The Könner & Söhnen KS 8100iE ATSR is a high-output petrol inverter generator with 8.0kW rated power, 8.5kW maximum power and a pure sine-wave 230V supply. Its electric start, 20-litre tank, integrated transport kit and dedicated ATS connection make it a capable choice for planned backup power, workshops and equipment that needs stable inverter output.
Free UK mainland delivery. For help checking load, socket or ATS requirements, contact Energian before ordering.
At a glance
| Rated / maximum output | 8.0kW / 8.5kW |
|---|---|
| Output | 230V, 50Hz, single phase, pure sine wave |
| AC sockets | 1 × UK 13A household socket; 1 × 32A Commando (CEE) socket — both 230V. |
| Starting | Electric start |
| Petrol tank / runtime | 20 litres / approximately 7.1 hours at 50% load |
| ATS connection | 8-pin output for KS ATS 4/25 Gasoline (ATS unit sold separately) |
| Net weight | 68kg |
Why choose the KS 8100iE ATSR?
- High-output inverter power: 8.0kW rated and 8.5kW maximum output with a pure sine wave suitable for compatible sensitive electronics.
- Automatic backup ready: the 8-pin ATS output connects to the separately available KS ATS 4/25 Gasoline for automatic start, load transfer and shutdown during mains outages.
- Electric starting: the 3-in-1 control combines the fuel valve, choke and electric start for straightforward operation.
- Economy mode: reduces engine speed at lighter loads to help lower fuel consumption.
- Useful monitoring: the LED display shows voltage, frequency and operating hours, with low-oil, overload and short-circuit protection.
- Flexible connections: UK 13A and 32A CEE AC sockets, 12V / 8.3A DC output and two USB outlets.
- Easier movement: integrated wheels and a folding handle help position the 68kg open-frame unit on suitable surfaces.
Power, fuel and connections
Plan your load
Use the 8.0kW rated output for load planning and allow for starting surges. For extended service life, the manufacturer recommends continuous loads no higher than 80% of rated power: 6.4kW.
Choose the correct outlet
The 13A household and 32A CEE outlets are both 230V. Match the appliance, plug, cable, protective device and total load to the intended socket.
ATS installation
The compatible KS ATS 4/25 Gasoline connects through the 8-pin ATS socket. Mains and changeover installation must be designed and completed by a suitably qualified electrician.
Technical specifications
| Rated / maximum output | 8.0kW / 8.5kW |
|---|---|
| Voltage / frequency / phase | 230V / 50Hz / single phase |
| Power factor | 1 |
| Maximum current | 34.8A |
| Waveform | Pure sine wave |
| AC sockets | 1 × UK 13A household socket; 1 × 32A Commando (CEE) socket — both 230V. |
| DC output | 12V / 8.3A |
| USB outputs | 5V / 1A and 5V / 2.1A |
| ATS output | Yes — 8-pin connector for KS ATS 4/25 Gasoline |
| Parallel connection | Not supported |
| Display | Voltage, frequency and operating hours |
| Fuel | Petrol |
|---|---|
| Engine | KS 480i; single-cylinder, four-stroke, air-cooled |
| Displacement / power | 458cm³ / 16hp |
| Starting system | Electric |
| Petrol tank capacity | 20 litres |
| Average runtime at 50% load | Approximately 7.1 hours |
| Engine oil capacity | 1.1 litres |
| Recommended oil | SAE 10W-30 or SAE 10W-40; API SG or higher |
| Starter battery | 1.6Ah lithium battery |
| Emissions standard | EURO 5 |
| Sound pressure / sound power | 70dB(A) at 7m / 95dB(A) LWA |
|---|---|
| Protection rating | IP23M |
| Alternator winding | Copper |
| Product dimensions (L × W × H) | 600 × 510 × 560mm |
| Packed dimensions (L × W × H) | 725 × 505 × 555mm |
| Net / packed weight | 68kg / 71kg |
| Manufacturer model / EAN | KS 8100iE ATSR / 4260405364725 |
Runtime varies with load, fuel quality, weather, altitude and generator condition. Sound pressure at a stated distance and sound power are different measurements and should not be compared directly.
What's included
- KS 8100iE ATSR petrol inverter generator with integrated wheels and folding transport handle
- Screwdriver
- Spark-plug wrench
Engine oil, petrol, appliance leads, the ATS unit and installation materials are supplied separately.
Before first use
Add the recommended engine oil before starting. The generator is transported without oil. Fill and check the 1.1-litre crankcase using SAE 10W-30 or SAE 10W-40 four-stroke oil, then add unleaded petrol rated 90-95 octane with no more than 10% ethanol.
Connect and charge the starter battery as instructed. The battery terminals are disconnected for storage. Observe correct polarity; the manual advises charging the battery before commissioning or allowing the generator to run for at least one hour at 50% load on its first start.
Manuals and downloads
Warranty
Manufacturer's warranty: 1 year or 1,000 operating hours, whichever comes first, from the date of purchase.
The warranty covers manufacturing defects, subject to the manufacturer's warranty conditions. Retain your proof of purchase and any completed warranty documentation supplied with the generator. For help with a warranty claim, contact Energian with your order number, generator serial number and a description of the fault.
Frequently asked questions
Can it power sensitive electronics?
It produces a pure sine-wave 230V / 50Hz supply designed for compatible sensitive equipment. Check each appliance's running and starting requirements and stay within the generator and socket limits.
Can it start automatically during a power cut?
Yes, when connected to the separately available KS ATS 4/25 Gasoline through the generator's 8-pin ATS output. A suitably qualified electrician must design and install any mains-connected backup system.
Does it run on LPG?
No. The KS 8100iE ATSR is a petrol-only model.
How long will it run on a tank?
The manufacturer's current figure is approximately 7.1 hours at 50% load. Actual runtime varies with load, fuel, weather, altitude and equipment condition.
Can I use it in rain?
No. Operate it outdoors for ventilation, but protect it from rain, snow and moisture in accordance with the owner's manual.
Energian support
For help choosing a generator or checking ATS and load requirements, contact Energian on 020 8064 0335 or info@energian.co.uk. For after-sales support, have your order number and generator serial number ready.