Solar Controller 20A 12/24V A MPPT

Model: FSC 20033

Brand: Fsolar

Amps: 20A

Volt: 12/24V Auto

SKU: FSC 20033 Category:


◆ With the advanced dual-peak or multi-peak tracking technology, when the solar panel is shadowed or part of the panel fails to result in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.

◆ A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.

◆ A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on the I-V curve in an extremely short time.

◆ The product boasts an optimum MPPT tracking efficiency of up to 99.9%.

◆ Advanced digital power supply technologies raise the circuit’s energy conversion efficiency to as high as 98%.

◆ Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.

◆ The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is larger than the rated current, the controller will automatically lower the charging power and bring the charging current to the rated level.

◆ Instantaneous large current startup of capacitive loads is supported.

◆ Automatic recognition of battery voltage is supported.

◆ LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.

◆ Historical data storage function is available, and data can be stored for up to a year.

◆ The controller is equipped with an LCD screen with which users can not only check device operating data and statuses but also modify controller parameters.

◆ The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.

◆ The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature so as to curb the temperature rise of the controller, effectively keeping the controller from being damaged by overheat.

◆ Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery’s service life.

Additional information






12/24V Auto, 12V, 24V

Technical Parameters

Model FSC 20033 FSC 20034 FSC 20035
System voltage 12V/24V Auto
No-load loss 0.7 W to 1.2W
Battery voltage 9 to 35
Max. solar input voltage 100V (25°C), 90V (-25°C)
Max. power point voltage range Battery voltage +2V to 75V
Rated charging current 20A 30A 40A
Rated load current 20A
Max. capacitive load capacity 10000uF
Max. photovoltaic system input power 260W/ 12V

520W/ 24V

400W/ 12V

800W/ 24V

550W/ 12V

1100W/ 24V

Conversion efficiency ≤ 98%
MPPT tracking efficiency > 99%
Temperature compensation factor -3.0mv/ °C/ 2V (default)
Operating temperature -35°C to +45℃
Protection degree IP32
Weight 1.4kg 2kg 2kg
Communication method RS232
Altitude ≤ 3000m
Product dimensions 210*151*59.5mm 238*173*72.5 238*173*72.5


User Manual


There are no reviews yet.

Be the first to review “Solar Controller 20A 12/24V A MPPT”

Your email address will not be published. Required fields are marked *