Product Description
Primo Backup Inverter is designed to deliver reliable and efficient solar energy solutions for modern households. Built on the proven Fronius GEN24 technology, the Primo Backup Inverter integrates seamlessly into private photovoltaic systems, ensuring not only energy independence but also backup functionality for critical devices. With PV Point, this advanced inverter provides basic backup power through a protected socket whenever the sun is shining, keeping essential appliances powered during outages.
The Primo Backup Inverter stands out with its intelligent energy management features, which optimize usage while supporting flexible installation and integration. Active cooling technology extends service life, making it a durable and sustainable solution for long-term solar investment. Its compatibility with both Fronius and third-party components via open interfaces ensures maximum adaptability in diverse energy setups.
For homeowners and installers seeking dependable performance, the Primo Backup Inverter combines innovation, durability, and flexibility—empowering households to take control of their clean energy future.
Technical Data
| Input Data | |
|---|---|
| Number of MPP trackers | 2 |
| Max. input current (Idc max) | 22 / 12 A |
| Max. short circuit current, module array* | 36 / 19 A |
| DC input voltage range (Udc min - Udc max) | 65 - 600 V |
| Feed-in start voltage (Udc start) | 80 V |
| Nominal input voltage (Udc,r) | 400 V |
| MPP voltage range (Umpp min - Umpp max) | 230 - 480 V |
| Usable MPP voltage range | 65 - 480 V |
| Number of DC connections | 2+2 |
| Min. MPP voltage ( U mpp min) | 230 V |
| Max. MPP voltage ( U mpp max) | 480 V |
| Max. PV generator power (Pdc max) | 9 kWpeak |
| Output Data | |
| AC nominal output (Pac,r) | 6000 W |
| Max. output power (Pac max) | 6000 VA |
| Max. grid power demand | 6000 VA |
| Max. AC output current | 27,5 A |
| Grid connection (Uac,r) | 1~ NPE 220/230 V |
| AC voltage range (Umin - Umax) | 155 - 270 V |
| Frequency (fr) | 50 / 60 Hz |
| Frequency range (fmin - fmax) | 45 - 65 Hz |
| Power factor (cos φac,r) | 0,8 - 1 ind./cap. |
| Back-up power | 1~NPE 220 V / 230 V |
| Nom. AC-Ausgangsstrom (220VAC) | 27,3 A |
| Nom. AC-Ausgangsstrom (230VAC) | 26,1 A |
| Output Data PV Point | |
| Max continuous output power | 3000 VA |
| Nom. output current (Iac max) | 13 A |
| Grid connection | 1~NPE 220 V / 230 V |
| Nominal operating frequency | 50 Hz / 60 Hz |
| Max. switchover time PV-Point | 15 s |
| Frequency in backup power mode | 53 Hz |
| General Data | |
| Width | 474 mm |
| Height | 530 mm |
| Depth | 165 mm |
| Weight | 15,38 kg |
| Weight incl. packaging | 19 kg |
| Protection class | IP66 |
| Protection class | 1 |
| Overvoltage category (DC / AC) 1) | 2 / 3 |
| Night-time consumption | < 10 W |
| Inverter design | Transformerless |
| Cooling | Active Cooling |
| Installation | Indoor and outdoor installation |
| Ambient temperature range | -40°C - +60°C |
| Permitted humidity | 0 - 100 % |
| Max. altitude 2) | 4000 m |
| AC connection technology | 3 pole AC push-in spring terminals 2.5 - 10 mm² 3 pole backup power push-in spring terminals 1.5mm² - 10mm² 2x PE-screw terminals 2.5 - 16 mm² and 3x 2,5 - 10mm² |
| Certificates and compliance with standards | IEC 62109, IEC 62909, AS/NZS 4777.2, CEI 0-21, ABNT BNR 16149 und 16150, IEC 62116, IEC 61727, G98/G994) |
| Back-up power functions | PV Point |
| Sound emissions | 42 dB(A) |
| Interference emission class | B |
| Efficiency | |
| Max. efficiency (PV - grid) | 97,6 % |
| European efficiency (ηEU) | 96.1 / 97.1 / 96.7 (230Vdc / 400Vdc / 480Vdc) |
| η at 5% Pac,r 3) | 88.4 / 92.1 / 90.2 (230Vdc / 400Vdc / 480Vdc) |
| η at 10% Pac,r 3) | 93.3 / 95.5 / 94.6 (230Vdc / 400Vdc / 480Vdc) |
| η at 20% Pac,r 3) | 95.8 / 97.0 / 96.5 (230Vdc / 400Vdc / 480Vdc) |
| η at 25% Pac,r 3) | 96.2 / 97.2 / 96.8 (230Vdc / 400Vdc / 480Vdc) |
| η at 30% Pac,r 3) | 96.5 / 97.4 / 97.0 (230Vdc / 400Vdc / 480Vdc) |
| η at 50% Pac,r 3) | 96.8 / 97.5 / 97.3 (230Vdc / 400Vdc / 480Vdc) |
| η at 75% Pac,r 3) | 96.8 / 97.5 / 97.3 (230Vdc / 400Vdc / 480Vdc) |
| η at 100% Pac,r 3) | 96.7 / 97.4 / 97.1 (230Vdc / 400Vdc / 480Vdc) |
| MPP adaptation efficiency | 99.9 |
| Protection Devices | |
| DC insulation measurement | Yes |
| Overload behaviour | Operating point shift, Power limitation |
| DC disconnector | Yes |
| DC Reverse polarity protection | Yes |
| Interfaces | |
| WLAN / 2x Ethernet LAN | Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON) |
| 6x digital in/out + 6x digital in | Interface to ripple control receiver, energy management |
| Emergency stop (WSD) | Yes |
| Datalogger and web server | Included |
| 2x RS485 | Modbus RTU SunSpec (third-party supplier) / Fronius Smart Meter, battery, Fronius Ohmpilot |
Footnotes for technical data
- According to IEC 62109-1. Option to retrofit surge protection device DC SPD type 1+2 for 2 MPP trackers available under the following item number: 4,240,313,CK
- Unrestricted voltage range.
- At Umpp min. / Udc,r / Umpp max.
- You can find the current certificates under www.fronius.com/primo-gen24-plus-cert
- Isc pv = Isc max ≥ Isc (STC) x 1,25 according to e.g.: IEC 60364-7-712, NEC 2020, AS/NZS 5033:2021.






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