Fronius Primo 4.6-1 (2MPPT) Mono
Fronius Primo 4.6-1 (2MPPT) Mono
Fronius Solar.web interface
Fronius Solar.web application
Fronius Primo 4.6-1 (2MPPT) Mono
Fronius Solar.web interface
Fronius Solar.web application

Fronius Primo 4.6-1 (2MPPT) Mono


Single-phase PV inverter with 3.0 kW nominal output, WLAN and integrated communication package. The Fronius Primo perfectly completes the new SnapINverter generation.

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Product warranty: 5 years

Fronius Primo 4.6-1 (2MPPT)...


Fronius Pirmo SIngle

The Fronius Primo in power categories from 3.0 to 8.2 kW perfectly completes the new SnapINverter generation. This single-phase, transformerless device is the ideal inverter for private households. Its innovative SuperFlex Design provides maximum flexibility in system design, while the SnapINverter mounting system makes installation and maintenance easier than ever before. The communication package included as standard, with WLAN, energy management, several interfaces and much more besides, makes the Fronius Primo a communicative inverter for owner-occupiers


Brand : Fronius

Model : Primo 3.0-1

Power : 3 kW

Dimensions LxHxD : 645x431x204 mm

Weight : 21,50 kg

Warranty : 5 years

Icon: SnapINverter mounting system SnapINverter mounting system

The special feature in the design of our devices is that the connection compartment is separate from the power stage set compartment. They are installed separately. The connection area and all its cabling is fitted to the wall first. The power stage set compartment is fitted afterwards. The innovative SnapINverter mounting system makes installation and servicing extremely user-friendly. The inverter is simply placed in the wall bracket and then secured. It is not necessary to remove the entire inverter for servicing, just the power stage set compartment. All the cabling, settings and configurations remain in place.

Icon: Integrated WLAN interfaceIntegrated WLAN interface

Simple, user-friendly system monitoring is very important to Fronius. With the Fronius Datamanager, we are the first inverter manufacturer to offer a WLAN interface in the inverter itself. The inverter is connected to the internet without additional cabling and grants you the perfect overview of how the PV system is operating.

Icon: SuperFlex DesignSuperFlex Design

The Fronius SuperFlex Design combines all the system design requirements into a single inverter form. Two MPP trackers combined with a high system voltage and wide input voltage range guarantee maximum flexibility. Every DC input, and therefore every MPP tracker, is able to accommodate the entire nominal output of the inverter. The result: an inverter for every application. Thanks to the SuperFlex Design, a single inverter can cope with any challenge – including different roof orientations, shading of one or two strings, or the use of residual modules.

Icon: Dynamic Peak ManagerDynamic Peak Manager

The Dynamic Peak Manager is a new MPP tracking algorithm that dynamically adapts its behaviour when searching for the optimal operating point. The special feature is that the Dynamic Peak Manager automatically checks the entire characteristic curve on a regular basis and finds the global Maximum Power Point (GMPP), even in partial shade.

Icon:Smart Grid ReadySmart Grid Ready

Fronius inverters are ready for the Smart Grid of tomorrow. The inverters are optimally equipped to meet the technical requirements of grids in the future. A series of smart functions, known as Advanced Grid Features, are built into the devices. These include a number of control functions for optimum feed-in of reactive power and effective power. These functions are designed to enable stable grid operation even when the PV system density is very high and to prevent unwanted interruptions to feed-in and associated yield losses. Fronius inverters therefore help to guarantee the yield of a PV system.

Icon: Zero feed-inZero feed-in

Today, an increasing number of grid operators in various countries are stipulating a PV power feed-in limit as a precondition before a system is connected to the grid. With dynamic power reduction, Fronius is offering a solution for optimum feed-in management. The inverter supplies the household consumers with energy first and then reduces the system output to the maximum energy feed-in permitted by the grid operator. With Fronius inverters, zero feed-in is also a possibility thanks to this function, meaning that no PV power is fed into the grid. The relevant requirements of the grid operator can be fulfilled by simply enabling a setting on the inverter's web interface.

