Böhler Welding’s patented MultiLine Three Level® inverter technology is at the heart of the TERRA NX 400 PME, providing significant benefits. Thanks to this advanced design, the source has exceptional energy efficiency (up to 89%) and a power factor close to unity (0.99), which directly translates into lower electricity bills.

The MultiLine Three Level® Inverter also enables instant and precise control of the welding arc, which is crucial for process stability and the quality of the connections made, especially in advanced pulsed processes. In addition, the technology contributes to a reduction in the size and weight of the device compared to traditional solutions of comparable power, increasing its mobility and facilitating installation.

ArcDrive is an enhanced, digitally controlled MIG/MAG welding process from Böhler Welding, implemented in the TERRA NX 400 PME to provide an extremely stable and dynamically responsive welding arc. This feature is particularly important when welding in difficult positions and with variable free wire exit lengths.

The main benefit for the professional is a significant reduction in spatters, which minimizes the need for time-consuming weld finishing and reduces the cost of cleaning materials. ArcDrive guarantees excellent weld quality and deep penetration when welding carbon steels, stainless steels, aluminum and core wires, increasing efficiency and versatility.

The PulsDrive technology of the TERRA NX 400 PME is a digitally controlled MIG/MAG pulse welding process that implements the “one pulse – one drop” principle. This gives the welder unparalleled control over the transfer of metal into the weld pool, which is key to achieving high-quality welds, especially when welding thin materials and aluminum and stainless steel alloys.

PulsDrive provides an excellent finish to the weld face, minimizes the risk of under and sticking, and reduces heat introduction into the material, limiting distortion. For the professional, this means higher quality, aesthetically pleasing welds and the ability to weld a wider range of material thicknesses with optimal performance.

The Böhler Arc system integrated into the TERRA NX 400 PME offers access to an extensive library of optimized synergy programs for a wide range of materials (steel, stainless steel, aluminum, etc.), wire diameters and shielding gases. Once the material, wire diameter and gas are selected, the device automatically selects the optimal welding parameters, which the welder can fine-tune to his needs.

The benefit to the user is a significant reduction in the time required to set up the machine, the elimination of errors, and the guarantee of reproducible, high-quality welding results even with less experienced personnel. Böhler Arc is the key to increasing productivity and standardizing welding processes in any workshop.

The Double Pulse function of the Böhler Welding TERRA NX 400 PME is an advanced variation of MIG/MAG pulse welding that produces welds with aesthetics comparable to the TIG method, characterized by a regular scale pattern. The process modulates the welding current with two pulse frequencies, which provides excellent control over the weld pool and heat input.

With Double Pulse, it is possible to efficiently weld thin sheets (especially aluminum and stainless steel) with minimal distortion and excellent fusion. For the professional, this means higher visual quality welds, lower stresses and the ability to weld demanding applications where aesthetics and precision are key.