Lincoln Electric Invertec V350-PRO Multi-Process Welder
The Lincoln Electric Invertec V350-PRO is a professional multi-process welding machine designed for demanding fabrication, construction, maintenance, and production welding applications. Built as a versatile DC CC/CV welding power source, the V350-PRO can be configured for MIG, flux-cored, Stick, TIG, Innershield, gouging, and other welding processes, depending on the configuration and accessories used.
With a rated output of up to 350 amps at 34 volts and 60% duty cycle, along with a continuous output range of approximately 5–425 amps, the Invertec V350-PRO provides the flexibility needed for a wide range of professional welding applications.
Professional Multi-Process Welding Performance
The Lincoln Invertec V350-PRO welder is designed for welders who need one power source capable of handling multiple welding processes. Its CC/CV output allows it to work with appropriate wire feeders and accessories for MIG and flux-cored welding while also supporting Stick and TIG applications.
For professional welding operations, this flexibility can reduce the need for separate dedicated power sources when the correct configuration and accessories are used.
Lincoln identifies the V350-PRO for applications including training, fabrication, and construction, while its documented process capabilities extend across MIG, flux-cored, Stick, TIG, Innershield, submerged arc, and gouging applications depending on configuration.
350-Amp Lincoln Welding Power Source
The V350-PRO is built for substantial welding output while maintaining a relatively compact inverter design.
The standard published ratings include:
- 350A / 34V / 60% duty cycle
- 300A / 32V / 100% duty cycle
- 5–425A continuous output range
- Up to 80V DC open-circuit voltage
Exact ratings can vary by input configuration, so buyers should verify the model number and nameplate specifications of the particular V350-PRO being purchased.
The combination of high output and a 100% duty-cycle rating at 300 amps makes the machine suitable for extended welding applications when operated within its specified limits.
MIG, Flux-Cored, Stick and TIG Welding
One of the main advantages of the Invertec V350-PRO welding machine is its multi-process capability.
MIG Welding
When paired with a compatible wire feeder, the V350-PRO can serve as the power source for professional MIG welding (GMAW) applications. Lincoln documentation identifies compatible wire feeders including the LF-33 and LN-25 PRO.
This makes the V350-PRO suitable for fabrication and production environments where MIG welding is regularly used.
Flux-Cored Welding
The machine can also be configured for flux-cored arc welding (FCAW), including appropriate self-shielded and gas-shielded applications depending on the setup.
Flux-cored welding can be useful for fabrication, construction, repair, and applications where higher deposition rates or outdoor welding capability are required.
Stick Welding
The V350-PRO provides CC output for Stick welding (SMAW), making it useful for maintenance, construction, fabrication, and repair work.
TIG Welding
The V350-PRO can also be configured for DC TIG welding, making it suitable for compatible steel and stainless-steel applications where TIG process control is required.
Because the V350-PRO is a DC power source, the specific material, polarity, torch configuration, and welding procedure should be considered before selecting it for a particular TIG application.
Designed for Fabrication and Construction
The Lincoln Electric V350-PRO is intended for environments where a durable and flexible welding power source is needed.
Lincoln describes the V350-PRO as a lightweight and portable option for training, fabrication, and construction applications. Its inverter design provides substantial welding capability in a comparatively compact package.
Potential applications include:
- Structural and general fabrication
- Construction welding
- Industrial maintenance
- Equipment repair
- MIG welding
- Flux-cored welding
- Stick welding
- DC TIG welding
- Innershield welding
- Gouging
- Production welding
- Welding education and training
Actual process capability depends on the specific machine configuration, accessories, wire feeder, torch, and welding procedure.
Portable Inverter Welding Machine
Compared with larger conventional welding power sources, the Invertec V350-PRO uses inverter technology to provide substantial welding output in a more compact package.
Lincoln’s published specifications for one V350-PRO configuration list dimensions of approximately 14.8 × 13.3 × 27.8 inches and a weight of about 81 lbs., while CE configurations are listed at approximately 37–37.5 kg, depending on configuration.
This makes the V350-PRO considerably more practical to move around a shop or jobsite than many traditional high-output welding power sources.
Simple Controls and Digital Monitoring
The V350-PRO is designed with a straightforward control layout intended for practical shop and field use. Lincoln documentation describes large digital meters, a simple control panel, and features intended to make setup and operation easier.
When configured for wire-feed welding, the system can also provide digital display information for wire feed speed and voltage, depending on the connected feeder and setup.
Compatible Wire Feeders and Accessories
The V350-PRO is designed to work as part of a complete welding system. Depending on the application, compatible equipment can include wire feeders such as:
- Lincoln LF-33
- Lincoln LN-25 PRO
- Other compatible Lincoln wire feeders
Lincoln documentation also identifies accessories such as interconnection cables, MIG guns, ground cables, remote controls, carts, and other system components for various V350-PRO configurations.
Important: Package contents vary. A machine-only V350-PRO should not be represented as including a wire feeder, MIG gun, cables, cart, or other accessories unless those items are specifically included with the product being sold.
Lincoln Invertec V350-PRO Specifications
| Specification | Details |
|---|---|
| Product | Lincoln Electric Invertec V350-PRO |
| Welding Processes | MIG, Flux-Cored, Stick, TIG, Innershield, Gouging and others depending on configuration |
| Output Type | DC / CC / CV |
| Output Range | 5–425A |
| Rated Output | 350A / 34V / 60% Duty Cycle |
| 100% Duty Cycle Rating | 300A / 32V |
| Maximum OCV | 80V DC |
| Technology | Inverter |
| Input Power | Configuration dependent |
| Dimensions | Approximately 14.8 × 13.3 × 27.8 in. for the listed K1728-5 configuration |
| Weight | Approximately 81 lbs. for the listed K1728-5 configuration |
| Output | CC/CV, DC |
Specifications can vary by model, input configuration, and regional version. Confirm the exact ordering number, input voltage, phase configuration, and included equipment before purchase.
