Fronius | 3.8kW Primo Gen24 Inverter, 240 VAC, 1-Phase, 200 - 480 VDC MPPT
Fronius | 3.8kW Primo Gen24 Inverter, 240 VAC, 1-Phase, 200 - 480 VDC MPPT is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
We offer fast and reliable shipping across the continental U.S., with free shipping available on most orders (exclusions may apply based on brand and product type). Orders are typically processed within 1–2 business days and transit time is usually 4–7 business days. Larger items may ship via freight and require a scheduled curbside delivery. Please ensure your contact details are accurate at checkout. For questions about delivery timelines, shipping eligibility, or special requests, feel free to contact us directly. See Policy.
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The Fronius Primo GEN24 inverter is a standout solution for residential solar installations, combining intelligent technology, powerful software, and thoughtful engineering to maximize energy output. Its built-in backup power socket allows selected household devices to operate during daylight hours even without a connected battery, adding an extra layer of resilience. Designed to support energy self-sufficiency and affordable sustainability, it serves as a strong foundation for today’s home solar systems. Features such as advanced shade optimization, battery-free backup capability, and adaptable system configurations make it highly versatile. Active cooling helps ensure reliable long-term operation, while the transformer-free construction enhances efficiency and dependability. For homeowners seeking a high-quality, future-ready solar inverter, the Primo GEN24 is an excellent choice.
| Number of MPP trackers | 2 |
| PV input power | 3940 W |
| Feed-in start voltage (Udc start) | 80 V |
| Min. MPP voltage (U mpp min) | 200 V |
| Max. MPP voltage (U mpp max) | 480 V |
| Max. switchover time PV-Point | 17 s |
| Max. switchover time Full Backup | 17 s |
| Mains Frequency | 60 1/s, 50 1/s |
| Width | 18.67 in |
| Height | 20.39 in |
| Depth | 6.5 in |
| Weight | 33.29 lbs |
| Weight incl. packaging | 41.26 lbs |
| Protection class | 1 |
| Overvoltage category (DC / AC) | 2 / 4 |
| Inverter design | Transformerless |
| Cooling | Active Cooling Technology |
| Installation | Indoor and outdoor installation |
| Min. permissible ambient temperature | -40 °C |
| Max. permissible ambient temperature | 60 °C |
| DC PV connection technology | 2x DC+1, 2x DC+2 and 4x DC- spring-type terminals (AWG14-8) |
| DC battery connection technology | 1x DC+ and 1x DC- spring-type terminals (AWG 12-8) |
| AC connection technology | Spring-type terminals (AWG 14-8); Backup: AWG 16-8 |
| Back-up power functions | PV Point |
| Sound emissions | 42 dB(A) |
| Interference emission class | B |
| DC insulation measurement | Yes |
| Overload behaviour | Operating point shift, Power limitation |
| DC disconnector | Yes |
| DC Reverse polarity protection | Yes |
| Arc fault circuit interrupter (Fronius Arc Guard) | Yes |
| 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 / Fronius Smart Meter |
| Grid connection | NPE |



