Stud Welding System operates from standard 120 V outlet.

Press Release Summary:

Weighing just 86 lb and requiring no special training, N550c Arc Charger™ is capable of precisely welding full range of drawn arc studs up to 3/8 in. pitch diameter. Input energy is drawn from standard 120 V wall outlet, stored in precisely charged electrical storage system, and delivered to weld by digitally controlled, constant current welding power supply. This provides consistent, smooth arc control for drawn arc, gas arc, and short cycle processes with all weldable metals.

Original Press Release:

Doncaster's Nelson Stud Introduces First 550A Arc Welder Powered by 120V Outlet

Revolutionary New Stud Welding System — developed around Nelson’s Patent Pending Arc Charger™ Platform — is a Game Changer for those using the Split Second Fastening process in the construction market 

ELYRIA, OH, -- Nelson Stud Welding, the acknowledged leading stud welding system provider to building contractors, steel fabricators, and other industries, has introduced the first 120-volt stud welding power source developed around Nelson’s industry leading Arc Charger platform.

Designated the N550c Arc Charger™, the new high-speed stud weld system can precisely weld the full range of drawn arc studs up to 3/8” pitch (M8) diameter. The N550c opens up a number of new applications that can benefit from high-strength, drawn arc stud welding but previously was not feasible due to the costs associated with bringing in generators or 3-phase power.  Input energy is efficiently drawn from a standard 120V wall outlet, and stored in a durable, precisely charged electrical storage system. The user can even adjust the rate of this energy draw, allowing an Arc Charger™ to share a single wall outlet with other devices.

The N550c Arc Charger weighs just 86 pounds and requires no special training — making weld set-up quick and easy. The welder just inputs the stud diameter and base material type, and a feature on the system, the “Stud Expert”, automatically selects the right setting.

Stored energy is precisely delivered to the weld by an advanced digitally-controlled, constant current welding power supply. This provides consistent, smooth arc control for drawn arc, gas arc, and short cycle processes with all weldable metals. The Arc Charger’s versatile keypad makes setup easy, with preset buttons provided to save favorite settings. The alphanumeric display shows settings, actual weld results, as well as diagnostic error codes to help with troubleshooting.  The Arc Charger™ is compatible with guns, cables and other accessories from Nelson.

Nelson® Stud Welding, a member of the Doncasters Fastener Division, is now celebrating 75 years as the leading global manufacturer and distributor of weld stud fasteners and application equipment serving a broad range of markets including the automotive, construction, and industrial markets. Stud welding products are suitable for the fastening needs of virtually every industry and our products include externally threaded fasteners, shear connectors, concrete anchors, punching resistor studs, inserts, ports, pipe & cable hangers, weld studs and bosses, and the equipment used to apply, assemble, and weld these items.

For more information, contact: Douglas Phillips, Director of Product Management for Nelson Stud Welding Equipment. Phone: (440) 329-0448; email:

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