Home Shop 400A Tweco Style MIG Gun with 20ft Cable and Euro Connector
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CX420-3545 - 400A Tweco Style MIG Gun with 20ft Cable and Euro Connector

Packaging: 1 per each
$528.52/ea

Usually ships within 3-5 business days

SKU: CX420-3545 Categories: ,

OVERVIEW

Heavy-Duty 400 Amp MIG Welding Gun

The CX420-3545 is a premium aftermarket MIG gun designed to meet the rigorous demands of industrial fabrication and heavy manufacturing. Rated at 400 Amps, this air-cooled torch is engineered to handle high-deposition welding processes using flux-cored or solid wires. It is an ideal replacement or upgrade for welders requiring a robust tool that can withstand the heat and physical abuse of a busy shop floor.

Extended Reach and Versatility

One of the standout features of this model is its 20-foot (6.1-meter) cable assembly. Standard MIG guns often come in 10 or 15-foot lengths, which can be limiting when working on large trailers, structural beams, or agricultural equipment. The extra length provided by the CX420-3545 allows the operator to move freely around the workpiece without constantly repositioning the heavy wire feeder or power source. This improves workflow efficiency and safety by reducing cable clutter and machine movement.

Universal Compatibility

Equipped with a standard Euro backend connection, this MIG gun offers plug-and-play compatibility with a vast array of welding machines. The Euro connector is a quick-disconnect system that houses power, gas, and trigger signals in a single robust interface. This makes it compatible with many machines from brands like ESAB, Miller (with adapters), Lincoln (with adapters), and many European-style power sources. The gun comes pre-configured for 0.035" to 0.045" wire diameters, covering the most common industrial wire sizes.

Cost-Effective Maintenance

Maintenance is simplified through the use of standard Tweco-style consumables. The gun utilizes the widely available 14-series contact tips, 24-series gas nozzles, and 54-series gas diffusers. These parts are stocked by virtually every welding supply distributor, ensuring that you never experience downtime waiting for proprietary components. The front-end design is proven to provide excellent gas coverage and electrical conductivity, resulting in stable arcs and high-quality welds.

Additional Information
Packaging Description:1 per each
Brand:Tweco Style
Amps:400amp
Length :20 ft
Front End:Tweco
Back End:Euro
Wire Size:0.035/0.045
Cooling Method:Air Cooled
Duty Cycle:60% @ 400A
Consumable Series:Tweco 4 Series
Handle Style:Ergonomic Curved
Cable Type:Coaxial
Trigger Type:Standard

INCLUDED

  • 1 x 400 Amp Air-Cooled MIG Gun (20ft)
  • 1 x Installed Liner (0.035"-0.045")
  • 1 x Contact Tip (0.035" or 0.045")
  • 1 x Nozzle
  • 1 x Euro Backend Connector

APPLICATIONS

  • Structural Steel Fabrication
  • Heavy Equipment Repair
  • Shipbuilding and Marine Welding
  • Trailer Manufacturing
  • General Industrial Fabrication
  • Automotive Frame Repair

FAQ

This gun uses standard Tweco #4 style consumables, including 14-series contact tips, 24-series nozzles, and 54-series gas diffusers.

It will fit any welding machine equipped with a Euro-style central connector socket. If your machine uses a direct connection (like some older Miller or Lincoln units), you may need an adapter kit.

The gun is rated for 400 Amps at 60% duty cycle using CO2 gas, which is standard for air-cooled guns of this class.

While possible, pushing soft aluminum wire through a 20-foot cable is difficult and prone to bird-nesting. For aluminum, a spool gun or a push-pull system is recommended, or a shorter gun with a Teflon liner.

Yes, it comes pre-installed with a steel liner suitable for 0.035" to 0.045" welding wire.

No, this is an air-cooled MIG gun. It relies on the shielding gas and ambient air to dissipate heat.

The Euro connection consolidates the power, gas, and trigger pins into a single quick-disconnect fitting, making it very easy to swap guns without tools.

While the exact weight depends on the cable length, a 20ft 400A gun is substantial due to the heavy copper cabling required for the amperage. However, the ergonomic handle helps balance the weight during use.

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