Fronius Symo Hybrid Series: Technical Overview

Introduction

The Fronius Symo Hybrid series is a flexible solution for individual storage needs, available in power categories ranging from 3.0 to 5.0 kW. This series allows surplus energy from a photovoltaic (PV) system to be stored in various batteries. The Fronius Symo Hybrid is compatible with the Fronius Solar Battery and other storage devices, such as LG Chem and BYD. It features Intelligent Multi Flow Technology, enabling AC and DC coupling of battery storage and simultaneous supply to loads and battery charging, even in backup power mode.

Key Features

• Dynamic Peak Manager
• Integrated Data Communication
• Smart Grid Ready
• SnapINverter Technology
• Zero Feed-in
• Multi Flow Technology

Technical Specifications

Input Data

Model	SYMO HYBRID 3.0-3-S	SYMO HYBRID 4.0-3-S	SYMO HYBRID 5.0-3-S
Number of MPP Trackers	1	1	1
Max. PV Input Power	5.0 kW	6.5 kW	8.0 kW
Max. Input Current	1 x 16 A	1 x 16 A	1 x 16 A
Max. Short Circuit Current, Module Array	24 A	24 A	24 A
DC Input Voltage Range	150 - 1000 V	150 - 1000 V	150 - 1000 V
Feed-in Start Voltage	200 V	200 V	200 V
Usable MPP Voltage Range	150 - 800 V	150 - 800 V	150 - 800 V
Number of DC Connections (PV)	2	2	2

Battery Input

Model	SYMO HYBRID 3.0-3-S	SYMO HYBRID 4.0-3-S	SYMO HYBRID 5.0-3-S
Max. Output Power to Battery	Depends on connected battery	Depends on connected battery	Depends on connected battery
Max. Input Power from Battery	Depends on connected battery	Depends on connected battery	Depends on connected battery

Output Data

Model	SYMO HYBRID 3.0-3-S	SYMO HYBRID 4.0-3-S	SYMO HYBRID 5.0-3-S
AC Nominal Output (Pac,r)	3,000 W	4,000 W	5,000 W
Max. Output Power	3,000 VA	4,000 VA	5,000 VA
Max. Power from Grid to Battery	3,000 VA	4,000 VA	5,000 VA
Max. AC Output Current (Iac max)	8.3 A	8.3 A	8.3 A
Grid Connection (Voltage Range)	3NPE 400 V / 230 V or 3NPE 380 V / 220 V (+20 % / -30 %)
Frequency (Frequency Range)	50 Hz / 60 Hz (45 - 65 Hz)
Total Harmonic Distortion	< 3 %	< 3 %	< 3 %
Power Factor (cos φac,r)	0.85 - 1 ind. / cap.	0.85 - 1 ind. / cap.	0.85 - 1 ind. / cap.

General Data

Model	SYMO HYBRID 3.0-3-S	SYMO HYBRID 4.0-3-S	SYMO HYBRID 5.0-3-S
Dimensions (HxWxD)	645 x 431 x 204 mm	645 x 431 x 204 mm	645 x 431 x 204 mm
Weight	19.9 kg	19.9 kg	19.9 kg
Degree of Protection	IP 65	IP 65	IP 65
Protection Class	1	1	1
Overvoltage Category (DC / AC)	2 / 3	2 / 3	2 / 3
Inverter Design	Transformerless	Transformerless	Transformerless
Cooling	Regulated air cooling	Regulated air cooling	Regulated air cooling
Installation	Indoor and outdoor installation	Indoor and outdoor installation	Indoor and outdoor installation
Ambient Temperature Range	-25 - +60°C	-25 - +60°C	-25 - +60°C
Permitted Humidity	0 - 100 %	0 - 100 %	0 - 100 %
Max. Altitude	2,000 m (unrestricted voltage range)
DC PV Connection Technology	2x DC+ and 2x DC- screw terminals 2.5 - 16 mm²
DC Battery Connection Technology	1x DC+ and 1x DC- screw terminals 2.5 - 16 mm²
AC Connection Technology	5-pin AC screw terminals 2.5 - 16 mm²
Certificates and Compliance with Standards	VDE AR N 4105, ÖVE / ÖNORM E 8001-4-712, DIN V VDE 0126-1-1
Emergency Power Function	Yes (2)	Yes (2)	Yes (2)

Efficiency

Model	SYMO HYBRID 3.0-3-S	SYMO HYBRID 4.0-3-S	SYMO HYBRID 5.0-3-S
Max. Efficiency (PV - grid)	97.7 %	97.7 %	97.9 %
Max. Efficiency (PV - battery - grid)	> 90.0 %	> 90.0 %	> 90.0 %
European Efficiency (PV - grid)	95.2 %	95.7 %	96.0 %
MPP Adaptation Efficiency	> 99.9 %	> 99.9 %	> 99.9 %

Compatible Batteries (3)

BYD Models	Backup Power	LG Chem Models	Backup Power
Battery-Box H 6.4	Yes, 3-phase	RESU 7H	No
Battery-Box H 7.7	Yes, 3-phase	RESU 10H	No
Battery-Box H 9.0	Yes, 3-phase
Battery-Box H 10.2	Yes, 3-phase
Battery-Box H 11.5	Yes, 3-phase
Battery-Box Premium HVM	Yes, 3-phase

Company Overview

Founded in 1945, Fronius is a leader in welding technology, photovoltaics, and battery charging. With around 5,660 employees worldwide and 1,321 patents, the company demonstrates its innovative spirit. Fronius is dedicated to sustainable development, integrating environmental, social, and economic factors equally to remain the innovation leader.