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.

• Fronius Primo Datasheet | Download
• Fronius Primo Operating Manual | Download

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

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