Micro Inverter 450 W WiFi App BKW450


  • High-quality micro-inverter for balcony power plants with 400 W output power.
  • MPPT function maximises the output of your PV System
  • 1 set of MC4 plug and socket for 1 solar module
  • IP 65 rating protects the inverter against dust and water jets
  • WiFi app for monitoring and controlling your system
299,99 €

incl. 19% VAT , plus shipping costs

Manufacturers recommended retail price: 339,99 €
(Save 11.77%, i.e. 40,00 €)

Delivery time: 10 Workdays

Available from: 12.10.2022 (Pre-orders possible)


Micro Inverter 450 W WiFi App BKW450

The ideal micro inverter for balcony power plants with high-performance PV modules with a maximum output power of 400 W at 230 V mains voltage.

One photovoltaic module with an output of up to 450 Wp can be connected per BKW450 Micro Inverter. The total output must not exceed 3.6 kW per earthed socket. With a 3-phase feed-in, you can use 3.6 kW per phase. If you wish to operate the system with a Wieland plug and feed socket, you have the option of purchasing these separately from a retailer and having the plug converted by a qualified electrician.

MPPT technology (Max Power Point Tracking) makes optimal use of the power of your photovoltaic panels.

With the KKT KOLBE Control WiFi app, you are not only always well informed about the performance and status of your system, the app is also compatible with all Smart Life devices. Scenes can be created via the app in which, for example, a smart socket is switched from a certain output power.

The mains and system protection (NA protection) ensures immediate shutdown of the inverter in the event of a fault (e.g. mains disconnection or mains isolation).

Mounting material is not included in the scope of delivery

Depending on availability, the model offered or an identical model with a different designation may be supplied.

Technical data

Input power

  • Number of MC4 connections: 1 set
  • Maximum input power: 450 W
  • Maximum input voltage: 52 V
  • Maximum input current: 12 A

Output power

  • Peak Efficiency: 94 %
  • Maximum output power: 400 W
  • Nominal output voltage: 230 V
  • Nominal output current at 230V: 1.73 A
  • Output frequency: 50 Hz / 60 Hz


  • Operating temperature -40°C to +65°C
  • Length: 25.3 cm
  • Width: 20 cm
  • Height: 4 cm
  • Weight: 1.2 kg
  • Protection class: IP 65
  • Communication to the DataBox: 2.4 GHz WLAN
  • Warranty: 2 years

Information video on the subject of balcony power plants

Information video on registration in the Market Master Data Register (MaStR)


Main Colour: Black
Power: 400W
Inverter technology: Microinverter
Connection type: MC4
System configuration: On Grid


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