Fronius Primo 15 Inverter | 15kW Grid-Tie | Transformerless
The Fronius Primo 15 is a high-capacity, transformerless grid-tied inverter designed for large residential and commercial solar systems. Equipped with dual MPPT inputs, it efficiently manages varying solar panel conditions to maximize energy yield. Supporting a wide MPPT voltage range of 270–800V DC and a maximum DC input voltage of 1000V, the Primo 15 can handle PV arrays up to 18,000W recommended capacity. It delivers continuous AC output power of 15,000W with a maximum efficiency of 97.8%. Featuring a variable speed fan for optimal cooling, the unit is housed in a durable NEMA 4X (IP65) rated enclosure suitable for both indoor and outdoor installations. Certified to UL 1741, IEEE 1547, and FCC Part 15 Class B, this inverter combines power, efficiency, and ruggedness for demanding solar projects.
Key Specifications
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Inverter Type – Grid-Tie, Transformerless
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Input Voltage – Max DC 1000V
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MPPT Voltage Range – 270 – 800V DC
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Maximum DC Input Current – 33.0A per MPPT
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Number of MPPTs – 2
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PV Input Capacity – Up to 18,000W
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AC Output Power – 15,000W continuous
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Output Voltage – 208/240V AC
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Output Current – 62.5A @ 240V
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Frequency – 60 Hz
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Maximum Efficiency – 97.8%
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Parallel Capability – Not applicable
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Certifications – UL 1741, IEEE 1547, FCC Part 15 Class B
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Cooling – Variable speed 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 – 79.4 lbs
