Multiprocess inverters designed for extreme-use applications
Tweco®, an ESAB brand, has introduced the ArcMaster® 401MST (GMAW/SMAW/lift GTAW) and ArcMaster 401S (SMAW/lift GTAW) power sources for on-site and portable welding applications.
The units have a 10- to 400-amp output. At 16.5 by 8.3 by 17.7 in., they weight 54 and 46 lbs., respectively.
Automatic primary voltage selection with no mechanical changeover enables the units to operate off single- or three-phase power, 208 to 230/400/460 VAC. They are suitable for use in industrial fabrication, power generation, pipe fabrication, shipboard installation and repair, petrochemical fabrication, maintenance, and repair and rental.
In addition to adjustable stick arc force and hot start control, both units feature dedicated modes to help optimize performance for specific processes, including 6010 electrodes, 7018 electrodes, and air carbon-arc gouging with carbons up to 0.1875 in. The 401MST also features optimized modes for using 100 percent CO2 or mixed shielding gases, as well as adjustable inductance control.
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