Automatic Transfer Switch KS ATS 4/25 Gasoline


Peak power demand, W in standby mode: 0.36 W, in operating mode: 1.2 W
Voltage 230V/ 400V
Power (230V), kW 5.75 (11.5)
Current (max) 230 V, A 25(50)
Power 400V, kW 13
Current (max) 400 V, A 25
Working environment
from -10°C to +55°C; humidity: ⩽60%
Storage environment from -10°C to +70°C; humidity: ⩽60%
IP protection class IP41
Insulation class AC1.0KV / 1min 1mA
Maximum battery charging current from the built-in power supply, A 2
Control cable length 5m
Net dimensions (LxWxH), mm 250 х 140 х 320
Gross dimensions (LxWxH), mm 325 х 200 х 405
Net weight, kg 6.0
Gross weight, kg 6.5
EAN code 4260405364787


Assembled in PRC.


SKU KSATS425G Categories Tags ,

The KS ATS 4/25 Gasoline ATS (Automatic Transfer Switch) unit from the German brand “Könner & Söhnen” automatically starts the generator and transfers load to it when the main power source is turned off and automatically stops the generator when the central power supply is restored. It is compatible with gasoline inverter generators that are equipped with a 8-pin connector for an automatic transfer switch unit (ATS input).

The ATS unit has a PLC for programming the engine starting time after power outage, the engine warm-up time before connecting power consumers as well as for signaling errors. It has a generator emergency stop button. The ATS unit can operate both in automatic and in manual mode.


  • 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


The KS ATS 4/25 Gasoline ATS unit is compatible with Könner & Söhnen gasoline inverter generator KS 8100iE ATSR with integrated 8-pin ATS connector.

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