P4-15M - Tweco #4 Style MIG Gun - 400A - 15ft - Miller Connection

Heavy-Duty 400A MIG Gun for Industrial Applications

The P4-15M is a premium quality, air-cooled MIG welding gun designed to serve as a robust replacement or upgrade for industrial welding setups. Engineered to the specifications of the classic Tweco #4 style, this gun is rated for 400 Amps at a 60% duty cycle using CO2 gas, making it suitable for structural steel, heavy fabrication, and manufacturing environments where high heat and long arc-on times are common. The 'P4' designation indicates its compatibility with the Pro-Grip or standard #4 series architecture, ensuring that it stands up to the rigors of daily shop use.

One of the primary technical advantages of this specific model is its Miller back end. This connector is pre-configured to plug directly into Miller wire feeders and integrated MIG machines, eliminating the need for adapters or complex rewiring. The 15-foot cable assembly offers a significant working radius, allowing the operator to move freely around large workpieces without constantly repositioning the wire feeder. The cable itself utilizes high-strand-count copper for optimal conductivity and flexibility, encased in an abrasion-resistant rubber jacket that withstands sparks, spatter, and shop floor dragging.

Maintenance and inventory management are simplified thanks to the gun's use of standard Tweco style consumables. It utilizes the ubiquitous 14-series contact tips, 24-series gas nozzles, and 54-series gas diffusers. These parts are among the most widely available in the welding industry, ensuring that replacement wear parts can be sourced quickly and economically from virtually any supplier. The gun comes ready to weld out of the box, typically setup with a standard liner and tip configuration suitable for common wire diameters.

Key Technical Specifications:

• Amperage Rating: 400 Amps (CO2), 300 Amps (Mixed Gas)
• Duty Cycle: 60%
• Cooling: Air Cooled
• Cable Length: 15 Feet
• Connection Type: Miller Direct Connect