Simple, fast and efficient assembly


Simple, fast and efficient assembly

* Step 1: Attach and wire without effort
BJ integrated DC *

Step 2: Place the inverter section in a few seconds !
wall bracket, lightweight (- 4kg)

Manage your production with Solar.web


Manage your production with Solar.web

Residential solutions


Setting up system monitoring using WLAN


Fronius SnapINverter commissioning checklist


Innovative SnapINverter mounting technology


Technical Data


INPUT DATA Fronius Primo 4.6-1
Max. input current
(Idc max1 / Idc max2)
12.0 A / 12.0 A
Max. array short circuit (MPP1 / MPP2) 18.0 A / 18.0 A
Min. input voltage
(Udc min)
80 V
Feed-in start voltage
(Udc start)
80 V
Nominal input voltage (Udc,r) 710 V
Max. input voltage
(Udc max)
1,000 V
MPP voltage range
(Umpp min - Umpp max)
240 - 800 V
Number MPP trackers 2
Number of DC connections 2 + 2
Max. PV generator output (Pdc max) 6.9 kWpeak
AC nominal output (Pac,r) 4,600 W
Max. output power 4,600 VA
Max. output current (Iac max) 20.0 A
Grid connection (voltage range) 1 ~ NPE 220 V / 230 V (180 V - 270 V)
Frequency (frequency range) 50 Hz / 60 Hz (45 - 65 Hz)
Total harmonic distortion < 5 %
Power factor (cos φac,r) 0.85 - 1 ind. / cap.
(height x width x depth)
645 x 431 x 204 mm
Weight 21.5 kg
Degree of protection IP 65
Protection class 1
Overvoltage category (DC / AC)1) 2 / 3
Night time consumption < 1 W
Inverter design Transformerless
Cooling Regulated air cooling
Installation Indoor and outdoor installation
Ambient temperature range -40°C to +55°C
Permitted humidity 0 - 100 %
Max. altitude 4,000 m
DC connection technology 4x DC+ and 4x DC- screw terminals 2.5 - 16 mm²
Mains connection technology 3-pole AC screw terminals 2.5 - 16 mm²
Certificates and compliance with standards DIN V VDE 0126-1-1/A1, IEC 62109-1/-2, IEC 62116, IEC 61727, AS 4777-2, AS 4777-3, G83/2, G59/3, CEI 0-21, VDE AR N 4105
Max. efficiency 98.0 %
European efficiency (ηEU) 97.0 %
η at 5 % Pac,r2) 80.8 / 82.5 / 82.5  %
η at 10 % Pac,r2) 88.9 / 94.4 / 92.9 %
η at 20 % Pac,r2) 93.0 / 97.0 / 95.9 %
η at 25 % Pac,r2) 93.9 / 97.2 / 96.6 %
η at 30 % Pac,r2) 94.5 / 97.3 / 96.9 %
η at 50 % Pac,r2) 95.6 / 97.9 / 97.6 %
η at 75 % Pac,r2) 96.0 / 97.9 / 97.8 %
η at 100 % Pac,r2) 96.2 / 97.9 / 98.0 %
MPP adaption efficiency > 99.9 %
DC insulation measurement Yes
Overload behaviour Operating point shift, power limitation
DC disconnector Yes
Reverse polarity protection Yes
WLAN / Ethernet LAN Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON)
6 inputs and 4 digital inputs/outputs Interface to ripple control receiver
USB (type A socket)3) Datalogging, inverter update via USB flash drive
2 x RS422 (RJ45 socket) 3) Fronius Solar Net, Interface protocol
Signalling output 3) Energy management (floating relay output)
Datalogger and Webserver Included
External input 3) S0 meter connection / Evaluation of overvoltage protection
RS485 Modbus RTU SunSpec or meter connection

1) Testing to IEC 62109-1.
2) And at Umpp min / Udc,r / Umpp max
3)Also available in the light version.

Subject to modifications.

500 Items

Data sheet

Inverter power
Maximum PV input voltage
1000 V
4600 VA
Monophasé / Triphasé
Nombre de MPPT

Specific References