Fronius Symo 4.5-3 S Light ongrid inverter 4,5 kW - 3 fázis (RS485)

Payment and delivery

Payment
You can pay for your order by bank transfer, in HUF or EUR. We will send you a payment request by email, which includes the necessary data for the transfer. If you would like a unique payment method (for example, cash or cash on delivery), select the “Unique payment plan” option and our colleagues will contact you to discuss the details.

Transport
The shipping fee depends on the size and type of the ordered product. For smaller packages, the home delivery fee is 3,790 HUF, for larger products it is 6,490 HUF. For solar panels, batteries and other large products, the delivery is based on an individual price quote, which our staff will always discuss with you after placing the order.

Product description

The Fronius Symo series is available in a power range from 3.0 to 8.2 kW, making it ideal for smaller family homes and medium-sized solar systems. Thanks to its three-phase design, it ensures a stable and safe power supply, even with uneven consumption.

The series is available in different versions:

Light version (RS485 communication): with basic data transmission, cost-effective solution where online monitoring is not required.
Wlan version (LAN/WLAN): with built-in data logger and internet connection, enabling online monitoring of the system on the Fronius Solar.web platform.

There is another difference between the S and M type markings on the devices:

Type S (3.0–4.5 kW, 1 MPP tracker): for simpler systems where all solar panels are in the same orientation.
Type M (3.0–8.2 kW, 2 MPP trackers): for more flexible design, in case of strings with different orientations or shaded areas.

All versions feature SuperFlex Design, which enables flexible system design, and Dynamic Peak Manager, which automatically optimizes production even in shaded conditions. Efficiency of up to 98% and IP65 protection guarantee economical and reliable operation in the long term.

Power range 3.0–8.2 kW
Three-phase design for stable power supply
Light (RS485) and Wlan (LAN/WLAN) versions
Type S: 1 MPP tracker, for simple systems
Type M: 2 MPP trackers, for flexible planning
SuperFlex Design and Dynamic Peak Manager technology
IP65 protection, active cooling, suitable for outdoor installation

The Fronius Symo series thus offers a wide range of options: the Light models provide cheaper, basic communication, while the Wlan models come with full online monitoring. The S type is for simpler roof structures, while the M type is ideal for more complex, multi-orientation or partially shaded systems.

Fronius Symo 4.5-3 S Light ongrid inverter 4.5 kW - 3 phase (RS485)

Name: Fronius Symo 4.5-3 S Light ongrid inverter 4.5 kW - 3 phase (RS485)
Brand: Fronius
SKU: FRO-SYMO-4.5-3SL
Price: 473614.00 HUF
Availability: InStock

Vendor: Fronius

Type: Inverter

SKU: FRO-SYMO-4.5-3SL

473.614 Ft

Tax included.

Available in stock

Warranty: 5 years

Payment and delivery

Product description

The series is available in different versions:

Light version (RS485 communication): with basic data transmission, cost-effective solution where online monitoring is not required.
Wlan version (LAN/WLAN): with built-in data logger and internet connection, enabling online monitoring of the system on the Fronius Solar.web platform.

There is another difference between the S and M type markings on the devices:

Type S (3.0–4.5 kW, 1 MPP tracker): for simpler systems where all solar panels are in the same orientation.
Type M (3.0–8.2 kW, 2 MPP trackers): for more flexible design, in case of strings with different orientations or shaded areas.

Power range 3.0–8.2 kW
Three-phase design for stable power supply
Light (RS485) and Wlan (LAN/WLAN) versions
Type S: 1 MPP tracker, for simple systems
Type M: 2 MPP trackers, for flexible planning
SuperFlex Design and Dynamic Peak Manager technology
IP65 protection, active cooling, suitable for outdoor installation

Fronius Symo 4.5-3 S Light ongrid inverter 4.5 kW - 3 phase (RS485)

473.614 Ft

Teljesítmény	4.5 kW
Típus	On-grid inverter
Akkumulátor-kompatibilitás	Not
MPPT-k száma	1
Max. hatásfok	0.98
Garancia	5 years
Max. PV feszültség	1000V
Kommunikáció	RS485
MPP tartomány	150-800V
DC/AC túlméretezési arány	2
EPS / Backup kimenet	Not
DC kapcsoló	Yes
IP védelem	IP65
Méret	645 × 431 × 204mm
Tömeg	16 kg

Do you have a question?

View the most frequently asked questions or contact us.

How do I choose the right inverter?

When choosing an inverter, it is worth considering the power of the solar panels, their voltage range, the number of phases in the system (single- or three-phase), and whether you plan to expand with batteries in the future.

In the case of three-phase systems, a distinction must be made between symmetrical and asymmetrical inverters. The symmetrical type distributes the power equally across all three phases, which is an advantageous solution for simpler networks. The asymmetrical inverter, on the other hand, can regulate the power differently per phase, thus adapting more flexibly to the real consumption pattern of the house - for this reason it is usually the more practical and efficient choice for domestic systems.

When is it worth choosing a hybrid inverter?

It is worth choosing a hybrid inverter if you want to expand the system with battery energy storage in the future or if you want to provide the house with protection against power outages.

Hybrid models are more expensive, but offer a more flexible solution in the long term, as they can be easily integrated into the existing system later.

What happens in the event of a power outage?

During a power outage, traditional grid-fed inverters automatically shut down to prevent power from being fed back into the utility grid for safety reasons.

Hybrid inverters, on the other hand, can operate in stand-alone, so-called backup mode, if a battery is also connected to the system. In this case, the inverter disconnects itself from the grid and uses the energy stored in the battery to continue supplying designated consumers in the house, such as lighting, a refrigerator or a router. As soon as the grid voltage returns, the inverter automatically returns to normal operation and begins recharging the battery.

What warranty does the inverter have?

The warranty is typically 5-10 years, depending on the manufacturer and model. Some manufacturers also offer extended warranties with registration. The exact duration is listed on each product page, so it's worth checking before purchasing.

What happens if the inverter fails?

As a first step, it is always recommended to diagnose the fault, because often the problem is not related to the inverter, but to the settings or the communication module.
If there is an actual failure, the distributor or manufacturer's service partner will assist with the repair or replacement process, within or beyond warranty.