Manufactures welding systems, solar inverters and battery charging solutions for industry, trades and the energy sector
Fronius International GmbH
Pettenbach · Sattledt · Thalheim bei Wels · Wels · SteinhausNew on Amplifa
About Fronius
Fronius International GmbH is an Austrian family-owned company headquartered in Pettenbach (Upper Austria) with around 6,500 employees worldwide. The company manufactures welding technology (manual and automated MIG/MAG, TIG and MMA welding systems, including CMT and LaserHybrid processes), photovoltaic inverters, battery storage systems and battery charging systems for industrial trucks and AGVs. Series production of welding systems, solar inverters and battery charging systems has taken place since 2007 at the Sattledt production and logistics site; welding torch manufacturing is also carried out at the company headquarters in Pettenbach. The portfolio is complemented by software solutions (WeldCube, Solar.web), consulting and manufacturing services in its own prototype and production center, an international Repair Center and training courses. Customers include industries such as structural steel construction, automotive, industrial truck technology and photovoltaics. Fronius is represented by 36 international subsidiaries and supplies more than 60 countries via representatives.
- Site
- Pettenbach
- Processes
- MIG/MAG welding (manual), MIG/MAG with pulsed arc, TIG welding (Multiprocess), MMA welding (manual arc welding, Multiprocess), CMT (Cold Metal Transfer) – welding of thin-sheet materials and joining aluminium with steel, LaserHybrid welding, Resistance spot welding (DeltaSpot), Automated welding systems / welding automation
- Materials
- Steel, Aluminium, Stainless steel
- Certificates
- Code of Conduct for employees and business partners (compliance, ESG)
- Founded
- 1945
- Employees
- 6500
- Industries
- Welding technology, Photovoltaics/solar energy, Battery charging technology, E-mobility, Structural steel construction, Industrial trucks and AGVs
- 01
Development and research (Thalheim bei Wels)
- 02
Manufacturing of welding systems, inverters and chargers (Sattledt,
- 03
Assembly of automation components (Steinhaus)
- 04
Software and system monitoring (WeldCube, Solar.web)
- 05
Repair and service (Repair Center International, Steinhaus)
- 06
Sales and marketing (Wels)
Materials and Processes
Steel
Target material of the MIG/MAG welding systems, in particular with over 240 optimised characteristic curves for structural steel construction.
Aluminium
Welded using pulsed arc and CMT process; the DeltaSpot system enables spot welding of aluminium car bodies in large-scale production.
Stainless steel
Stainless steel is processed especially in combination with the pulsed arc of the Fortis series.
Sites
Pettenbach
ATCompany headquarters/administration, welding torch manufacturing
- Welding torch manufacturing
Sattledt
ATProduction and logistics
- Materials
- Castings, plastics, copper, aluminium
- Series production of battery charging systems
- Series production of welding systems
- Series production of solar inverters
Thalheim bei Wels
ATResearch and development (since 2011), production site since 1972
- Test laboratories
Wels
ATMarketing and sales headquarters
Steinhaus
ATRepair Center International, automation component manufacturing
- Manufacturing of automation components
Products and Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| MIG/MAG welding (manual)Joining | – | – | – | – | Steel, Aluminium, Stainless steel |
| MIG/MAG with pulsed arcJoining | – | – | – | – | Steel, Aluminium, Stainless steel |
| TIG welding (Multiprocess)Joining | – | – | – | – | – |
| MMA welding (manual arc welding, Multiprocess)Joining | – | – | – | – | – |
| CMT (Cold Metal Transfer) – welding of thin-sheet materials and joining aluminium with steelJoining | – | – | – | – | Steel, Aluminium |
| LaserHybrid weldingJoining | – | – | – | – | – |
| Resistance spot welding (DeltaSpot)Joining | – | – | – | – | Aluminium |
| Automated welding systems / welding automationJoining | – | – | – | – | – |
| Consulting and manufacturing services in its own prototype and production centerEngineering | – | – | – | – | – |
15 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Manual MIG/MAG welding unit (Multiprocess) | Fronius Fortis 270 | – | – | – | – |
| Manual MIG/MAG welding unit (Multiprocess) | Fronius Fortis 320 | – | – | – | – |
| Manual MIG/MAG welding unit (Multiprocess) | Fronius Fortis 400 | – | – | – | – |
| Manual MIG/MAG welding unit, up to 500 A | Fronius Fortis 500 | – | – | – | – |
| Welding transformer | Fronius | – | – | 1950 | – |
| Inverter welding unit (primary-switched transistor) | Fronius Transarc 500 | – | – | 1981 | – |
| LaserHybrid welding system | Fronius | – | – | 2001 | – |
| CMT welding system (Cold Metal Transfer) | Fronius | – | – | 2005 | – |
| Resistance spot welding system | Fronius DeltaSpot | – | – | – | – |
| Welding simulator | Fronius Virtual Welding | – | – | 2010 | – |
| Battery charging system | Fronius Acctiva Professional Flash | – | – | 2005 | – |
| Grid-connected solar inverter | Fronius Fronius Sunrise | – | – | 1995 | – |
| Solar inverter with high-frequency transformer | Fronius Fronius IG | – | – | 2000 | – |
| Central inverter (photovoltaics) | Fronius Fronius CL | – | – | 2009 | – |
| High-voltage battery storage with DC coupling, 6.3 to 15.8 kWh | Fronius Reserva | – | – | – | – |
Additional services
Quality
In addition to its products, Fronius offers system monitoring, remote maintenance and an international Repair Center for repair work across all business fields. Training courses, seminars and the Virtual Welding Simulator ensure user quality and reduced resource consumption in welder training.
| Evidence | Pettenbach |
|---|---|
| Code of Conduct for employees and business partners (compliance, ESG) |
History
- 1945
Founded by Günter Fronius in Pettenbach as a repair workshop; development of battery charging systems
- 1946
First 50 Hz chargers under the name Fronius
- 1948
First employee
- 1950
First welding transformers
- 1962
Introduction of the FroMIG gas-shielded welding machine
- 1972
Second site in Thalheim bei Wels, relocation of production
- 1980
Klaus Fronius and Brigitte Strauß take over management
- 1981
Transarc 500, the world's first primary-switched inverter welding machine
- 1990
Joint venture in Ukraine as first international subsidiary
- 1992
New strategic business field: solar energy
- 1995
Fronius Sunrise, the first grid-connected solar inverter
- 1998
First digitally controlled MIG/MAG welding machine
- 2001
LaserHybrid welding system
- 2005
Cold Metal Transfer (CMT) process introduced
- 2007
Opening of the Sattledt production and logistics site
- 2010
Virtual Welding Simulator to reduce resource consumption in welder training
- 2012
Elisabeth Engelbrechtsmüller-Strauß takes over management
- 2022
Stake in go-e GmbH (charging infrastructure/wallboxes)
- 2024
Two rounds of layoffs, a total of 1,000 employees affected
- 2025
Merger of the three divisions into the business fields Solar & Energy and Welding; around 6,500 employees worldwide