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The ITW / Miller 4515-45-460 is an air-cooled handheld MIG (GMAW) gun featuring a Tweco Classic No. 4 style design. This 15-foot assembly is configured with a Miller-style rear connector for direct integration with Miller wire feeders and power sources. It is engineered for high-amperage industrial applications, utilizing a heavy-duty construction with a 60-degree swiveling conductor tube and a high-impact oval handle.
Features
Three-layer conductor tube construction featuring copper tube, silicon-resin glass insulator, and metal jacket
High-impact, crush-resistant special plastic handle composition
Silver-plated switch contacts with self-cleaning action engaged during every trigger cycle
Front and rear heavy-duty steel spring strain reliefs to prevent kinking
Field-repairable Cablehoz design requiring no additional connectors for maintenance
Balanced pivot point at handle center to reduce operator fatigue
Split-handle case for easy access to internal components and repairs
Dual ball-point screws to secure Cablehoz and conductor tube within the handle
Integrated gun hanger at the bottom of the handle for storage
Metal jacket conductor tube for enhanced heat dissipation
Specifications
Amperage Rating: 400 Amps
Duty Cycle: 60% at 400 Amps (CO2), 100% at 275 Amps (CO2)
Mixed Gas Duty Cycle: 10-50% reduction from CO2 rating
Cable Length: 15 feet (4.6 meters)
Wire Diameter Capacity: .045" (1.2 mm) standard; .035" (0.9 mm) to 1/16" (1.6 mm) range
Cooling Method: Air-cooled
Rear Connector: Miller-style direct plug
Conductor Tube Angle: 60 degrees
Conductor Tube Rotation: 360 degrees swivel
Handle Style: Classic No. 4 oval-shaped
Conduit Liners: 44 Series
Contact Tips: 14 Series
Nozzles: 21 Series (thread-on) or 24A Series (slip-on)
Weight: 10.3 lb (4.7 kg)
Applications
Heavy Industrial Fabrication
Structural Steel Welding
Shipbuilding and Large-scale Manufacturing
On-site Construction of heavy plate and structural members