Xtrweld 415-3545M Mig Gun 400A 15ft Miller Rear .045

Product Description

The XTRWELD 415-3545M is a heavy-duty MIG welding gun rated at 400 amps, designed for professional welding applications where high amperage output and reliable wire feed are essential. Built with a Miller rear power pin connection, this gun integrates directly with Miller-backend wire feeders and power sources. It accepts wire sizes up to .045 inches and features a 15-foot cable assembly, giving welders working clearance without excess weight at the handle. The gun is compatible with Tweco-style consumables and liner, making replacement parts straightforward to source. At 11.8 pounds, it is suited for heavy fabrication and production welding environments where durability and duty cycle matter.

This MIG gun is intended for use in industrial, commercial, and heavy fabrication settings where 400-amp continuous or semi-continuous welding is required. The 15-foot lead length suits stationary welding benches, positioners, and applications where the operator needs moderate reach from the feeder. The Tweco consumable compatibility means contact tips, nozzles, and liners are widely available through standard welding supply channels. Licensed welding professionals and experienced fabricators installing or replacing guns on Miller-equipped wire feed systems will find this unit a direct-fit option.

Key Features

• 400-amp rating supports heavy-duty MIG welding applications
• Miller rear power pin connection for direct integration with Miller wire feeders
• Accepts wire sizes up to .045 inches for versatile material and process options
• 15-foot cable assembly provides working clearance from the feeder unit
• Compatible with Tweco-style consumables and liner for easy field replacement

Compatibility

Designed for use with Miller rear power pin wire feeders and power sources. Uses Tweco-style consumables and liner. Accepts wire up to .045 inches in diameter. No additional specific model compatibility data was provided in the product input.

Installation Notes

Installation and replacement of MIG guns should be performed by a qualified welder or welding technician. Always power down and disconnect the wire feeder from its power source before removing or installing the gun connection. Verify that the power pin style and feeder connection match before applying any tension to the cable assembly. Inspect the liner and consumables after installation to confirm proper wire feed path alignment before returning the system to service.

Technical Specifications

• Amperage Rating: 400 amps
• Cable Length: 15 feet
• Maximum Wire Size: .045 inches
• Power Pin Type: Miller Rear
• Consumable Compatibility: Tweco-style consumables and liner
• Weight: 11.8 pounds
• Unit of Measure: Each

Standard Information

• Brand: XTRWELD
• Manufacturer Part Number: 415-3545M