Fronius Symo 15.0-3-M (Extended) 15kW Solar Power Inverter

Fronius Symo 15.0-3-M (Extended) 15kW Solar Power Inverter

  • 3 phase (Fronius Symo 15.0-3-M)
  • 15 kW
  • 2 MPPT
  • Warranty: 5 years (optional up to 20)
  • The Fronius Symo M 15kW Solar Power Inverter includes display and Datamanager
  • Please note the country-specific service & Warranty conditions of the manufacturer
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The Fronius Symo 15.0-3-M (Extended) 15kW Solar Power Inverter was designed for the maximum flexibility for the applications of tomorrow. With power categories ranging from 3.0 to 20.0 kW, the transformerless Fronius Symo M is the three-phase inverter for systems of every size. The inverters also support a Modbus interface for third-party monitoring and data-logging. The Solar.Web monitoring portal can also utilize the free Fronius Solar.TV service, to transmit monitoring data to a public display, which includes system yield, energy production, and environmental benefits.

Buy Fronius Symo 15kW Solar Power Inverter

The high system voltage, wide input voltage range and two MPP trackers ensure maximum flexibility in system design. The standard interface to the internet via WLAN or Ethernet and the ease of integration of third-party components make the Fronius Symo one of the most communicative inverters on the market.

The Fronius Symo 15.0-3-M is the purpose built three phase SnapINverter range. It was also one of the debut SnapINverter models. With a strong demand for three phase inverter technology and being one of the first SnapINverter products in the market, the Fronius Symo 15.0-3-M has been selected in most of our three phase systems. Like all the SnapINverters, high efficiencies come as standard, with the Symo boasting a maximum efficiency of 98.1%. Couple this with leading algorithms in the MPPT, which can only be developed from years of experience in the field, you get an inverter that extracts more kWh per kW than almost any other inverter on the market.

The Dynamic Peak Manager also enables the inverter to generate more output with shaded systems than traditional string inverters. The reliability of the unit is surpassed by few in the field, making them an ideal choice in remote and fringe of grid areas where reliability is vital.

The main features of the Fronius Symo 15.0-3-M solar inverter

  • SnapINverter Technology
  • Integrated data communication
  • Smart Grid Ready
  • Dynamic Peak Manager
  • Zero feed-in

The Fronius Symo 15.0-3-M is more than an inverter

The SnapINverter generation has changed the way we interact with our inverters. With on-board Wi-Fi (or with the included LAN port), customers can easily connect the Symo 15.0-3-M to their network at home. The open communication protocol and energy management function enables you to integrate easily to components from third party suppliers and optimise the self consumption of power. Finally, customers can prepare for solar battery storage by incorporating a Fronius Smart Meter into their system. This device show you not only how much power you’re producing, but how much you’re using in the house – even in real-time.

With the Fronius Smart Meter installed, you can switch on any device and watch your consumption change instantly. You can also view reports on how much power you’ve used, exported and imported from the grid. This is vital information for those considering batteries down the track. The new Fronius SnapINverter generation makes all this possible, and it’s taking solar inverters to a whole new level.

If you need a premium three phase inverter for your solar panel system project, the Fronius Symo 15.0-3-M is as proven, robust and as feature packed as they come. With amazingly high efficiency and a vast array of features, the Symo is a great selection for your home.

Fronius solar inverters Logo
The history of Fronius begins in 1945. The company is now represented by subsidiaries in 28 countries and by sales partners and representatives in over 60 countries, and is a recognised innovation and technology leader. Since 2011, Fronius has been led by the granddaughter of the company founder, Elisabeth Engelbrechtsmüller-Strauß. However, the company´s goal remains the same as ever: to create a sustainable future through innovation, quality and a first-rate service. The best power inverters from NASDAQ, Bloomberg and Fortune 500 listed solar energy component manufacturers at best price; suitable for all weather conditions. 

Related links to the Fronius Symo 15W Solar Inverter :

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Questions? Contact one of our expert solar reps. We can answer technical questions and help you choose the right parts for your solar system.

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Fronius Inverters are recognised as providing high performance but are also noisy. As long as the inverter is positioned away from living areas this may not be a problem. If you are looking for a high end solar power system then Fronius will be one of the brands you are looking at.

All of Fronius’ inverters are manufactured in Austria and come with CE and UL certification.

Fronius inverters use a fan for active cooling. The stronger the sun, the louder they get. They are silent when the sun is not out. If you want an inverter that does not have a fan for cooling – consider an SMA or Huawei.

Fronius International model range is shipped out of Cardiff or London, United Kingdom or Frankfurt, Germany, while the US models of Symo, Primo and Eco are shipped out of either our warehouse in California or New Jersey.

Fronius is highly regarded in the solar world and generally considered the world’s leading string solar inverter manufacturer. This reputation is not based on sales volume, but service, quality and most importantly reliability. … All Fronius solar inverters are engineered, designed and manufactured in Austria

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Why Choose Wind and Sun Energy? Why Go Solar With Us?

0Bills DIY Store is a leading online solar and wind energy supply store serving European and American homeowners and businesses. We design and supply quality Solar Power Kits and System Packages both ready assembled and custom tailored for your needs. Our retail and wholesale pricing reflects the relationships we carry with the manufacturers we stock, ensuring the best deals for our customers.

