services

In addition to Kohler generator sets, Best Tools offers complete services: consultancy, training, warranties, maintenance contracts, a complete range of related equipment, delivery, installation, and commissioning. Best Tools Company technicians are directly trained by KOHLER, regularly participating in training sessions organized in Brest, France. National coverage is ensured by more than 15 mobile service laboratories and personnel located at key points in Romania. The central service laboratory in Bucharest meets the expectations of the premium manufacturers we represent.


Kohler was founded in 1873 in the United States. In 1920, Kohler produced the first modern generator. Its generator set division has become increasingly efficient, especially after acquiring the French manufacturer SDMO Industries. At present, Kohler is the third most important generator set manufacturer in the world, being a true trendsetter in the field.

Best Tools Company is the exclusive Kohler dealer in Romania and neighboring countries, distributing the complete range of the renowned manufacturer, from portable generators to high-power generator sets (1 – 4500 kVA).

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