Item number: 3932
EAN: 4250497805800

Charge controller PWM VS4548 BN 12-48V

Charge controller 12-48V automatic voltage recognition, 45 A charge control Module power up to 2000 W

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89,93 €

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Charging current
Solar charge controller PWM 45A for system voltages 12/24/48V


Up to 540 W module power at 12V battery voltage.
Up to 1080 W module power at 24V battery voltage.
Up to 2000 W module power at 48V battery voltage.

The ViewStar series are programmable solar charge controllers with integrated display from EPSOLAR.
All models come with an aluminium heatsink for more reliability in high-temperature environments.

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.

This charge controller is suitable for four different battery types. In the setting of battery type USER the voltages can be set and programmed individually which allows the application of Li-Ion batteries.  
The switchable load output provides the possibility to switch all connected loads ON and OFF by simple push on a button or via PV software, depending on the requirements.
Additionally, the timer function allows the configuration of a night light function as soon as the chontroller recognizes "night" via the PV module voltage.  

The remote display MT50 via RS485 connection or the adapter cable to PC enable realtime monitoring, user-specific settings and control of the charge controller. With this function, the yield data and the system parameter can be monitored and set.


  • ensures fully charged battery
  • suitable for lead-acid, gel, AGM and lithium-ion batteries
  • protection against deep discharging of the battery
  • protection against reverse currents at night
  • reverse polarity protection for battery AND PV module
  • optional connection of external temperature sensor possible
  • RS485 interface with Modbus protocol
  • automatic disconnect if the charging current exceeds the capacity of the controller
  • automatic temperature compensation (ATC)
  • adjustable timer function (1-15 h) 
  • option for night light function
  • LCD display with 4 button menu
  • PWM charging
  • charge current control depending on battery SOC
  • with an optional CR1220 button cell battery the charge controller stores yield data even if disconnected from the power source
  • Suitable for Li-Ion batteries


  • Solar light systems
  • Solar home systems
  • Solar monitoring
  • Caravan and boats
  • Solar traffic signals
  • Solar power plant

Technical Data

  • Nominal voltage: 12 / 24 /48 V (automatic recognition)
  • Max. charging current: 45 A
  • Max. battery voltage: 64 V
  • typical self-consumption: 18 mA
  • Overvoltage protection
  • Short-circuit protection
  • Losses if not charging: < 20 mA
  • Voltage drop: < 240 mV
  • Weight: 1200 g
  • Connection terminals for cable diameter: 35 mm²

Mounting instructions

Betriebsanleitung download Betriebsanleitung download Monitoringsoftware download
German English Monitoring software
Grounding: Negative
System voltage: 12/24/36/48V
Controllertype: PWM
Voltage range: Open-circuit voltage up to 96V
Rated Current: 45A
Shipping weight: 3,00 Kg

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