Migatronic Sigma One 300 / 400 / 550 Welding Machines

Sigma One: High-Performance Inverter for Welding

The Sigma One is a simple, high-performance welding machine for heavy industrial tasks. Ideal for welding large steel structures in manufacturing plants or on-site.

Welding Programs and Functions

Only the necessary welding functions, no unnecessary fine-tuning. Perfect for root passes and multi-layer welding.

Pulse Welding for Better Quality

With pulse welding, you can increase productivity while reducing heat input, minimizing spatter, and reducing the risk of steel damage.

Continuous Welding, Maximum Productivity

High load capacity that maintains current and quality stably for longer periods, ensuring hours of continuous welding.

Intuitive Control Panel

The graphical display is easy to use, whether you're choosing synergic DC or pulse welding. Over 40 welding programs are available for various materials.

User-Friendly Interface

Settings visually show the impact on the welds, and key information is easily accessible from the main screen.

Updates via SD Card

With SD card updates, you can continually upload the latest welding programs.

Settings Lock

With a lock card, user access can be restricted, ensuring compliance with WPS standards.

Memory Function

Store up to five favorite welding settings and recall them with the push of a button.

Spatter-Proof Design

The durable protective glass resists dust and impacts, keeping the display intact in tough industrial environments.

IGC® Gas Control: Up to 50% Savings

IGC® intelligent gas control optimizes gas flow, providing significant savings while improving weld quality.

Intelligent Torch Module

With the optional module, you can fine-tune parameters directly from the welding torch.

DUO Plus: Better Control and TIG-like Welds

The DUO Plus feature offers better heat control and TIG-like appearance with minimal heat input.

Variants

The Sigma One is available in synergic DC and pulse versions.