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Steca PR2020 > 20 Amp 12/24 Volt PWM Charge Controller

Steca 20 Amp 12/24 Volt PWM Charge Controller - PR2020

Our Price: $155.51
Warranty: 2 Years

Availability: Call for availability.
Product Code: STECA-PR-2020

Description Datasheet

Steca PR 20 Amp 12/24 Volt PWM Charge Controller

Manufacturer Part Number: PR-2020

The Steca PR 10-30 series of charge controllers is the highlight in the range.

The latest charging technologies, combined with a Steca-AtonIC state of charge determination which has been significantly improved once again, result in optimal battery maintenance and control of the module output of up to 900 Wp which can be connected to it. A large display informs the user about all operating modes with the aid of symbols. The state of charge is represented visually in the form of a tank display. Data such as voltage, current and state of charge can also be displayed digitally as figures on the display. In addition, the controller has an energy meter which can be reset by the user.


  • Hybrid controller
  • State of charge determination with Steca AtonIC (SOC)
  • Automatic detection of voltage
  • PWM control
  • Multistage charging technology
  • Load disconnection depending on SOC Automatic load reconnection
  • Temperature compensation
  • Common positive grounding or negative grounding on one terminal
  • Integrated data logger
  • Night light and morning light function
  • Integrated self test
  • Monthly maintenance charge


PR 1010 2020 3030
System voltage 12 V (24 V)
Own consumption 12.5 mA
Open circuit voltage solar module < 47 V
Module current 10 A 20 A 30 A
Load current 10 A 20 A 30 A
End of charge voltage liquid 13.9 V (27.8 V);
gel 14.1 V (28.2 V)
Boost charge voltage 14.4 V (28.8 V)
Equalization charge 14.7 V (29.4 V)
Reconnection voltage (SOC / LVR) > 50 % / 12.6 V (25.2 V)
Deep discharge protection (SOC / LVD) < 30 % / 11.1 V (22.2 V)
Ambient temperature -10 C +50 C
Terminal (fine / single wire) 16 mm2 / 25 mm2 - AWG 6 / 4
Degree of protection IP 32
Dimensions (X x Y x Z) 187 x 96 x 44 mm
Weight 350 g

Detailed Description

Electronic protection functions

  • Overcharge protection
  • Deep discharge protection
  • Reverse polarity protection of load, module and battery
  • Automatic electronic fuse
  • Short circuit protection of load and module
  • Overvoltage protection at module input
  • Open circuit protection without battery
  • Reverse current protection at night
  • Overtemperature and overload protection
  • Battery overvoltage shutdown


  • Graphical LCD display for operating parameters, fault messages, self test


  • Simple menu-driven operation
  • Programming by buttons
  • Manual load switch


  • Prepayment interface
  • External temperature sensor
  • Alarm contact


  • Approved by the World Bank for Nepal
  • Compliant with European Standards (CE)
  • RoHS compliant
  • Made in Germany
  • Developed in Germany
  • Manufactured according to ISO 9001 and ISO 14001

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