Steca TR 0301sc+

3 inputs, 1 output


The Steca TR 0301sc+ controller is the speed-controlled version of the basic Steca TR 0301 controller.

In addition to speed control of the solar circuit pump, the Steca TR 0301sc+ also offers the option of recording the operating hours of the solar circuit pump and the minimum and maximum value storage of the collector and storage tank temperatures.

The controller monitors and controls solar thermal systems with one collector array and one storage tank. The Steca TR 0301sc+ visualises both the operating status and the complete solar circuit of a solar system via a graphically animated and clear display. The consistent use of pictograms facilitates the easy operation of the controller. The controller also takes over important system monitoring and safety functions, ensuring the continuous and safe operation of the entire system. The numerous additional functions of the Steca TR 0301sc+ the maximum storage tank temperature, a tube collector function, a frost protection function, a holiday or re-cooling function and the option of selecting the temperature display in degrees Celsius (°C) or Fahrenheit (°F). The operational safety of the system is supported by sophisticated fault diagnostics. The multicoloured LCD backlighting ensures that any faults that have occurred can be found quickly and reliably, helping to quickly rectify any faults.

Steca TR0301 sc  technische Zeichnung


Product features

  • Compact, multipart designer casing
  • Electronic speed control
  • Maximum storage tank temperature
  • High level of operational safety through fault diagnosis
  • Logging of minimum and maximum temperature values
  • Temperature display °C / °F
  • Collector overtemperature disconnection
  • Hours-of-operation logger
  • Storage tank target temperature loading
  • Spring clamp terminals allow rapid and easy installation


  • Graphical LC display with backlighting
  • Animated representation of the systems and operating states


  • Non-verbal menu navigation
  • Side switch for manual, auto, off


  • Holiday (storage tank recooling)
  • Interval / tube collector
  • Anti-freeze
  • Display storage tank top


  •  Steca TR 0301sc+ certificate CE · pdf · 0.757 MB
  •  Steca TR 0301sc+ productdatasheet DE · pdf · 0,938 MB
  •  Steca TR 0301sc+ productdatasheet EN · pdf · 0.937 MB
  •  Steca TR 0301sc+ product pic drawing · jpg, 300 DPI, high quality · 0.441 MB
  •  Steca TR 0301sc+ product pic drawing · jpg, 72 DPI, web quality · 0.234 MB

Technical data

 TR 0301 sc+
System voltage
230 V AC (± 15 %), 50 Hz
System voltage optional
115 V AC (± 15 %), 60 Hz
1.07 W
Temperature control class
Energy efficiency
1 %
Number of inputs
3 x temperature (Pt1000)
Number of outputs
1 x triac for speed control (R1), max. 250 W (230 V)
Turn-on temperature difference
8 K
Turn-off temperature difference
4 K
Ambient temperature
0 °C … +45 °C
Degree of protection
IP 20 / DIN 40050
Dimensions (X x Y x Z)
134 x 137 x 38 mm [0.00 x 0.00 x 0.00 inch]
250 g [0.00 oz]
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