SOFAR 3300TL-G3 single-phase inverter, 3.3 kW, 1 MPPT, WLAN/LAN and RS485, DC disconnect switch 900.01200004-0

Efficient Energy Conversion in a Compact Enclosure

The single-phase SOFAR 3300TL-G3 inverter is designed for efficient energy management in photovoltaic installations with a capacity of up to 3.3 kW. With a maximum efficiency of 97.7% and a European efficiency of 97.2%, the inverter minimizes losses during DC to AC conversion. This high performance directly translates into greater electricity yields, which is crucial for investors counting every watt and installers ensuring optimal system operation. The device operates in transformerless mode, contributing to its lightweight design – the entire unit weighs only 6.3 kg, significantly facilitating transport and wall mounting.

Intelligent Management and Installation Safety

The interior of the device houses an advanced Maximum Power Point Tracking (MPPT) system, implemented in this model via a single tracker with a wide voltage range from 50 V to 550 V. This enables the inverter to effectively respond to changes in solar irradiance, while a start-up voltage of 70 V allows operation even under weaker light conditions. A key structural element is the built-in DC disconnector, which eliminates the need for additional external switches, simplifying the wiring diagram and enhancing service safety.

Operational safety is guaranteed by a series of built-in protective functions:

• Short-circuit and overcurrent protection – protects the circuit against mechanical and electrical damage.
• Ground Fault Circuit Interrupter (GFCI) – monitors DC circuit insulation.
• Zero Export function – allows limiting or completely disabling energy export to the public grid, which is essential in installations with power limits or energy storage systems.
• Power factor regulation – defaults to 1 but can be adjusted within a range of +/- 0.8, providing flexibility to meet grid operator requirements.

Communication with the system is achieved via a standard RS485 port and a built-in Wi-Fi module, enabling cloud connection and remote monitoring of operational parameters through a mobile app or web browser. Data can be stored locally for up to 25 years. If needed, the system can be expanded with an Ethernet or GPRS module.

Weather Resistance and Quiet Operation

The inverter enclosure is made of stainless aluminum and features an IP65 protection rating. This ensures complete resistance to dust and water jets under pressure, allowing safe installation directly on building facades or in other locations exposed to external conditions. The cooling system is based on natural convection (no fans), eliminating noise generated by the device – the sound level does not exceed 25 dB. This allows the inverter to operate unnoticed even near windows or terraces.

The device features a wide operating temperature range from -30°C to +60°C and can operate at altitudes up to 2000 m a.s.l., making it a universal solution for various climate zones in Poland and Europe. A clear LCD display combined with LED indicators provides immediate information on the system's operational status without the need to log into an application.

Summary of Key Technical Features

It is worth noting the specific parameters defining this model's capabilities: the rated AC power is 3300 W with a maximum efficiency of up to 97.7%. The device supports one MPPT tracker with a voltage range from 50 V to 550 V and a maximum input voltage also of 550 V. The IP65 protection rating ensures resistance to dust and water, while cooling is based on natural convection (passive). The device weighs only 6.3 kg, facilitating installation. Communication is realized via RS485 and a built-in Wi-Fi module (USB also available), and the manufacturer offers a warranty of up to 12 years (depending on conditions).

Thanks to its compact dimensions (321 x 260.5 x 131.5 mm) and an intuitive "Plug & Play" mounting process, the SOFAR 3300TL-G3 forms a solid foundation for modern single-phase installations, combining high performance with ease of operation and reliability confirmed by numerous international certifications (including IEC, VDE).