10301103 - Tweco Classic No. 3 MIG Gun, 300A, 15ft, Tweco Connection

Tweco Classic No. 3 MIG Gun – The Industrial Standard

The Tweco Classic No. 3 MIG Gun (SKU: 1030-1103) is a semi-automatic, air-cooled welding gun designed for medium to heavy-duty fabrication. Rated at 300 Amps at 60% duty cycle (using CO2), this gun has been the benchmark for reliability and performance in the welding industry for decades. The 1030-1103 configuration comes equipped with a 15-foot (4.6 meter) cable assembly and a standard Tweco backend connection, making it compatible with a vast array of wire feeders and power sources that utilize Tweco adapters.

Engineered for durability, the Classic No. 3 features a heavy-duty metal jacketed conductor tube and an impact-resistant oval handle that fits comfortably in the welder's hand. The cable assembly is constructed with high-quality copper stranding to ensure efficient current transfer and flexibility. This specific model is typically set up for .035" to .045" (0.9mm - 1.2mm) welding wires, utilizing the robust 44-Series liners. Maintenance is straightforward, as the gun uses the ubiquitous Tweco 14 Series contact tips, 24 Series gas nozzles, and 34 Series gas diffusers, ensuring that replacement parts are always easy to source.

The simplified design allows for quick field repairs, reducing downtime in production environments. The connection pin is a standard Tweco #4 style (often referred to simply as a Tweco connection), which provides a solid electrical and mechanical connection to the wire feeder. Whether used in structural steel, heavy equipment manufacturing, or general fabrication, the Tweco Classic No. 3 delivers consistent arc performance and wire feeding.