V350-PRO Machine Only vs. MIG Package
When purchasing a Lincoln V350-PRO, pay attention to the package configuration.
Machine Only
The machine-only option is intended for customers who already have the necessary compatible wire feeder, cables, welding accessories, and other equipment.
LF-72 MIG Package
A package configuration may include additional MIG welding equipment and accessories. The exact contents should be clearly identified on the product listing before purchase.
For professional buyers, clearly separating these configurations helps avoid confusion about what is included with the welding machine.
Who Is the Lincoln V350-PRO For?
The Lincoln Invertec V350-PRO is best suited to users who need a flexible professional welding power source rather than a basic single-process welder.
It can be appropriate for:
Professional Welders
Welders who regularly switch between MIG, Stick, TIG, and flux-cored applications.
Fabrication Shops
Businesses that need a flexible welding machine capable of supporting different fabrication processes.
Construction and Maintenance Teams
The portable inverter format makes it practical for applications where equipment may need to be moved between work areas.
Industrial Welding Operations
The high-output capability and multi-process design make it suitable for demanding welding environments when properly configured.
Welding Training Facilities
Lincoln specifically identifies training among the V350-PRO’s intended applications.
Why Choose the Lincoln Invertec V350-PRO?
The Lincoln Electric Invertec V350-PRO combines multi-process flexibility, high welding output, inverter technology, and a relatively portable design in one professional welding power source.
Its 5–425A output range, 350A/34V/60% rating, 300A/32V/100% rating, and CC/CV operation allow it to support a broad range of welding applications when paired with the appropriate accessories.
For fabrication shops, contractors, maintenance professionals, and experienced welders looking for a Lincoln multi-process welding machine, the V350-PRO provides a versatile foundation for building a professional welding setup.
Frequently Asked Questions
What welding processes can the Lincoln V350-PRO perform?
Depending on configuration and accessories, the V350-PRO supports MIG, flux-cored, Stick, TIG, Innershield, gouging and other applications.
Is the Lincoln V350-PRO a MIG welder?
The V350-PRO is a multi-process welding power source, rather than simply a standalone MIG welder. With a compatible wire feeder and appropriate accessories, it can be configured for MIG welding.
What is the maximum output of the V350-PRO?
The published output range is 5–425 amps, with a rated output of 350A at 34V and 60% duty cycle.
What is the V350-PRO’s 100% duty-cycle rating?
The published rating for the referenced configuration is 300 amps at 32 volts at 100% duty cycle. Exact ratings can vary by input configuration.
Does the V350-PRO include a MIG gun and wire feeder?
Not necessarily. Package contents depend on the configuration purchased. Confirm the product’s included accessories before ordering.
Can the V350-PRO be used for TIG welding?
Yes. Lincoln identifies TIG among the processes supported by the V350-PRO, with the appropriate setup and accessories.
Is the V350-PRO portable?
The inverter design makes it substantially more compact than many conventional high-output power sources. Lincoln lists configurations around 81–82.5 lbs, depending on model and configuration.
Shop the Lincoln Electric Invertec V350-PRO
For professional fabrication, construction, maintenance, and multi-process welding applications, the Lincoln Electric Invertec V350-PRO provides a flexible DC welding power source capable of supporting MIG, flux-cored, Stick, TIG and other processes with the correct equipment.
Choose the V350-PRO configuration that matches your welding application and verify the model number, input requirements, condition, and included accessories before ordering.
Franko Morris (verified owner) –
There are quite a few settings, so it took me a little time to get everything figured out. Once I became familiar with the controls, though, changing between processes was pretty straightforward. I like having the flexibility to use the same power source for different types of welding. The machine has handled my regular fabrication work without any major issues.
Ben Rawlins (verified owner) –
We needed a machine that could handle several different welding applications without taking up space with multiple power sources. It has worked well for that purpose. I’ve primarily used it for MIG and stick work, with some TIG applications as well. The output is stable and the machine gives you plenty of control over the welding parameters. It has become one of the machines I reach for most often in the shop.
Keisha DeLawrence (verified owner) –
It’s not the kind of welder I’d buy if portability was my main concern, but in a shop environment that hasn’t been an issue. Overall, it’s been a reliable addition to my equipment.
Kyle Winters (verified owner) –
This is a substantial machine and feels like it was designed for a working shop. The construction is solid, and it has handled regular use without giving me any reason to question its durability. What I appreciate most is the versatility. Instead of having a separate machine for every process, I can configure it for different jobs as needed.
That’s particularly useful when the workload changes from one project to another.
Javier Ambrose (verified owner) –
I’ve had the V350-PRO in the shop for a while now and have been impressed with how versatile it is. I’ve used it for MIG, stick, and TIG work, and having one power source that can handle different jobs is extremely convenient. The controls are straightforward once you spend some time with the machine.
It’s a solid choice for a busy fabrication environment where the equipment gets used regularly.
Patt Donovan (verified owner) –
The machine has been consistent under normal shop use and gives me good control over the welding parameters. It took a little experimentation to find the settings I prefer, but that’s expected with a multi-process machine.
Keith Leory (verified owner) –
The arc performance has been very consistent on the work I’ve done with this machine. I mainly use it for fabrication and repair jobs, switching between different processes depending on what the project requires. It has plenty of adjustment for dialing in the settings, and the machine feels well built. Definitely more of a professional shop machine than something I’d recommend for occasional weekend use.
Sam Davies (verified owner) –
It’s a serious piece of equipment and feels much more suited to professional use than occasional hobby work. If you need one machine that can cover several welding processes, the versatility is the main attraction for me.