iSolar 400 Advanced
iSolar 400 brush head for water flow of 700-1,000 l/h. The 400 mm wide brush cleans small to medium-sized photovoltaic systems. Also suitable for cleaning systems on poles.

The iSolar 400 water-powered rotary brush is suitable for high-pressure cleaners with a water flow of 700 to 1,000 l/h. The brush with a working width of 400 mm is particularly suitable for cleaning small to medium-sized photovoltaic systems. Thanks to its low weight and ease of use, it can also be used to clean pole-mounted systems comfortably.

Technical data:
Flow rate (l/h): 700 / 1000
Inlet temperature (°C): max. 40
Connection thread: M 18
Diameter (mm): 400
Weight including packaging (Kg): 2.55

Areas of application:
• Cleaning of photovoltaic panels.

Compatible devices
• HD 10/21-4 S
• HD 10/21-4 S Classic
• HD 10/21-4 S Plus
• HD 10/21-4 SXA Plus
• HD 10/25-4 S
• HD 10/25-4 S Classic
• HD 10/25-4 S Plus
• HD 10/25-4 SXA Plus
• HD 9/20-4 S
• HD 9/20-4 S Plus
• HD 9/20-4 SXA Plus
• HD 9/23 De
• HD 9/23 De Tr1
• HD 9/23 G
• HD 9/23 Ge Tr1
• HDS 10/21-4 M
• HDS 10/21-4 M Classic
• HDS 10/21-4 MXA
• HDS 1000 Be
• HDS 1000 De
• HDS 1000 De Weed
• HDS 13/20-4 S Classic
• HDS 6/15 C
• HDS 6/15 CXA
• HDS 7/16 C
• HDS 7/16 CXA
• HDS 7/16-4 C Anniversary Edition
• HDS 8/18-4 C
• HDS 8/18-4 CXA
• HDS 8/20 De
• HDS 8/20 G
• HDS 9/17-4 CX
• HDS 9/20-4 M
• HDS 9/20-4 M Classic
• HDS 9/20-4 MXA
• HDS-E 8/16 -4 M 36 kW
• HDS-E 8/16-4 M 12 KW
• HDS-E 8/16-4 M 24KW

Same summary

The Karcher PROFI iSolar 400 Advanced brush is a specialized accessory intended for more demanding users who regularly clean larger or sensitive surfaces, such as solar power plants, glass or facades. The original compatibility and quality of materials facilitate long-term use, especially when working at height, where reliability is often key. Users must check before purchasing whether the brush is compatible with their high-pressure cleaner model; for special purposes that require a very strong or aggressive jet, its use may be less suitable. The advantage of this model is the well-thought-out combination of reach, performance and gentle treatment of sensitive surfaces, which can be beneficial for households or less demanding professional users.

Recommendation source: Enaa guides and team experience.

User view

This type of brush is most often used by users who need to clean large glass surfaces, photovoltaic panels or hard-to-reach parts of the house. Practice has shown that such a task requires a tool that allows easy handling, good coverage and optimal surface protection - which the Karcher PROFI iSolar 400 Advanced also provides. Experience shows that the right tool counts especially when you want to keep sensitive equipment working flawlessly without damage.

Users often trust the Kärcher brand due to its proven quality, the availability of original parts and the wider possibilities of adapting the entire cleaning system to individual needs.

Why buy at Enaa

At Enaa, you can choose from proven accessories from renowned manufacturers, making it easy to find the right equipment for your pressure washer. Clear compatibility information and detailed descriptions are available to help you make your choice. The user experience is designed to make it easy to compare different accessories based on their intended use.

Answers to frequently asked questions

Is the Karcher PROFI iSolar 400 Advanced brush compatible with all Kärcher high-pressure cleaners?

The brush is originally designed for selected models of Kärcher high-pressure cleaners, so it is recommended to check the compatibility catalog or consult the instructions for your model before purchasing.

Which surfaces is the brush best suited for?

This model is particularly suitable for cleaning glass surfaces, solar panels, facades and other sensitive or larger surfaces where gentle and thorough cleaning is crucial.

Does the brush require additional care or cleaning after use?

It is recommended that you remove coarse dirt with a damp or soft cloth after use and check that there is no residue in the bristles that could damage surfaces the next time you use them.

Is it also suitable for professional use?

Although the basic orientation is also intended for advanced home users, it is also chosen by smaller professional contractors for regular and less demanding professional tasks due to its reliability and flexibility.

What should I do if I need a brush to clean extremely stubborn dirt?

To remove particularly stubborn dirt, you may want to consider choosing specialized attachments or nozzles with a stronger jet, but you should always check that the attachment you choose will not damage sensitive surfaces.

Description updated: April 2026