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Tweco M415-3545 air-cooled MIG gun with straight handle and 15 ft cable

Tweco

Tweco M415-3545 400 A .035-.045 15 ft welding gun

SKU CH-92YH-VDT83 MPN M415-3545

Air-cooled MIG gun rated 400 A at 60 % duty cycle, accepts .035–.045 in wire and includes a 15 ft Miller-compatible cable

  • Product typeAir Cooled
  • 400 A capacity handles heavy fabrication jobs
  • 60 % duty cycle sustains long weld runs without overheating
  • Air-cooled design removes the need for water lines
  • 15 ft cable gives wide reach around large workpieces
  • Miller-compatible rear connection fits existing wire feeders

400 Amp Air-Cooled MIG Gun

The Tweco M415-3545 is a 400 A air-cooled MIG gun built for professional welding. It handles .035 to .045 inch solid, flux-cored and aluminium wire with a 60 % duty cycle using CO2 shielding gas. The 15 ft cable uses a Miller-compatible rear connection and a fixed 60-degree neck.

Verify wire feeder and power source compatibility

Confirm your machine accepts a Miller-style rear connection and can deliver up to 400 A at the required duty cycle. Ensure the drive rolls and liner match the .035 to .045 inch wire range and that your gas supply is set for CO2. The gun uses Tip Series 14 consumables for tip replacement.

Suited for high-amperage fabrication and repair

This gun suits welders running GMAW or FCAW processes at higher amperages with a straight-handle preference. It is not for operators needing a water-cooled torch for continuous heavy-duty cycles or a flexible neck for tight joint access. Buyers requiring a different rear connection style should look elsewhere.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $437.99
Pricier than about 90% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameTweco
Model name358-1040-1136
Product typeAir Cooled

Questions about this item

Does the Tweco M415-3545 come with a contact tip or do I need to buy one separately?

The gun uses Tip Series 14 consumables. A contact tip for the chosen wire diameter must be purchased separately.

How do I decide between the .035 and .045 wire capability on this model?

The gun accepts solid, flux-cored or aluminium wire from .035 in up to .045 in. Choose the diameter that matches your wire feed and application.

What does the 400 A rating mean when I am welding at the 60 percent duty cycle?

You can weld continuously at 400 A for six minutes out of every ten; the gun must cool for the remaining four minutes.

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