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 No. R1054 Characterisation of the operating performance: System voltage 12 V (24 V) Own consumption < 10,5 mA DC input side: Open circuit voltage solar module < 47 V Module current 40 A DC output side: Load current 40 A USB charge socket 5.2 V / 1.5 A Reconnection voltage (LVR) 12.4 V … 12.7 V (24.8 V … 25.4 V) Deep discharge protection (LVD) 11.2 V … 11.6 V (22.4 V … 23.2 V) Battery side: Battery voltage 9 V ... 17 V (17.7 V ... 34 V)) End of charge voltage 13.9 V (27.8 V) Boost charge voltage 14.4 V (28.8 V) Equalisation charge 14.7 V (29.4 V) Set battery type liquid Operating conditions: Ambient temperature -25 °C … +50 °C Fitting and construction: Terminal (fine / single wire) 16 mm² / 25 mm² - AWG 6 / 4 Degree of protection IP 30 Dimensions (X x Y x Z) 187 x 97 x 45 mm Weight 345 g
Technical data at 25 °C / 77 °F
Adjustable via Steca PA RC100: reconnection voltage, deep discharge protection, end of charge voltage, boost charge voltage, battery type
Inverters must not be connected to the load output