SKU: 86008866351

HTP® Invertig 400 AC/DC Welder

Sale price$3959.55 Regular price$4399.50
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  • USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

HTP® Invertig 400 AC/DC WelderPlease note that we are currently sold out of our Invertig 400 new inventory should be arriving by the end of June. We designed the HTP America Invertig 400 AC DC for heavy use in industrial settings; applications of use include precision fabrication, motor sports and racing fabrication, pipe fabrication, aluminum fabrication, aerospace work and repair, along with work and repair in ship and rail yards. The Invertig 400 runs the following processes:

Please note that we are currently sold out of our Invertig 400-new inventory should be arriving by the end of June.

We designed the HTP® America Invertig 400 AC/DC for heavy use in industrial settings; applications of use include precision fabrication, motor sports and racing fabrication, pipe fabrication, aluminum fabrication, aerospace work and repair, along with work and repair in ship and rail yards. The Invertig 400 runs the following processes: TIG (GTAW), Pulsed TIG (GTAW-P), Stick (SMAW), and Pulsed Stick (SMAW-P). When connected to single-phase, 208V to 240V power, the Invertig 400 features the highest output of any welder on a 50 amp circuit—a full 350 amps of raw welding power! Additionally, the versatile Invertig 400 runs on 3-phase power from 208V to 575V, providing the full welding amperage of 4 to 400 amps. The Invertig 400 showcases a rated output of 350 amps when run on single-phase and a rated output of 400 amps, with a remarkable 100% duty cycle at 300 amps, when run on 3-phase. Planning to run this machine on 220-Please let us know if you have less than 218 volts.

General Features

  • Automatically adjusts for input voltage: 208-240V on single-phase and 208-575V on 3-phase
  • Meters can be calibrated for certification
  • Smart water-cooler that only turns on when needed and stops the arc when it detects a low coolant level-please let us know if you plan to use this on 220 or 480 so we can correctly set up the water cooler for you.
  • The cooling fans blow directly into heat sinks and the circuit boards are protected from grinding dust and moisture by a special lacquer coating which makes the machine IP23
  • Cooling fans work on-demand; the fans only power up when cooling is required, reducing noise and eliminating unwanted grinding dust from being pulled into the machine while the machine is idling
  • This machine has High Frequency start with the option to change to Lift-Arc Start when you work around sensitive electronics where high frequency is unwanted
  • 30 memory programs allow you to save specific welding parameters for 30 different welding jobs
  • NEW -Air Carbon Arc gouging mode.  See below.

Stick Features

  • Arc-Force (DIG): Helps reduce "sticking" of the electrode
  • Hot-Start: For easy arc strikes
  • DC and AC Stick Welding: AC frequency and balance can be adjusted in Stick mode as well
  • Pulse Stick Welding: Makes bridging gaps easier, welds out of position better, and reduces heat input
  • NEW -Air Carbon Arc gouging mode. Air carbon arc gouging is a thermal cutting process of removing or severing metal by heat from a carbon arc. The process uses a carbon/graphite electrode, power source, and compressed air. The intense heat arc produced between the tip of the electrode and the metal workpiece melts and cuts the metal.

TIG Features

  • 350 amp output on 50 amp Single-Phase Circuit
  • Asymmetric AC allows you to limit Electrode Positive or Electrode Negative amperages separately, which gives you more control over heat input on critical welds
  • AC Balance: Adjustable from 10 to 90%; allows precise control of oxide removal vs. penetration
  • AC Frequency: 20Hz to 400Hz (under 100 amps) and 20Hz to 200Hz (over 100 amps); Helps reduce or enhance heat input and focus the arc
  • Three AC Waveforms: Soft Square, Square, and Triangular

*Upgrade options available, via drop down boxes above, for additional charges.

Please note: Other upgrade options may be available. Please contact Customer Service at (847) 357-0700 to discuss your upgrade options.

Warranty Information: The Invertig 400 welder (machine only) includes a 3 year warranty, the Smart water cooler has an 18 month warranty, and the TIG welding torches are warrantied for a period of 90 days against defects in material and workmanship. 

