# Könner & Söhnen KS 12-1E 1/3 ATSR engine-generator 8000 W, 400 V, 55 L tank, steel frame

**URL:** https://aio.lv/en/product--konner-sohnen-ks12-1e13atsr--11569707
**Data updated:** 2026-03-26 06:19 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** könner & söhnen
**Manufacturer code:** KS12-1E1/3ATSR
**EAN:** 4260405363421
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2 407.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 1 990.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--konner-sohnen-ks12-1e13atsr--11569707

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Courier delivery to door | 21.07.2026 | 53.99 EUR |

## Summary description

Portable petrol engine-generator Könner & Söhnen KS 12-1E 1/3 ATSR provides rated power of 8000 W and rated voltage of 400 V. It features a 55 L fuel tank, steel frame and two wheels for mobility. Designed for backup power and site use, suitable for construction, workshops and emergency supply where stable three-phase output and large fuel capacity are required.

## Long description

The Könner & Söhnen KS 12-1E 1/3 ATSR engine-generator delivers rated power of 8000 W at a rated voltage of 400 V and is built for continuous use on sites that require stable three-phase output. This portable petrol generator is driven by a single-cylinder, air-cooled 18.5 HP engine and sits on a robust steel frame with two wheels for mobility. A 55 L steel fuel tank extends runtime between refuels, while an ergonomic control panel with LED display provides hour meter, frequency, voltage and oil alarm information. The unit supports automatic transfer switch (ATS) integration to enable automatic start and load transfer when mains supply fails.
Advantages
The generator uses a high-performance engine designed to meet European emissions and noise standards and is individually serialized for quality control and after-sales tracking. Its alternator features 100% copper winding to withstand heavy loads and provide longer service life compared with aluminum-wound units. The enlarged steel tank with fuel level indicator reduces refuelling frequency, and the ergonomic control panel with LED display and safety shutdown makes monitoring and operation straightforward. ATS compatibility adds hands-free backup capability for emergency power supply.
Suitable for
Construction sites requiring reliable three-phase power for tools and equipment
Workshops and small industrial facilities that need stable mains replacement during outages
Emergency backup for buildings, remote sites or events where automatic transfer is desirable
Temporary power supply for agriculture, pumping stations or lighting installations
Key specifications
Rated power: 8000 W
Rated voltage: 400 V (three-phase)
Engine type: single-cylinder, air-cooled; power rating 18.5 HP
Fuel type: petrol; fuel tank capacity 55 L (steel tank) with fuel level indicator
Alternator: synchronous design with 100% copper winding
Starting system: recoil start with electric start available on more powerful models
Frame: steel frame with two wheels for portability
Control panel: multifunctional LED display (hour meter, frequency, voltage, oil alarm) and emergency engine switch
ATS: supports Automatic Transfer Switch integration for automatic start and stop
How to use
Position the generator on a level, well-ventilated surface and confirm the fuel level using the tank indicator before starting. Check engine oil and cooling air paths, and connect the generator to the load or ATS panel according to local electrical codes. Use the ergonomic control panel to monitor voltage, frequency and running hours; the oil alarm will alert you to low oil conditions. Start the engine using the easy start system; if the model includes electric start, use the starter switch. When finished, switch off connected loads and allow the engine to run briefly at no load before stopping to stabilize operating temperatures.
Usage recommendations
For safe and reliable operation, follow the manufacturer’s maintenance schedule: regularly check and change engine oil, inspect and clean air filters, verify tightness of fuel lines and terminals, and ensure the alternator connections are secure. When used as an emergency backup with an ATS, have the automatic transfer switch and wiring installed and inspected by a qualified electrician according to applicable regulations. Store fuel safely and refuel only with the engine stopped and cooled.

## Specifications

| Feature | Value |
|---|---|
| Weight | 120 kg |
| Package weight | 136000 g |
| Height | 680 mm |
| Width | 705 mm |
| Depth | 790 mm |
| Product colour | Black, Teal |
| Noise level | 71 dB |
| Castor wheels | Yes |
| Rated current | 35 A |
| Package depth | 800 mm |
| Package height | 780 mm |
| Package width | 715 mm |
| Maximum power | 8200 W |
| Cooling type | Air |
| Rated power | 8000 W |
| Fuel type | Petrol |
| International Protection (IP) code | IP23 |
| Frame material | Steel |
| Oil level indicator | Yes |
| Number of wheels | 2 wheel(s) |
| Fuel tank capacity | 55 L |
| Emergency button | Yes |
| Ignition system | Manual/Electronic |
| Number of outlets | 3 |
| Spark plug wrench | Yes |
| Rated voltage | 400 V |
| Rated frequency | 50 Hz |
| Fuel level indicator | Yes |
| Engine displacement | 625 cm³ |
| Engine power | 18.5 hp |
| Number of strokes | 4 |
| Number of cylinders | 1 |
| Output power capacity (max) | 11.5 kVA |
| Rated DC voltage | 12 V |
| Compliance certificates | CE |

## FAQ

### How much does the Könner & Söhnen KS 12-1E 1/3 ATSR engine-generator cost, and is it available for purchase?

The price is 2,407.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 16.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Könner & Söhnen KS 12-1E 1/3 ATSR engine-generator be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All könner & söhnen products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized könner & söhnen service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Könner & Söhnen KS 12-1E 1/3 ATSR engine-generator?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11569707/66597609_large.webp