Fronius Fortis: Next-generation manual MIG/MAG welding - flexible, networked, powerful

“With our new Fortis series, we are presenting an extremely versatile solution for high-quality manual MIG/MAG welding. We have specially designed these welding machines to meet the diverse requirements of small and medium-sized businesses,” emphasizes Peter Fronius, Head of System Solutions at Fronius International.

“Fortis combines reliable technology and intuitive operation with maximum connectivity to set new standards in the metalworking industry.” The brand new devices can be seen live for the first time at FABTECH in Chicago (USA) and SCHWEISSEN & SCHNEIDEN in Essen (Germany) in September 2025. Several models will also be available for visitors to try out in person.

One series, many variants

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The Fortis product range contains powerful devices in the 270 to 500 A categories, either as compact all-in-one systems or as split versions with an external wirefeeder for a significantly extended operating range. All models can be equipped with proven Fronius functions such as pulse welding, SynchroPulse, stitch welding, TAC tacking function, HotStart, and anti-stick.

The portfolio is complemented by the Fortis XT, an extremely energy-efficient all-rounder for three-phase mains voltages from 200 to 600 V and single-phase operation up to max. 320 A including CEL mode. As a result these machines are perfect for worldwide use, save energy thanks to their higher power factor, and offer an additional higher output characteristic curve for even greater welding performance.

Rounding off the range is the Fortis Duo. It combines a compact device with an additional, external wirefeeder to enable the use of two wire spools and two welding torches with just one single machine. _“This means that the welder can easily switch between different materials or wire diameters at the touch of a button—and all without any retooling,” explains Michael Eisterhuber, Product Line Manager at Fronius International. “Users save an enormous amount of time through this feature, which is ideal for frequently changing tasks in contract manufacturing, steel construction, or assembly.”_

Developed for a flexible work day

In many companies, welding tasks change on a daily basis, with new materials, changing seam shapes, or different components. The Fronius Fortis was developed as a solution to aid in this dynamic. With up to 240 welding characteristics that have been specially optimized for steel, stainless steel, and aluminum, Fortis guarantees reliable results—even in demanding applications such as vertical-up seams, root passes, or thin sheet metal joints.

Multiprocess—one device for every process

MIG/MAG, TIG, or MMA? It doesn’t matter: Fortis variants are available up to a power category of 500 A with the Multiprocess function and can handle all common welding processes to deliver the highest quality results. _“With Multiprocess, Fortis is not only versatile, but also fit for the future. This means that it is equipped for all possible future tasks that may not even be known today,” says Peter Fronius. “It is therefore the ideal and extremely flexible solution for companies with a wide range of applications.”_

Intuitive operation including welding parameter wizard

_“A central element of the Fortis series is our completely new operating concept,”_ says Eisterhuber. “ _The clear 7_" color display with dynamic visualizations, self-explanatory graphics, and a multilingual menu with over 30 languages to choose from make operation particularly easy—even for less experienced users.” Three reliable rotary and push buttons allow precise adjustments and parameter selection, even when wearing welding gloves. All important working and welding parameters are also visible on the first menu level. Important settings can be saved and the newly integrated welding parameter wizard guides the welder to the ideal setting in just a few steps, leading to fewer errors, less downtime, and greater efficiency and quality in production.

Maximum connectivity—ready for digital manufacturing

Thanks to WiFi and Bluetooth as standard features, the Fortis can be fully integrated into the Fronius software market. The devices are compatible with WeldCube Air, WeldCube Premium, WeldCube Navigator, and Central User Management for user administration, seamless welding data documentation, fleet management, and process reliability. The innovative Vizor Connect welding helmet can also be connected wirelessly and ensures maximum comfort and protection. NFC readers, wireless remote controls, and extensive documentation functions are available as optional extras.

Focus on sustainability and longevity

The new housing concept for the Fortis series relies on a high proportion of recyclable aluminum (53%) and reduces the use of plastic. The devices are particularly easy to maintain, durable, designed for tough use in harsh conditions, and extensively tested, protected by the perfect casing for the sophisticated technology inside. Fortis XT also impresses with energy savings of up to 16%, making it not only extremely powerful, but resource-efficient too.

**Experience live at FABTECH and SCHWEISSEN & SCHNEIDEN**

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Fronius will be presenting all variants of the Fortis for the first time in September 2025 at FABTECH in Chicago (USA) and at SCHWEISSEN & SCHNEIDEN in Essen (Germany). Visitors can experience the devices live, try them out in person, and experience the new levels of user-friendliness and performance for themselves. There will also be an opportunity to win a brand new Fortis at the trade fair in Essen.

Further information at: www.fronius.com/fortis

M4S News Team

SCHWEISSEN & SCHNEIDEN Feature

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M4S TAKE

My take: AI claims need scrutiny. The useful implementations reduce cycle time or defect rates in measurable ways. Vague promises about 'optimization' without specific metrics are usually marketing.

Simon McLoughlin