Item number: 1946
EAN: 4250497802816

Charge controller SS2024 12-24V 20A

Charge controller 12-24V automatic voltage recognition 20 A charge control Module power up to 480 W

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73,30 €

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Solar charge controller PWM SeaStar 20A for system voltages 12/24V


Up to 480 W module power at 24 V battery voltage.
The charge controller is connected between solar module and battery and controls the charging process in a way that ensures a fully charged battery at all times.


PWM charge controller
A hybrid control element determines the actual state of operation and based on that optimizes the charging of the battery via pulse width modulation (PWM). This leads to various advantages, e.g. very low voltage drop (max. 0.2 V) and self-consumption (max. 0.02 A).
Therefore, PWM charge controller are a lot more efficient than simple linear controllers.
The integrated microprocessor charges the battery in a gentle way and ensures a long lifetime of the solar batteries.

The LED show the state of charge of the battery and the charging current of the PV module. The integrated under voltage protection prevents from harmful discharging of the battery.
The charge controller stops the charging mode as soon as the battery is fully charged so that overcharging of the battery is not possible.  

The charge controller is compatible with solar modules of all manufacturers.
It is suitable for all lead-acid and gel batteries. The microprocessor controls the switching thresholds of the charging process in a precise and temperature-stable way.


  • ensures fully charged battery
  • splash-proof and protected against humidity
  • suitable for lead-acid, gel and AGM batteries
  • overvoltage protection
  • protection against deep discharging of the battery
  • protection against reverse currents at night
  • reverse polarity protection for battery AND PV module
  • automatic disconnect if the charging current exceeds the capacity of the controller
  • automatic disconnect in case of short-circuit
  • automatic temperature compensation (ATC)
  • LED show battery SOC
  • PWM charging
  • charge current control depending on battery SOC
  • splash-proof aluminium enclosure
  • temperature range: -35°C to +55°C

Technical Data

  • Nominal voltage: 12 / 24 V (automatic recognition)
  • Max. current: 20 A
  • PV input voltage at 12 V battery voltage: 12-18 V / at 24 V battery voltage: 24-37 V
  • Disconnect voltage (full SOC): 14 / 28 V
  • Disconnect voltage (undervoltage): 10.5 to 11.0 V / 21.0 to 22.0 V
  • Over voltage protection
  • Short-circuit protection
  • Losses if not charging: < 20 mA
  • Dimensions: 137 x 86 x 48 mm
  • Weight: 450 g
  • Connection terminals for cable diameter: 10 mm²

Mounting instructions

Betriebsanleitung download Betriebsanleitung download
German English
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