Fronius Symo 15.0 – 208V | Grid-Tie 3-Phase Transformerless Inverter
The Fronius Symo 15.0 – 208V is a high-capacity, transformerless 3-phase inverter designed for large-scale commercial and industrial solar applications. It supports a maximum DC voltage of 1000V and features dual MPPT inputs with a voltage range of 200–800V DC, handling up to 33A max DC current per MPPT. Optimized for PV arrays up to 19,500W capacity, this inverter delivers a continuous AC output of 15,000W (15kVA) at 208V 3-phase with a current of 41.6A at 60 Hz. Achieving a maximum efficiency of 97.0% and a CEC efficiency of 96.5%, it supports parallel operation for scalable system expansion. The Symo 15.0 comes with integrated Wi-Fi and Ethernet monitoring via Solar.web, providing detailed performance insights. Smart fan cooling ensures optimal temperature management, while the rugged NEMA 4X (IP65) enclosure offers superior protection against weather elements.
Key Specifications
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Inverter Type – Grid-Tie, Transformerless (3-Phase)
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Max DC Voltage – 1000V
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MPPT Voltage Range – 200–800V DC
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Max DC Current – 33A (16.5A per MPPT)
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Number of MPPTs – 2
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PV Capacity – Up to 19.5kW recommended
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AC Output Power – 15,000W continuous (15 kVA)
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Output Voltage – 208V 3-Phase
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Output Current – 41.6A
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Frequency – 60 Hz
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Maximum Efficiency – 97.0%
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CEC Efficiency – 96.5%
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Parallel Capability – Yes
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Monitoring – Wi-Fi, Ethernet, Solar.web platform
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Certifications – UL 1741, IEEE 1547, FCC, CSA
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Cooling – Smart fan
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Enclosure Rating – NEMA 4X (IP65)
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Dimensions (H x W x D) – 28.5 x 20.1 x 8.9 inches
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Weight – 77.1 lbs (35 kg)
