The Fronius Primo is a high-performance, single-phase, transformerless inverter designed for residential and light commercial solar installations. Available in power classes from 3.0 to 8.2 kW, it forms a perfect part of the SnapINverter lineup. Its innovative SuperFlex Design allows maximum flexibility in system layout, while the SnapINverter mounting system ensures fast installation and simple, hassle-free maintenance.
Every Fronius Primo comes with a full integrated communication package, including WLAN, energy management, web server access, and multiple open interfaces — making it one of the most advanced and “communicative” inverters for homeowners.
Efficiency for Both Residential and Commercial Use
The Fronius Primo operates efficiently at up to 600 V input voltage for residential applications, in line with ESA requirements. For commercial systems, it can run at up to 1,000 V, offering higher efficiency and lower balance-of-system costs.
Industry-leading features such as dual MPP trackers, arc fault protection, integrated wireless monitoring, and SunSpec Modbus compatibility come standard — ensuring seamless data logging and monitoring through Fronius Solar.web.
SnapINverter Technology
SnapINverter technology features a standardised, snap-in mounting system that makes installation and servicing exceptionally simple. The lightweight connection area is mounted first, followed by the power stage set, which clicks into place using a secure hinge mechanism. For servicing, only the power stage needs to be removed — all cabling remains untouched.
Automatic HF Transformer Switchover
Fronius HF transformer inverters use automatic transformer switchover, creating three efficiency peaks for consistently high performance across the full input voltage range. This results in higher energy yields, improved safety through electrical isolation, and a compact, lightweight design.
Integrated Data Communication
Fronius leads the industry with built-in data communication — no additional hardware required.
Standard features include:
These open interfaces can run in parallel with Solar.web, enabling easy integration with third-party systems and giving you full visibility of system performance.
SuperFlex Design
Fronius SuperFlex Design combines two MPP trackers with high system voltage and a wide DC input range. Every input can handle the inverter’s full nominal power, making it ideal for:
One inverter model can accommodate nearly any system configuration.
Dynamic Peak Manager
The Dynamic Peak Manager is an advanced MPP tracking algorithm that continuously scans the entire characteristic curve. It identifies the global maximum power point (GMPP) even under partial shading, ensuring higher energy harvest.
Smart Grid Ready
Fronius inverters include built-in Advanced Grid Features to meet future grid requirements. These include intelligent control of reactive and active power, support for stable grid operation in high-PV areas, and dynamic feed-in control with self-consumption management.
Zero Feed-In Capability
For regions where grid operators limit or prohibit PV feed-in, the Fronius Primo supports dynamic power reduction and true zero feed-in. The inverter prioritises on-site consumption and adjusts output to comply with the allowed export limit. Zero feed-in can be activated easily through the inverter’s web interface.
Dimensions:
645 X 431 X 204mm
21kG
| Rated output power | 8200W |
| Peak output Power | 8200W |
| Output type | Pure sinewave |
| Number of MPPTs | 2 |
| Max open circuit voltage | 1000V |
| MPPT range | 240 - 800 V |
| MPPT Startup voltage | 80V |
| Maximum DC amps | 18A |
| Maximum PV power | 12300W |
| Phases | 1 Phase |
| Max efficiency | 98.1% |
| Weather protection | IP65 |
| Warranty | 5 years |
