Steca PR 2020 PWM Charge Controller


127,05 € tax incl.

With its high quality state of charge algorithm, the Steca PR controller allows you to monitor, control and maintain your battery. It automatically detects the system voltage and, via its graphic display, displays all the data you need.

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" Solar regulator made in Germany "


The state of charge device and the latest charging technologies ensure optimum battery care and maintenance. A large screen informs the user of all service states by means of symbols, such as the state of charge is represented as a level indicator or data such as voltage, current and status Loads that can also be displayed numerically on the screen as numbers. The controller also has a power meter that the user can reset himself.

Product Features


  • Shunt topology with MOSFETs
  • Determination of the state of charge by Steca AtonIC (SOC)
  • Automatic voltage selection
  • PWM Regulation
  • Multi-level charging technology
  • Disconnection of consumers according to the SOC system
  • Automatic consumer reconnection
  • Temperature compensation
  • Possibility of negative grounding of a terminal or positive earthing of several terminals
  • Integrated data logger (energy meter)
  • Twilight functions, night lighting and aurora
  • Self test
  • Monthly equalization charge

Electronic protection functions


  • Overload protection
  • Protection against deep discharges
  • Reverse polarity protection for solar panels, consumers and the battery
  • Automatic electronic fuse
  • Protection against consumer short circuits and solar panels
  • Surge protection on solar panel input
  • Protection against open circuit without battery
  • Reverse current protection at night
  • Protection against overtemperature and overload
  • Disconnection of consumers in case of overvoltage of the battery



  • LCD graphic display
  • for service parameters, malfunction messages, self-test



  • Simple menu navigation control
  • Key programming
  • Manual interruption of the consumer



 PR 1010PR 1515PR 2020PR 3030
Characterization of the performance of operation
System voltage12 V (24 V)
Own consumption12.5 mA
DC input side
Vacuum voltage of the photovoltaic panel (at minimum operating temperature)< 47 V
Panel current10 A15 A20 A30 A
DC output side
Consumer current10 A15 A20 A30 A
Reclosing reference point (SOC / LVR)> 50 % / 12,6 V (25,2 V)
Deep discharge protection <30% (SOC / LVD)< 30 % / 11,1 V (22,2 V)
Battery side
Final charge voltage13,9 V (27,8 V)
Fast charging voltage14,4 V (28,8 V)
Equalization Charge14,7 V (29,4 V)
Setting the type of accumulatorliquid (adjustable by menu)
Working conditions
Ambient temperature-10 °C … +50 °C
Installation and construction
Termination terminal (fine / single-wire)16 mm² / 25 mm² - AWG 6 / 4
Degree of protectionIP 31
Dimensions (X x Y x Z)187 x 96 x 44 mm
Weight350 g


Output Kit voltage24V
Charge power20A
Charge power15A
Output Kit voltage12V
Charge power10A
Charge power30A