Miller® MigMatic® S400i is fully synergic MIG/MAG system featuring the unique Miller drive system for the highest level of wire feed performance and reliability. All modules are bespoke to the system and designed for trouble free, high productivity welding. Never before has it been so easy and straight forward to achieve excellent welding performance. Enjoy full control at all times.

Trigger program switch
Re-call up to 4 preset programs from the torch trigger (any standard MIG torch) for increased productivity on complex objects.

Full synergic MIG/MAG with presets
Synergic lines for all common wire/gas combinations with presets of start/stop parameters for optimal welds.

Miller robustness
ested and approved for heavy duty welding under the toughest conditions. Miller goes to extreme measures to ensure trouble free welding in any environment.

Wind Tunnel Technology™
Internal air flow that protects electrical components and PC boards from dirt, dust and debris, greatly improving reliability.

The toughest wire drive mechanism
The Miller unique 4-roll drive system will ensure trouble free wire feeding.

Ease of use and versatility
Large intuitive LCD panel for quick and precise setting of advanced weld parameters.

Energy efficient
The Fan-On-Demand™ power source cooling system operates only when needed, reducing the amount of contaminants pulled though the machine. The MigMatic® Cool is controlled and monitored by the power source and runs only when needed, reducing noise and the overall energy use.

Applications

• MIG/MAG (GMAW)
• Flux-cored (FCAW)

Industries Interests

• General industrial fabrication
• Construction
• Railcars
• Mobile machinery
• Shipbuilding

Technical Properties

Input Voltage	400 V
Input Phase	3 phases
Input Hz	50/60 Hz
Amperage Range	15 A – 400 A
Max. Output Amperage	440 A
Rated Output	400 A, 34 V at 80% duty cycle
Max Open Circuit Voltage	70 VDC
Net Weight	53 kg

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