Miller WC-115A Spool Gun Control Box with Contactor

Unlock Precision Aluminum Welding with the Miller WC-115A

For professional welders looking to expand their capabilities into aluminum fabrication without buying a brand-new dedicated power source, the Miller WC-115A Weld Control with Contactor is the ultimate problem solver. This robust control box acts as the brain between your existing welder and the industry-leading Spoolmatic® 15A or 30A spool guns. Whether you are running an older stick machine with Constant Current (CC) output or a modern MIG runner with Constant Voltage (CV), the WC-115A adapts seamlessly to provide the smooth wire feeding you need.

Versatility in the Shop and Field
The WC-115A is designed to work with what you have. It plugs into standard 115 VAC power, which is commonly available on wall outlets or the auxiliary power of engine drives. This means you can take your Spoolmatic gun to the field or move it around the shop with ease. The included 10-foot power cord gives you the flexibility to position the control box exactly where you need it, ensuring your workspace remains organized and efficient.

Superior Arc Control
Aluminum welding can be finicky, especially during arc starts. The WC-115A eliminates the headache of rough starts with its intelligent wire run-in and drive motor acceleration controls. These features regulate how fast the wire approaches the puddle when you pull the trigger, ensuring a crisp, clean start every time. By preventing the wire from stubbing or burning back to the tip, you save money on contact tips and spend more time welding and less time troubleshooting.

Safety and Convenience
The "A" in WC-115A stands for the inclusion of a contactor. This is a vital feature for any welder's peace of mind. The contactor ensures that the welding wire is not electrically hot until you actively pull the trigger on your spool gun. This prevents accidental flashes when setting up your work or maneuvering the gun in tight spaces. With the Miller WC-115A, you get a safer, more controlled, and highly reliable welding experience backed by Miller's reputation for industrial-grade quality.