Solar charge controllers Steca Solsum 2525 and 4040 are newly developed products based on our internationally renowned controller family Solarix PRS. With increased module and load current, the controllers are now also suitable for even larger systems. The devices also feature an integrated USB charging port for charging smartphones and tablets. the controllers demonstrate impressive performance, are simple to use and offer unbeatable value for money.
Several LEDs in various colours give information on the battery‘s state of charge. Here, Steca’s latest algorithms are employed, resulting in optimal battery maintenance. The Steca Solsum charge controllers are equipped with an electronic fuse, thus making optimal protection possible. they operate on the serial principle, and separate the solar module from the battery in order to protect it against overcharging.
For larger projects, the charge controllers can also be equipped with special functions: e.g. with night light function and selectable charging plateau and deep-discharge protection voltages.
Product features
Serial topology with MOSFETs
Automatic detection of voltage
Voltage regulation
PWM control
Multistage charging technology
Current compensated load disconnection
Automatic load reconnection
Temperature compensation
Negative earthing of one or positive earthing of several terminals possible
Monthly equalisation charge
USB charge socket for smartphones and tablets
Electronic protection functions
Overcharge protection
Deep discharge protection
Reverse polarity protection of module (=36 V),load and battery
Automatic electronic fuse
Short circuit protection of load and module
Overvoltage protection at module input
Open circuit protection without battery
Reverse current protection at night
Overtemperature and overload protection
Load disconnection on battery overvoltage
Displays
Multifunction LED display
Multi-coloured LED
4 LEDs show operating states
for operation, state of charge, fault messages
Options
Evening or night light function pre-set in the factory or adjustable via Steca PA RC 100
Parameterisation of function values via Steca PA RC 100
Certificates
RoHS compliant
Made in EU
Developed in Germany
Manufactured according to ISO 9001 and ISO 14001
