Fortis — MIG/MAG welding power source 270–500 A (multiprocess)

Fortis — MIG/MAG welding power source 270–500 A (multiprocess)

Country: Austria · Model: Fortis 270 / 320 / 400 / 500

Fortis MIG/MAG welders rated 270, 320, 400 and 500 A replaced the TransSteel line and weld with 3–500 A current and 0.8–1.6 mm wire. They are designed for small and medium companies working mainly with structural steel and changing tasks every day. The machines also weld stainless steel and aluminium, best in pulse mode.

Models: Fortis 270 / 320 / 400 / 500 (Compact, Split, Duo)
MIG/MAG welding current: 3–500 A
Processes: MIG/MAG (Standard, Pulse), TIG DC 3–500 A, MMA 10–500 A, CEL, air-arc gouging
Wire: 0.8–1.6 mm; Fe, CrNi, AlMg, AlSi, flux-cored

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Technical specifications

Customs codes (for reference)
Models	Fortis 270 / 320 / 400 / 500 (Compact, Split, Duo)
MIG/MAG welding current	3–500 A
Processes	MIG/MAG (Standard, Pulse), TIG DC 3–500 A, MMA 10–500 A, CEL, air-arc gouging
Wire	0.8–1.6 mm; Fe, CrNi, AlMg, AlSi, flux-cored
Mains voltage	3×400 V; XT 200–600 V (single-phase up to 320 A); 600 V for 400/500
Cooling	gas or water (320–500 A)
Features	up to 240 synergic curves
HS code	8515.39
UKTZED code (Ukraine)	8515399000
CN code (EU)	85153990

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026. Customs codes are for reference only; the final code is determined at customs declaration for the specific model.

Description

The Compact version has a built-in wire feeder, Split works with an external feeder for a larger working radius, and Duo (from 320 A) adds a second external feeder for working with two wires. Fortis 270 is made only in a low housing, Fortis 320 in a low one (gas cooling only) and a high one. The memory holds up to 240 synergic characteristics for Fe, CrNi, AlMg, AlSi, flux-cored and self-shielded wires, with Standard and Pulse packages, SynchroPulse for aluminium, Stitch intermittent welding and the Pulse/Standard Mix option for vertical welds. The multiprocess function (standard for 270/320 Compact, optional for 400/500) adds TIG DC 3–500 A with TAC tacking and MMA 10–500 A with CEL, air-arc gouging, HotStart and MMA Pulse. The interface supports more than 30 languages, and the machine works with WeldCube Air and WeldCube Premium, the Vizor Connect mask and a Bluetooth remote. The housing is 53 % recycled aluminium.

How to choose

The choice depends on current and wire feeding method. For repair and installation work next to the machine, Fortis 270 or 320 Compact is enough, Split is taken for large structures, and Duo when two wires are used in turn. The standard version runs on 3×400 V, XT works in 200–600 V networks and with generators, and a 600 V version exists for 400 and 500 A. When 600 A, the LSC, PMC and CMT processes or a 7″ display are needed, the modular TPS/i is more suitable.

Request a price and lead time

Fortis — MIG/MAG welding power source 270–500 A (multiprocess). We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

Can water cooling be added to the Fortis 320 later?

Yes, on the 320, 400 and 500 A models a liquid cooling circuit can be added at any time, as the housing already has room for it. The exception is the low housing of the Fortis 320, which comes only with gas cooling.

Does the Fortis work from a single-phase mains or a generator?

The XT version is designed for 200–600 V networks and delivers up to 320 A single-phase, depending on the mains protection. It is fully compatible with generators.

How does Fortis Compact differ from Split?

In Compact the wire feeder is built into the power source housing. Split works with an external feeder, which increases the working radius around the machine.

Is the Fortis suitable for aluminium?

Yes, especially in pulse mode. For aluminium there is the SynchroPulse function and synergic characteristics for AlMg and AlSi.