📝 Description

New product. The Steca Solarix Gamma is a hybrid PWM photovoltaic charge controller for battery-based autonomous systems, with 12/24 V system voltage and a maximum current of 12 A both on the photovoltaic module side and at the load output. The photographed unit is identified on the front as SOLARIX GAMMA 12 A – 12/24 V and is supplied in its original packaging.

⚙️ Technical Specifications

• Brand: Steca
• Model: Solarix Gamma
• Type: hybrid PWM photovoltaic charge controller
• System voltage: 12/24 V, automatic detection
• Maximum PV input current: 12 A
• Maximum load output current: 12 A
• Charging technology: PWM, with multi-stage regulation
• Battery management: SOC state-of-charge determination via Steca AtonIC
• End-of-charge/Float voltage: 13.7 V / 27.4 V
• Boost voltage: 14.4 V / 28.8 V
• Equalization voltage: 14.7 V / 29.4 V, disabled for GEL batteries
• Load reconnection: approx. 12.6 V / 25.2 V
• Deep-discharge protection: approx. 11.1 V / 22.2 V
• Self-consumption: approx. 5 mA
• Enclosure protection: IP22
• Ambient temperature: −25…+50 °C
• Fuse: front-mounted fuse marked FUSE MAX. 15 A
• Status indication: LED for operation, state of charge and fault indication
• Installation: Indoor, in a protected environment
• Compliance: CE / RoHS
• Production: Steca, Made in Germany

⚡ Function in the Electrical System

OFF-GRID / Stand-Alone photovoltaic system with battery.
The Solarix Gamma is installed between photovoltaic panels, battery and DC loads. It automatically regulates the energy supplied by the PV generator and controls the battery charging process, automatically adapting to 12 V or 24 V systems.
The Steca AtonIC technology determines the battery state of charge and allows charging and load disconnection to be managed according to the battery's energy status. The system also integrates a night-time lighting function, particularly suitable for autonomous applications.

🔋 Battery Management and Protections

The controller integrates several electronic protection functions:

• Battery overcharge protection
• Deep-discharge protection
• Reverse-polarity protection
• Short-circuit protection for the module and load
• Automatic electronic fuse
• Overvoltage protection on the PV input
• Night-time reverse-current protection
• Overtemperature and overload protection
• Protection in case of operation without a battery
• Temperature compensation
• Controller self-test

🏭 Construction and Installation

The Solarix Gamma is housed in a black plastic enclosure with a front six-connection terminal block for the PV module, battery and load. The front section includes LED indicators and, on the photographed unit, the fuse holder with a 15 A maximum fuse.
The IP22 protection rating makes it suitable for installation indoors and in a protected environment, not for direct exposure to atmospheric agents. The compact dimensions of approx. 188 × 106 × 49 mm allow installation in small autonomous systems.

📦 Package Contents

• 1 × Steca Solarix Gamma
• 12/24 V – 12 A charge controller
• Original packaging as shown in the photographs.
  The packaging identifies the product as Solar Charge Controller for Photovoltaic Power Systems and lists the functions PWM battery charging, LED system information display and precise SOC measurement & display.

🛡️ Safety and Product Condition

New product, in good cosmetic condition. The controller appears intact and the front marking SOLARIX GAMMA – 12/24 V – 12 A is clearly legible. The packaging shows normal storage-related signs of wear.
Before installation, the correct polarity of the connections must be verified and it must be ensured that PV current and load current do not exceed 12 A. The device must be used exclusively within the parameters specified by the manufacturer.

🚀 Final Description

The Steca Solarix Gamma is a 12 A PWM photovoltaic charge controller, designed for 12/24 V OFF-GRID systems. It integrates automatic voltage detection, state-of-charge management via Steca AtonIC, multi-stage PWM charging, temperature compensation, deep-discharge control, electronic protection functions and LED system status indication. It is a controller from the historic Solarix series, primarily intended for small and medium-sized autonomous photovoltaic systems with battery.