LPG/gasoline inverter generator KS 4000iEG S

Max power4.0** kW
Nominal power3.5** kW
Engine startManual/electric
Outlets2 x Schuko 230 V
Special functionsLPG/gasoline, Protective housing, Parallel connection


The KS 4000iEG S LPG/gasoline inverter generator of the German brand “Könner & Söhnen” is a convenient, compact and almost noiseless source of electric power. One of the main features of this model is that it produces electric current with the pure sine wave.

All models are based on robust engines, which meet all European quality standards, including EURO V. Engines of K&S inverter generators have an Economy mode, which allows using the generator at low speeds and reduces fuel consumption by up to 50%. Alternator with copper winding and high-performance K&S engine guarantee trouble-free and long-term operation and meet all European quality standards. The LED display makes it possible to monitor the operation of the generator and to carry out its maintenance in time.

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.


The generator runs on both gasoline and liquefied gas (propane-butane) and includes everything necessary for using LPG as fuel: a hosepipe with reducer, which provides a reliable connection of a gas cylinder. Just connect the generator to the gas cylinder and start the engine.

Versatility of use

You can use generator with both a portable gas cylinder and with a stationary capacity for gas storage (gasholder). Connection has to be made by a certified specialist. The pressure in the supply system must not exceed 16 Bar.

Low noise level

Thanks to a special protective housing, which provides a minimum noise level of 66 dB, the operation of the device will be as comfortable as possible and will not disturb others.

Economy mode

The ergonomic control panel is equipped with a fuel economy mode switch. This mode reduces fuel consumption by up to 50% at small loads due to lower engine revolutions.

Robust engine

The Könner & Söhnen reliable engine is characterized by increased durability, long and stable operation, and meets all European quality standards, including EURO V.

Ergonomic control panel

Ergonomic control panel is equipped with LED display, two USB ports 5 V/1 A, 5 V/2.1 A, typical 12 V car socket, ECONOMY MODE switch, operating status indicators, generator parallel connection output for double power receiving as well as RESET button for resetting the control system (upon tripping of the circuit breaker) and restoring power supply.

High quality alternator

Könner & Söhnen inverter generators are equipped with a robust brushless alternator with 100% copper winding. The high-end compact permanent magnet alternator is housed in a plastic casing and can withstand maximum loads without any damage to ensure long-term and reliable operation of the generator set.

Parallel connection

119 €
Peak power demandim Standby-Modus: 0,36 W, im Betriebsmodus: 1,2 W W
Power (230V)5.75 (11.5) kW
Current (max) 230 V25 (50) A
Power 400V13 kW
Current (max) 400 V25 A
IP protection classIP41
Insulation classAC1.0KV / 1min 1mA
Maximum battery charging current from the built-in power supply, A
Control cable length5 m
Net dimensions (LxWxH)320х250х140 mm
Gross dimensions (LxWxH)405х325х200 mm
Net weight1.36 kg
Gross weight1.60 kg
Outlets1 x Schuko 230 V, 1 x CEE 230 V 32 A
Cable (100% cooper)AWG 2.08 mm2
EAN code4260405362530

The ATS (Automatic transfer switch) unit automatically starts the generator and transfers load to it when the main power supply is disconnected.

Gasoline and diesel generators with an electric starter are equipped with a 8-pin connector for an automatic transfer switch unit (ATS input). The ATS unit has a PLC that allows the automatic start/stop of the generator to be programmed in the event of a power outage and after its restoration.


  • Automatic/manual operation
  • Programming of engine starting time after power outage
  • Programming of engine warm-up time before connecting to consumer
  • Setting of starter operation time
  • Engine performance monitoring
  • Battery charging when the generator is off

Parallel connection ensures insreased power. Using a parallel connection device connected to a special socket on the generator, you can pair the generators and connect devices with greater power. It is suitable for all Könner & Söhnen inverter generators, except for the KS 8100 series models (KS 8100iE, KS 8100iEG, KS 8100iE ATSR, KS 8100iEG ATSR).

Transportation kit

Könner & Söhnen Inverter generators are equipped with a transport system for easy movement. Two wheels and a handle that lifts when the generator is moved ensure comfortable transportation and mobility.

Accessories set

Generator is equipped with additional accessories: spark plug wrench, hosepipe with pressure reducer, PH2 screwdriver 6.0 mm.

Max power, kW
Nominal power, kW
Frequency, Hz
Current (max), А
2 x Schuko 230 V
Engine start
Fuel tank volume, l
Avg. working time (power 50%), h***
LED display
Load, fuel level, voltage, frequency, working hours; overload indicator, voltage indicator, oil level indicator.
Noise level Lpa (7m)/Lwa, dB
Power output DC, V/А
5V/1A, 5V/2.1A
Engine model
KS 240i
Engine cylinder volume, cm3
Engine type
LPG/gasoline powered one-cylinder, four-stroke air-cooled
Engine power, hp
Possibility of parallel connection
Crank case volume, l
Accumulator, A·h
Net dimensions (LxWxH), mm
Gross dimensions (LxWxH), mm
Net weight, kg
Gross weight, kg
Protection class
EAN code

Assembled in PRC.

**LPG operation reduces generator power by 10%.

*** Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical condition of the generator.