Solar controller Steca Tarom PWM 4545


338,80 € tax incl.


New version of Steca Tarom! This controller allows you to program your photovoltaic system in the smallest detail and to save your data thanks to its production history and energy meter. Equipped with an efficient algorithm, it optimally manages installations up to 2700Wp.

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" Solar regulator made in Germany "


The new version of the Steca Tarom sets new standards in this power class. A graphical display informs the user of all the important information of the installation, and allows the configuration and adjustment of the regulator to the specific requirements of each installation.

Its many useful features allow the user to adapt the controller to the specific data of his system.

The considerable improvement of the state of charge determining device allows an optimal regulation of the system and the protection of the batteries. The Steca Tarom charge controller is the reference for larger systems with three voltage levels (12 V, 24 V, 48 V).

The integrated data logger stores all the important information of the installation. With the Steca UART open interface, you can access controller data in real time. An external temperature sensor can be optionally installed. Two additional switching contacts can be freely configured as a timer and can be used to manage various functions such as night lighting, generator start-up, or surplus management. A total of six devices can be connected in parallel and communicate via the StecaLink bus.

Product Features


  • Shunt topology with MOSFETs
  • MicroSD card slot for the data logger of all minute values
  • Determination of the state of charge (SOC)
  • Automatic voltage selection
  • Temperature compensation
  • Multi-level charging technology
  • Disconnection of consumers according to the SOC system
  • Automatic consumer reconnection
  • PWM Regulation
  • Possibility of negative grounding of a terminal or positive earthing of several terminals
  • Real time clock (date, time)
  • Innovative advanced data logger with energy meter
  • MicroSD card slot for the data logger of all minute values
  • Twilight functions, night lighting and aurora
  • Four freely programmable timers with day of the week display function
  • Self test
  • Two configurable auxiliary contacts
  • Adjustable end of charge voltages
  • Monthly equalization charge

Electronic protection functions


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



Characterization of the performance of operation
System voltage12 V (24 V)12 / 24 / 48 V
Own consumption30 mA
DC input side
Vacuum voltage of the photovoltaic panel (at the minimum operating temperature)< 60 V< 100 V
Panel Current45 A
Panel Current
Consumer current45 A
Reclosing reference point (SOC / LVR)> 50 % / 12,5 V (25 V)> 50 % / 50 V
Deep discharge protection <30% (SOC / LVD)< 30 % / 11,7 V (23,4 V)< 30 % / 46,8 V
Battery side
Final charging voltage14,1 V (28,2 V)56,4 V
Fast charging voltage14,4 V (28,8 V)57,6 V
Equalization load15 V (30 V)60 V
Setting the type of accumulatorliquid (adjustable by the menu)
Working conditions
Ambient temperature-10 °C … +60 °C
Installation and construction
Termination terminal (fine / single-wire)25 mm² / 35 mm² - AWG 4 / 2
Degree of protectionIP 31
Dimensions (X x Y x Z)218 x 134 x 65 mm
Weight800 g