Solar Controller SR-R400 for installation on a DIN rail

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Solar Controller SR-R400 with 2 Outputs, 4 Inputs and Energy Yield for installation on a mounting rail

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In stock

45,00 € VAT included

1 kg
Delivery: 3-7 days

Data sheet

Inputs (sensors)6
RPM controlYes
Energy YieldYes
Collector protectionYes
Tube collectors functionYes
Recooling (holiday mode)Yes
Free Controller1

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Solar Controller SR-R400 with 2 Outputs, 4 Inputs and Energy Yield for installation on a DIN rail

The solar controller SR-R400 is a high-performance, microprocessor-controlled unit for controlling solar thermal systems. It has two outputs and 4 inputs allowing additional featers like reheating and yield measurement.  

- Intuitive operating menu with graphic symbols and four operating buttons  
- Adjustable values  
- Integrated operating hours counter for storage tank charging  
- Start function for systems equipped with tube collectors  
- Integrated energy yield measurement    
(optional, only in conjunction with the yield measurement set)
- Solar circuit pump RPM controll or switching controll  
- Extensive functions for system monitoring that display symbols to indicate errors and faults
- Storage of all values even during a prolonged mains power supply outage  
- Various protective functions, such as system protection, collector protection, recooling and flow monitoring
- Generous wiring space
- Thermostat function (output 2).


If the collector temperature exceeds the storage tank temperature, the solar circuit pump is switched on. Monitoring and protection functions ensure safe operation.
The output A1 can be operated using an RPM control.

Multi-functional regulator:
This function is reserved for output 2 and can be allocated the following functions: Cooling and Thermostat

What is in the box:
Solar controller
1x cable 5x0,75mm² for the pump and the power supply. 200mm, installed

The device is made in Germany.


Material100% recyclable ABS housing for rail mount-
ing. Depth: 120 mm
Protection classIP41 according to DIN 40050, EN 60529
Electrical specifications 
Operating voltageAC 230 Volt, 50 Hz -10...+15%
Fuse protectionFine-wire fuse 5 x 20mm, 2A/T  
(2 amperes, delayed-action fuse) 
Max. cable cross-section 
230V connections
2.5 mm² fine-wire/single wire
Radio interference levelN according to VDE 0875
Temperature sensor /  
measuring range
PT1000, 1 kOhm at 0°C 
-30°C .. +250°C
Testing voltage 4 kV 1 min according to EN 60730/DIN, VDE
0631, IEC 60664/IEC
Output Voltage
Power - switching output
1A / approx. 230VAfor cos φ = 0,7-1,0 
Operating temperature0 ... + 50°C
Storage temperature-10 ... + 65°C
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