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Steca 12v 24v 30 Amp PR Series Solar Charge Controller

Was: $273.80
Sale Price: $219.95
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Product InformationStore Part Number: PR-3030


The Steca PR 3030 uses the latest charging technologies combined with state of charge determination that enable optimal battery maintenance and module power monitoring.The Steca PR charge controllers were launched in the year 2004 as the fifth generation of charge controller technology.

The Steca PR Series controllers use a LCD display which shows the accurate state of charge in percent and as battery gauge symbol. The heart of the controller is the integrated circuit called ATONIC®II, which contains the improved regulation software based on a self learning algorithm. This allows the solar charge controller to learn on the fly, and adjust according to the input garnered from the batteries during operation.


  • PWM shunt battery charging
  • State of charge (SOC) battery regulation
  • Built in Ah counter
  • Boost charging
  • Equalising charge
  • Float charging
  • Automatic load reconnection
  • Manual load switch
  • Automatic selection of voltage (12V / 24V)
  • Temperature compensation
  • Positive grounding
  • (or) negative grounding on one terminal
  • Field adjustable parameters by two buttons
  • Lighting control options during nighttime
  • Interface to prepayment unit


This charging regulator has basic functions for specifying the charging state(SOC), charging specification and deep discharge protection that are futher described in the owners manual. Additional functions that can be activated in the settings are night light function, auto-test, presetting and serial number query are also explained in the manual available for download. During operation, the regulator monitors various parameters (U; I) of the battery and from that calculates the battery’s charge level (SOC = state of charge). The charge level is the energy level still available in the battery. Modifications in the system, e.g. the battery’s aging process are automatically taken into consideration by the system’s continuous learning process.

Tech Specs

  • Dimensions (LxWxH): 7.36 x 3.78 x 4.4 in
  • Weight: 0.8 lb
  • Shipping Weight: 2 lb
  • Nominal Voltage: 12/24 V (Automatic Detection)
  • Battery Voltage Detection: 6.9 V-17.2 V: Detects as 12 V Battery & 17.3 V-43 V: Detects as 24 V Battery
  • Minimum Battery Voltage To Operate: 6.9 V
  • Battery Type: Lead Acid (Flooded/AGM/GEL)
  • Max Open Circuit Voltage: < 47 V
  • Max Short Circuit Current At 25° C: 30 A
  • Controller Type: Shunt, PWM
  • PWM Frequency: 30 Hz
  • Self Consumption: 12.5 mA
  • Display: Graphical LCD Display for Operating Parameters, Fault Messaging & Self Test
  • Model: PR3030
  • Manufacturer: Samlex
  • Temperature Compensation: -4 mV per K and cell (internal sensor)
  • Grounding: Common Positive Grounding. Negative Grounding only on Battery Negative
  • Final Charging Voltages: Boost: 14.4 V (28.8 V)
  • Final Charging Voltages: Equalization(For 2 Hours): Liquid Electrolyte: 13.9 V (27.8 V) / Gel Cell: 14.1 V (28.2 V)
  • Final Charging Voltages: 30 Day Maintenance (2 Hours): Liquid Electrolyte: 14.7 V (29.4 V) / Gel Cell: 14.4 V (28.8 V)
  • Max Load Current at 25° C: 30 A
  • Low Voltage Disconnect: SOC Mode: < 30% / Voltage Control Mode: 11.1 V / 22.2 V
  • Low Voltage Reconnect: SOC Mode: > 30% / Voltage Control Mode: 12.5 V / 25.0 V
  • Protections: Electronic Protections with Automatic Reset and Electronic Fuse: Reverse Polarity of Solar Array / Load / Battery Connections, Short Circuit at Solar Array Input / Load Output, Over Charge, Over Load, Over Input Voltage and Over Temperature, Deep Discharge / Under Voltage,Reverse Current Flow from Battery to Solar Array at Night, Excessive Solar Array Current, Open Circuit (Battery is Not Connected)
  • Max Wire Size For Terminals: (16 mm² / 25 mm²) or (AWG #6 / AWG #4)
  • CE Marked: EMC Directive 2004/108/EC European Standards: EN60730-1, EN60730-2-11, EN55014-1, EN55022
  • Operating Ambient Temperature: -10° C to 50° C / 14° F to 122° F
  • Ingress Protection Class: IP32
  • Manufacturer Part #: PR-3030
  • UPC: 4250852801041
  • Made In: Germany

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