IMPORTANT INFORMATION REGARDING TRUCK FREIGHT SHIPMENTS

The Invertig 400 SHIPS to any business/commercial address with access to a forklift in the Contiguous United States for a flat rate fee that will be applied at check out. If you choose to ship the machine to your residence, accessorial fees will apply (a residential delivery fee, a lift-gate service fee, and possibly a limited access fee). Accessorial fees vary by ship to location and by freight carrier. You may place your order online, but you will be contacted by Customer Service to arrange and pay for any applicable accessorial fees. To avoid additional accessorial fees, we can also ship the machine to your nearest freight terminal, where the carrier will hold your machine for you to pick-up. **Please note that if you have indicated that you do not need lift gate at time of delivery and the carrier drops the lift gate, you will be contacted to pay the additional charge for this service. **

Also, if your ship to address is in Alaska, Guam, Hawaii, Puerto Rico, or any other U.S. Territory outside of the Contiguous United States, additional shipping charges will apply and accessorial fees may apply. You may still place your order online, but you will be contacted by Customer Service to arrange and pay for partial shipping along with any applicable accessorial fees.


IMPORTANT INFORMATION REGARDING TRUCK FREIGHT SHIPMENTS AND LOST OR DAMAGED GOODS

KEEP ALL SHIPPING CARTONS AND PACKAGING MATERIALS!

Your truck freight shipment leaves our facility and is accepted by the freight carrier in good condition. The material becomes your property when signed for by the freight carrier. Our responsibility for the shipment ceases when signed for and removed from our facility by the freight carrier.

Inspect your shipment thoroughly as soon as received. If possible, unpack the shipment in the presence of the driver. If this is a "HOLD ON DOCK FOR PICK-UP" shipment, inspect the shipment prior to leaving the freight terminal. If you do not inspect the shipment for loss or damage prior to signing for and leaving the freight terminal with the shipment, then the freight carrier will claim that you damaged the shipment bringing it home. If you notice loss or damage, then you must note this on the freight bill.

We are willing to assist you in every possible manner in the collections of claims for loss or damage, but this willingness does not make us responsible for such collection of claims or replacement of materials.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86008866351

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4.5 ★★★★★
Based on 1415 reviews
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Rumor
Omaha, US
★★★★★ 4
Good quality, but a few issues with the hidden mounts and levelness.
Size: 35x7 2Pcs, Color: Black, Size: 35x7 2Pcs, Color: Black
These are quite nice and also sturdy. Only complaint I have is that I bought a couple of these, and on one of them, only one of them, it was difficult to get the hidden mounts to go into the holes. I think it was probably a manufacturing defect thing. Also, on that particular one, it wasnt as level as the other. Not a show stopper, but if you need a perfectly level type of mounting situation, I would be careful here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2025
N
Verified Purchase
NatKenneally
Omaha, US
★★★★★ 5
Great value/easy to install.
Size: 24x6 2Pcs, Color: Black, Size: 24x6 2Pcs, Color: Black
Great product and great value. Easy to install and adds a nice touch to a bathroom.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
B
Verified Purchase
Betty D
Cuba, US
★★★★★ 5
Easy hanging
Size: 31x7 2Pcs, Color: Black
Great size and easy to hang. Have purchased many for my home.
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Reviewed in the United States on May 20, 2026
D
Verified Purchase
David S.
Chelsea, US
★★★★★ 5
Look great!
Size: 40x7 2Pcs, Color: Black
Love the way these turned out in my office! I connected 3 shelves in a row across the wall to make one long shelf and it looks great!
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Reviewed in the United States on April 16, 2026
C
Verified Purchase
Chris snyder
Phoenix, US
★★★★★ 3
Nice looking. Not very sturdy. Easy to install.
Size: 40x7 2Pcs, Color: White, Size: 40x7 2Pcs, Color: White
Update: The shelf slopes at about a 45° angle when you put anything more than about a pound on the outside edge of it. Perfectly fine up against the wall. Just seems like the braces inside aren't long enough to really give the stability needed. Bracket is nice and tight against the wall. Had to add braces underneath to hold a small plant, a photo and a small container. Wa sloping more and more each week The shelves look great and we're pretty easy to install. They have a single bracket that is very easy to mount to the wall and get nice and level.. The downside is that the bracket isn't long enough to go between studs. This seems like a pretty simple oversight. I mean why wouldn't you make it long enough to go stud to stud? Secondly and maybe more fatally the bars that go inside the shelf to support them coming out from the wall are significantly shorter than the depth of the shelf. Unfortunately this means the shelf is only supported the first few inches coming out from the wall so there is the potential for a slight lean forward.. The anchors they send are trash. Cheap soft plastic that just tears and bends with a screwdriver. I would suggest spending $2 and grabbing your own anchors from Ace or home Depot. The shelves are essentially made of a high grade cardboard kind of wood. They are not going to support much weight or last for years and years however there incredibly affordable and look nice and easy to install. Long as your expectations are right you'll be happy.
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Reviewed in the United States on October 23, 2023

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