Auto-Line Technology - Welding Power Source | MillerWelds

Get High-Quality Arcs from Virtually Any Power Source

Miller® power sources equipped with Auto-Line power management deliver consistent, powerful arcs using single-phase or three-phase electrical service from 110V to 575V* — even “dirty” power with dips and spikes.


* Range varies by model.

Maintain a Stable Arc

“Dirty” or inconsistent input power can exist in the field or in the shop — and it can affect welding arcs.

Without
With

Without

Voltage spikes/dips reach the inverter
and affect the arc.

With

Voltage spikes/dips are absorbed and
smoothed, protecting arc quality.

Work Anywhere

Sometimes, you don’t know what kind of AC power is available. With Auto-Line technology, it doesn’t matter.

Without
With

Without

If AC power doesn't match the machine,
you can't work.


240V
Power

480V
Machine

No
Work

With

Use virtually any AC power, including single-
and three-phase*.

*Primary power voltage ranges vary by power source.

Save Time and Money

Many machines need to be linked to AC power, which delays work and increases expenses.

Without
With

Without

Wait for an electrician and pay for their time.

With

No manual linking.
Just plug in and start welding.

Run More Machines

Auto-Line machines draw less primary amperage, so you can run more equipment on one circuit.

Without
With

Without

Fewer machines operate on one circuit,
limiting productivity.

With

More machines operate on one circuit,
so more work gets done.

Auto-Line Videos

Dirty Power? Discover Auto-Line Power Management Technology

Maintaining arc consistency with dirty input power can be difficult. Auto-Line™ power management technology alleviates this issue.

Auto-Line Technology Reduces Error and Maximizes Portability and Weld Quality

Wolfpack Motorsports relies on Auto-Line™ technology in their Dynasty® 280 DX for consistent welds around the shop.

Products with Auto-Line Technology