The Steca Solsum generation is one of the most successful and widely used charge controllers in solar home systems. With load currents up to 10 A and automatic 12 V or 24 V detection, it is ideal for systems up to 240 W.
The printed circuit board is fully electronically protected, and the LED display makes the battery state easy to read. Terminals make it easy to connect solar panels, battery and load. The Steca Solsum F works as an energy-efficient PWM-based series controller.

Features
Product features
- Series topology with MOSFETs
- Automatic voltage detection
- Voltage regulation
- PWM control
- Multi-stage charging technology
- Current-compensated load disconnect
- Automatic load reconnection
- Temperature compensation
- Single-terminal negative earthing or multi-terminal positive earthing possible
- Monthly equalisation charge
Electronic protection functions
- Overcharge protection
- Deep discharge protection
- Reverse polarity protection of module (≤36 V), load and battery
- Automatic electronic fuse
- Load and module short-circuit protection
- Overvoltage protection at module input
- Open-circuit protection without battery
- Reverse current protection at night
- Overtemperature and overload protection
- Load disconnect on battery overvoltage
Displays
- Multifunction LED display
- Multicolour LED
- 4 LEDs show operating states
- for operation, state of charge and fault messages
Options
- Evening or night light function preset at the factory or adjustable via Steca PA RC 100
- Parameterisation of function values via Steca PA RC 100
Certificates
- Compliant with European standards (CE)
- RoHS compliant
- Made in the EU
- Manufactured according to ISO 9001 and ISO 14001
Accessories
- Steca PA RC100





