KSB 21i S

Inverter generator
Max power 2.0 kW
Nominal power 1.8 kW
Engine power 2.9 hp
Engine start Manual
Fuel type Gasoline
Engine model KSB 100i
Outlets 2×16А
Net weight 20 kg
Voltage 230 V
Frequency 50 Hz

Pure sine wave

The integrated microprocessor-controlled electronic unit controls the generator operation and provides the most stable frequency of 50 Hz and voltage of 230 V. This makes the generator ideally suited for sensitive and high-precision electronics, electronic measuring instruments, medical devices, heating boilers, etc.

Compact size

The compact size and light weight of K&S Basic TM inverter generators make them convenient to use and store. This makes them easy to use and indispensable on a camping trip or on a picnic.

Robust engine

The robust K&S Basic engine meets all European quality standards, including the latest EURO V emission standards. The proprietary robust K&S engine has its own individual serial number, which allows us to control the quality of production and service.


K&S Basic generators are equipped with a high-end synchronous alternator with 100% copper winding. It is only the copper winding that can withstand maximum loads without any damage to ensure long-term reliable operation of the generator set.

Convenient ergonomic control panel

Convenient ergonomic panel allows to operate generator easily and does not demand additional skills. Engines of inverter generators from Könner & Söhnen have an Economy mode. This mode allows using the inverter generator at low speeds and reduces fuel consumption by up to 50%. The air choke control system adjusts the engine speed depending on the load.


Thanks to a special protective housing, which provides a minimum noise level of 59 dB, the operation of the device will be as comfortable as possible and will not disturb others.

Accessory kit

Filling funnel, screw-driver and spark plug wrench are included.

Max. power, kW 2.0
Nominal power, kW 1.8
Engine power, hp 2.9
Frequency, Hz 50
Voltage 230
Current, А (max) 8.6
Output 12V, A 12V/5A
Engine model KSB 100i
Engine cylinder volume, cm3 79.5
Engine type Gasoline 4 stroke cycle engine
Outlets 2x16A
Power factor, cos φ 1
Fuel tank volume, l 4.0
Crank case volume, cm3 0.4
Engine start Manual
Noise level Lpa (7m)/Lwa, dB 59/93
Net dimensions (L*W*H), mm 540х300х450
Gross dimensions (L*W*H), mm 545х320х450
Net weight, kg 20
Gross weight, kg 22
Protection class IP23M
EAN code 4260405363889

Assembled in PRC.