SubArc DC Digital - Welding Power Sources | MillerWelds

SubArc DC 650 Digital

Digital Series of power sources, interface controls and accessories include digital control and communication electronics designed to improve weld performance and simplify the integration of the equipment in more advanced applications.

DC 650

DC 800

DC 1000

DC 1250


Miller's SubArc DC Series
Miller's SubArc DC Series, transformer/rectifier power sources combine high efficiency with the highest reliability. These machines feature a highly reliable thyristor power regulation. Newly designed digital control and communication electronics improve weld performance and simplify the integration of the equipment in more advanced applications.
Low-voltage accessory operation and improved environmental protection
The new Digital Series accessories are powered with 24 VAC control voltage from the power source. All power sources, interface controls and wire drives are IP-23 rated providing a high level of protection for harsh environments.
Easy paralleling
Easy Paralleling of two machines to increase maximum welding current is simply done by connecting the paralleling cable from the first unit to the second unit. Daisy chaining multiple machines to gain higher output is done in the same way. No special tools, laptop or software needed... plug and play.
Easy-to-understand interface
The easy-to understand interface provides the operator with the necessary controls to set process parameters and control output.
Improved flux delivery system
Our new SubArc Flux Hopper utilizes a flux valve mechanism that assures continuous delivery of flux to the arc. The unique valve design provides a barrier between the flux and actuation device to prevent jamming of the solenoid actuator due to dust and debris. A sight glass is provided on the front of the flux hopper allowing the weld operator to visually monitor the remaining flux in the hopper.
Insight Core™ Capable
Insight Core™ is a flexible, internet-based industrial welding information management solution that can help your operation be more competitive and profitable by delivering accurate, decision-ready information about welding processes.   Learn More
Easier setup and operation
The SubArc Digital Series Interface controls recognize the power source and wire drive connected, and automatically configure the system for proper operation.
Easy to integrate
Our new SubArc power sources are easy to integrate by using a standard Modbus® connection. Different levels of integration are possible, from simple remote operation to more complex automated systems.



Air Carbon Arc Cutting and Gouging (CAC-A)
Electroslag (ESW)
Submerged Arc (SAW)

General Specifications

Title SubArc DC 650 Digital
Industries Interests Shipbuilding
Rated Output 650 A at 44 V, 100% Duty Cycle
Weldable Metals Stainless Steel
Input Voltage 220/230/240 V
460/480 V
575 V
Rated Carbon Diameter 3/8 in (9.5 mm)
Input Phase 3-Phase
Input Hz 60 Hz
Current Type DC
Portability Lift Eye (Standard)
Weld Output CC / CV
Applications Fabrication
Pressure Vessel
Net Width 23 in
Net Height 30 in
Net Length 38 in
Net Weight 593 lbs
Warranty 3 Years
Miller's True Blue Warranty