The powerful single-phase inverter for residential systems.

The Fronius Primo has several integrated features that set it apart from competitors including dual powerpoint trackers, high system voltage, a wide input voltage range and unrestricted use indoors and outdoors. Other standard features include a Wi-Fi and SunSpec Modbus interface for seamless monitoring and datalogging, Arc Fault Circuit Interruption (AFCI), integrated fuse holders and Fronius's superb online and mobile platform Fronius Solar.web. The Fronius Primo is designed to adjust to future standards, offering a complete solution to code restrictions and technical innovations of tomorrow. It also works seamlessly with the Fronius Rapid Shutdown Box for a reliable NEC 2014 solution. 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 12.5-1
Recommended PV power (kWp)	10.0 kW - 15.0 kW
Max. usable input current (MPPT 1/MPPT 2)	33.0 A / 18.0 A
Max. array short circuit current (1.25 Imax) (MPPT 1/MPPT 2)	41.3 A / 22.5 A
Operating voltage range	80 V - 600 V
Max. input voltage	600 V
Nominal input voltage	425 V
Admissable conductor size DC	AWG 14 - AWG 6 copper direct, AWG 6 aluminum direct, AWG 4 - AWG 2 copper or aluminum with input combiner
MPP Voltage Range	260 - 480 V
Integrated DC string fuse holders	4- and 4+ for MPPT 1 / no fusing requried on MPPT 2
Number of MPPT	2

OUTPUT DATA	Fronius Primo 12.5-1
Max. output power 208 / 240 V	12500 W
Max. continuous output current 208 / 240 V	60.1 A / 52.1 A
Max. efficiency	96.9 %
Admissable conductor size AC	AWG 10 - AWG 2 copper (solid / stranded / fine stranded), AWG 6 - AWG 2 copper (solid / stranded); MultiContactWiringable with AWG 12
Grid connection	208 / 240 V
Frequency	60 Hz
Total harmonic distortion	< 5.0 %
Power factor (cos ac,r)	0 - 1 ind./cap.

GENERAL DATA	Fronius Primo 12.5-1
Dimensions (width x height x depth)	20.1 x 28.5 x 8.9 in.
Weight	76.7 lbs.
Degree of protection	NEMA 4X
Night time consumption	< 1 W
Inverter topology	Transformerless
Cooling	Variable speed fan
Installation	Indoor and outdoor installation
Ambient operating temperature range	-40 - 140, F (-40 - 60, C)
Permitted humidity	0 - 100 %
DC connection terminals	4x DC+1, 2x DC+2 and 6x DC- screw terminals for copper (solid / stranded / fine stranded) or aluminum (solid / stranded)
AC connection terminals	Screw terminals 10 - 2 AWG
Certificates and compliance with standards	UL 1741-2015, UL1998 (for functions: AFCI, RCMU and isolation monitoring), IEEE 1547-2003, IEEE 1547.1-2003, ANSI/IEEEC62.41, FCC Part 15 A & B, NEC Article 690-2014, C22. 2 No. 107.1-01 (September 2001) , UL1699B Issue 2 -2013, CSA TIL M-07Issue 1 -2013

PROTECTIVE DEVICES	STANDARD WITH ALL PRIMO MODELS
AFCI & 2014 NEC Ready	Yes
Ground Fault Protection with Isolation MonitorInterrupter	Yes
DC disconnect	Yes
DC reverse polarity protection	Yes

INTERFACES	STANDARD WITH ALL PRIMO MODELS
Wi-Fi/Ethernet/Serial	Wireless standard 802.11 b/g/n / Fronius Solar.web, SunSpec Modbus TCP, JSON / SunSpec Modbus RTU
6 inputs or 4 digital inputs/outputs	External relay controls
USB (A socket)	Datalogging and/or updating via USB
2x RS422 (RJ45 socket)	Fronius Solar Net, interface protocol
Datalogger and Webserver	Included

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