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Kohler K12 Generator Set

The Kohler K12 generator set is specially designed to meet the most demanding requirements, both in standby and Prime. Explore the generator and contact us. A Best Tools representative 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, contact us.

Product Description

General Description

The Kohler K12 generator set, diesel, manufactured in France, produces 12 kVA in emergency mode and 10.9 kVA in continuous mode, at a frequency of 50 Hz and a speed of 1500 rpm. Supplied voltage: 400 / 230 V.

Power Unit

The generator is equipped with a KOHLER KDI engine with a displacement of 1.03 liters, with a maximum power of 8.5 kW:

  • Number of cylinders: 4
  • Fuel: diesel
  • Cooling system type: radiator
  • Fuel consumption at 100% load: 3.3 l/h
  • Fuel consumption at 75% load: 2.5 l/h
  • Fuel consumption at 50% load: 1.8 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 and 4 poles.

Constructive Elements

The generator is equipped with a 50-liter tank integrated under the chassis, electronic speed regulator, pre-heating system for the cooling liquid (for easy starting in cold seasons), 12V starting system, rectifier for charging the battery when the generator is not operating, alternator for charging the battery during engine operation, and vibration dampers placed between the chassis and the motor-alternator assembly.

APM303 Digital Controller

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

Soundproof Hood

The soundproof hood is built from sturdy elements, painted to the highest standards. The hood is equipped with doors that allow easy access to the generator’s components for quick and easy interventions. The soundproofing capacity of the hood is impressive, reducing the noise level to 67 dB at 1 meter and 54 dB at 7 meters.

  • Dimensions of the soundproof generator: L 1750 mm x W 775 mm x H 1230 mm.
  • Total weight: 510 kg.

AAR VERSO 100 S – 35 A source inverter (OPTIONAL)

  • Panel dimensions: 385mm x 385mm x 193mm.
  • Protection for fluctuations of ±15% in frequency and voltage;
  • Protection for phase sequence in the network and in the group;
  • Protection for lack of phase.
  • LED for signaling the phase sequence related to the network and the group;
  • LED for the status of the electrical network or group;
  • LED for the position of the contactor for the network and for the group.

After-Sales Services

In addition to KOHLER generators, Best Tools provides complete 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 over 15 mobile service laboratories and by personnel located in key points in Romania. The central service laboratory in Bucharest lives up to the expectations created by the premium manufacturers we represent.


The Kohler company was established in 1873 in the United States of America. In 1920, Kohler produced the first modern generator. Its generator division became increasingly efficient, especially after acquiring the French manufacturer SDMO Industries. At this moment, 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 the renowned manufacturer, from portable generators to high-power generator sets (1 – 4500 kVA).

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