We carry everything you need for your grid tied or off-grid system. Our Solar PanelsInvertersSolar Accessories and Mounting are second to none in quality, reliability, efficiency and lifespan. When going solar with us, we help you every step of the way in sourcing the products that matter for your investment.

Let us design and supply your solar panel system for less using the best products in the solar industry. We are proud to be a preferred distributor for solar installers, SMEs, Governments, leading universities and DIY homeowners.

Shop confidently with us and receive expert technical help from start to finish. Watch your investment produce free renewable energy for years to come!

Additional information

Weight 43.4 kg
Dimensions 72.5 × 22.4 × 51 cm
Product Category

Inverters, on-grid inverters, SOLAR PHOTOVOLTAIC (PV)



Rated Power (W/kW)

15 kW

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Fronius Symo 15.0-3-M 15kW Solar Inverter

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Technical Data

INPUT DATA Fronius Symo 15.0-3-M
Max. input current
(Idc max1 / Idc max2)
33.0 A / 27.0 A
Max. usable input current total
(Idc max1 + Idc max2)
51.0 A
Max.array short circuit current (MPP1/ MPP2) 49.5 A / 40.5 A
Min. input voltage (Udc min) 200 V
Feed-in start voltage (Udc start) 200 V
Nominal input voltage (Udc,r) 600 V
Max. input voltage
(Udc max)
1,000 V
MPP voltage range
(Umpp min – Umpp max)
320 – 800 V
Number of MPP trackers 2
Number of DC connections 3 + 3
Max. PV generator output (Pdc max) 22.5 kWpeak
AC nominal output (Pac,r) 15,000 W
Max. output power 15,000 VA
AC output current (Iac nom) 21.7 A
Grid connection (voltage range) 3~NPE 400 V / 230 V or 3~NPE 380 V / 220 V (+20 % / -30 %)
Frequency (frequency range) 50 Hz / 60 Hz (45 – 65 Hz)
Total harmonic distortion 1.5 %
Power factor (cos φac,r) 0 – 1 ind. / cap.
(height x width x depth)
725 x 510 x 225 mm
Weight 43.4 kg
Degree of protection IP 66
Protection class 1
Overvoltage category (DC / AC)1) 1 + 2 / 3
Night time consumption < 1 W
Inverter design Transformerless
Cooling Regulated air cooling
Installation Indoor and outdoor installation
Ambient temperature range -40°C to +60°C
Permitted humidity 0 % to 100 %
Max. altitude 2,000 m / 3,400 m (unrestricted / restricted voltage range)
DC connection technology 6x DC+ and 6x DC- screw terminals 2.5 mm² – 16 mm²
AC connection technology 5-pin AC screw terminals 2.5 mm² – 16 mm²
Certificates and compliance with standards ÖVE / ÖNORM E 8001-4-712, DIN V VDE 0126-1-1/A1, VDE AR N 4105, IEC 62109-1/-2, IEC 62116, IEC 61727, AS 3100, AS 4777-2, AS 4777-3, CER 06-190, G83/2, UNE 206007-1, SI 4777, CEI 0-16, CEI 0-21, NRS 097
Max. efficiency 98.1 %
European efficiency (ηEU) 97.8 %
η at 5 % Pac,r2)  91.2 / 94.8 / 92.3 %
η at 10 % Pac,r2) 93.4 / 96.0 / 94.4 %
η at 20 % Pac,r2) 95.9 / 97.4 / 96.7 %
η at 25 % Pac,r2) 96.2 / 97.6 / 97.0 %
η at 30 % Pac,r2) 96.5 / 97.8 / 97.3 %
η at 50 % Pac,r2) 96.9 / 98.1 / 97.7 %
η at 75 % Pac,r2) 97.0 / 98.1 / 97.8 %
η at 100 % Pac,r2) 97.0 / 98.1 / 97.7 %
MPP adaption efficiency > 99.9 %
DC insulation measurement Yes
Overload behaviour Operating point shift, power limitation
DC disconnector Yes
Reverse polarity protection Yes
WLAN / Ethernet LAN Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON)
6 inputs and 4 digital in/out Interface to ripple control receiver
USB (type A socket)3) Datalogging, iverter update via USB flash drive
2 x RS422 (RJ45 socket)3) Fronius Solar Net, Interface protocol
Signalling Output3) Energy management (floating relay output)
Datalogger and Webserver Included
External Input3) S0 meter connection / Evaluation of overvoltage protection
RS485 Modbus RTU SunSpec or meter connection
fronius logo 300x300
The history of the Austrian Fronius begins in 1945. At that time, charging car batteries was not something that could be taken for granted. Günter Fronius was unwilling to accept this. In 1950, Günter Fronius expanded his product portfolio to include welding transformers. Driving forward their growth and internationalisation strategy saw the establishment of subsidiaries around the world. In 1992, the decision was taken to focus on the “future field” of solar energy, which is why the company today is split into three strong divisions: Perfect Welding, Solar Energy and Perfect Charging. The best solar pv inverters from the solar energy brands at the best retail prices on by Solaranna.