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Kohler D300 Generator Set

The Kohler D300 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, will guide you to the perfect generator for your project.

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

Product Description

General Description

The Kohler D300 generator set is a diesel-powered unit produced in France, providing emergency power of 300 kVA and continuous power of 273 kVA at a frequency of 50 Hz and a speed of 1500 rpm. The supplied voltage is 400/230V.


The generator is equipped with a DOOSAN engine with a displacement of 11.05 liters, delivering a maximum power of 272 kW:

  • Number of cylinders: 6
  • Fuel: Diesel
  • Cooling system type: Radiator
  • Consumption at 100% load: 58.1 l/h
  • Consumption at 75% load: 43.6 l/h
  • Consumption at 50% load: 30 l/h


The generator set features 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 390-liter fuel tank, an electronic speed regulator, a preheating system for the cooling liquid (for easy starting in cold seasons), a 12V starting system, a rectifier for charging the battery when the generator is not operating, an alternator for charging the battery during engine operation, and vibration dampers placed between the chassis and the engine-alternator assembly.

APM303 Digital Controller

The control panel is user-friendly even for unskilled personnel, designed to provide extensive details about the generator’s operation. The controller incorporates numerous measurement instruments for the generator’s operation, signaling devices for faults and more, command keys, and indicators for various warning messages, ensuring the proper functioning of the entire assembly.

Soundproof Canopy

The soundproof canopy is constructed 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 83 dB at 1 meter and 73 dB at 7 meters.

Generator Dimensions: L 4004 mm x W 1380 mm x H 2145 mm.

Total Weight: 3250 kg.

AAR VERSO 200 S – 630 A Source Inverter (OPTIONAL)

  • Panel Dimensions: 805mm x 620mm x 485mm.
  • Protection against ±15% fluctuations in frequency and voltage;
  • Phase sequence protection for both the grid and the set;
  • Phase loss protection.
  • LED for signaling the phase alignment of the grid and the set;
  • LED for the status of the electrical grid or the set;
  • LED for the position of the contactor for the grid and the set.

After-Sales Services

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


Kohler Company was established in 1873 in the United States. In 1920, Kohler produced the first modern generator. Its generator division has become increasingly efficient, especially after acquiring the French manufacturer SDMO Industries. At present, Kohler is the third most important generator 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 products from the renowned manufacturer, from portable generators to high-power generator sets (1 – 4500 kVA).

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