Design flexibility and unrivaled power capability in one sleek package. Now Assembled in the USA!The transformerless, single-phase Fronius Primo 3.8 kW is the ideal solar inverter for residential applications wth a 208/240 grid connection. The SnapINverter has many standard features, making it convenient and"one-stop shop" for a high quality inverter. The hinge mounting system and lightweight inverter itself creates a streamlined installation process that can be done in under 15 minutes. Several industry-leading additions come standard with the Fronius Primo including Wi-Fi and SunSpec Modbus interfaces for seamless monitoring and datalogging, field proven Arc Fault Circuit Interruption (AFCI), and Fronius' free online and mobile monitoring platform. The Fronius Primo is NEC 2014 compliant and ready for codes and standards of the future. This great solution is now also available with a Revenue Grade Metering option, completely integrated.
| INPUT DATA | Fronius Primo 3.8-1 |
| Recommended PV power (kWp) | 3.0 - 6.0 |
| Max. usable input current (per MPPT) | 18 A / 18 A |
| Total max. DC current | 36 A |
| Max. array short circuit current | 2 x 22.5 A |
| Operating Voltage Range | 80* - 600 V |
| Max. input voltage | 600 V |
| Nominal input voltage | 410 V |
| Admissable conductor size DC | AWG 14...AWG 6 |
| MPP Voltage Range | 200 - 480 V |
| Number of MPPT | 2 |
| OUTPUT DATA | Fronius Primo 3.8-1 |
| Max. output power 208/240 | 3800 W |
| Max. continuous output current 208/240 | 18.3 A / 15.8 A |
| Max. efficiency | 96.7 % |
| Recommended OCPD/AC breaker size 208 / 240 | 25 A / 20 A |
| CEC Efficiency 208/240 | 95.0 % |
| Admissable conductor size AC | AWG 14...AWG 6 |
| Grid connection | 208 / 240 |
| Frequency | 60 Hz |
| Total harmonic distortion | < 5.0 % |
| Power factor | 0.85 - 1 ind./cap |
| GENERAL DATA | Fronius Primo 3.8-1 |
| Dimensions (inches) | 16.9 W x 24.7 H x 8.1 D |
| Weight | 47. 29 lb. |
| Nighttime Consumption | < 1 W |
| Inverter topology | Transformerless |
| Cooling | Variable speed fan |
| Installation | Indoor and Outdoor |
| Ambient operating temperature range | -40 - 131* F |
| Permitted humidity | 0 - 100 % |
| DC connection terminals | 4x DC+ and 4x DC- screw terminals for copper (solid / stranded / fine stranded) or aluminum (solid / stranded) |
| AC connection terminals | Screw terminals 12-6 AWG |
| Certificates and Compliance with Standards | UL 1741-2010, UL1998 (for functions: AFCI, RCMU and isolation monitoring), IEEE 1547-2003, IEEE 1547.1-2003, ANSI/IEEE C62.41, FCC Part 15 A & B, NEC Article 690,C22. 2 No. 107.1-01 (September 2001) , UL1699B Issue 2 -2013, CSA TIL M-07 Issue 1 -2013 |
| PROTECTIVE DEVICES & INTERFACES | Fronius Primo 3.8-1 |
| AFCI &2014 NEC Ready | Yes |
| Ground Fault Protection with Isolation Monitor Interrupter | Yes |
| DC Disconnect | Yes |
| Wi-Fi/Ethernet/Serial | Wireless standard 802.11 b/g/n Fronius Solar.web, SunSpec Modbus TCP, JSON / SunSpec Modbus RTU |
| 2x RS422 (RJ45 socket) | Fronius Solar Net, interface protocol |
| Datalogger and webserver | Yes, included |