Lincoln Magnum® 400 MIG Welding Gun – 4.5m, 400A @ 60% (SKU: K471-21)
The Lincoln Magnum® 400 MIG Gun is a heavy-duty welding torch engineered for high-amperage MIG and flux-cored welding applications where heat control, durability, and operator comfort are essential. Designed to perform reliably under demanding conditions, this torch delivers consistent results when welding with both gas-shielded GMAW and self-shielded FCAW wires.
Built to handle the increased thermal load generated during high-current welding, the Magnum 400 features an ergonomic handle design that improves comfort and control during extended welding sessions. Rated at 400 amps at a 60% duty cycle using COâ‚‚, it is ideally suited to industrial fabrication, structural welding, and production environments.
This complete torch package includes the K466-2 adaptor, allowing direct connection to Tweco®-style wire feeders, making it a versatile replacement or upgrade option across a wide range of MIG welding machines.
Key Features & Benefits
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400A @ 60% duty cycle (CO₂) – ideal for heavy-duty welding
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Designed for high-heat applications – reliable performance under load
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Suitable for GMAW and FCAW welding processes
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Ergonomic handle design – enhanced operator comfort and control
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Tweco®-style connector compatibility – flexible machine fitment
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Supplied with K466-2 adaptor – ready to install
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Durable construction – built for industrial use
Technical Specifications
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Product Type: MIG Welding Gun / Torch
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Brand: Lincoln Electric
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Model: Magnum® 400
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Rated Amperage: 400A @ 60% Duty Cycle
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Shielding Gas: COâ‚‚
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Welding Processes: GMAW (MIG), FCAW
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Connector Type: Tweco® style
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Wire Size (Standard Liner): 0.6 – 0.9 mm
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Cable Length: 4.5 metres
Part Number
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SKU / Part No.: K471-21



