Miller Deltaweld® MIG Welder #903377

Part Number: 903377

Discontinued - Check out other Miller MIG Welders

Out of Stock
Starts at $747.95/month with

Call 844-682-0205 or CHAT for more options

Welding type:



Power supply:

220V 3 Phase

220V 3 Phase



Material type:

Mild Steel

Mild Steel

Stainless Steel

Stainless Steel



  • MIG Welding
  • Multivoltage
  • Three Phase

Miller Deltaweld® 903377

Industry standard for industrial MIG welding. Designed for manufacturing operations, with 100 percent duty cycle for extended arc-on time.


Line Voltage Compensation
Ensures consistent weld performance even when primary power varies. 

Cooling system operates only when needed. Reduces contaminants drawn into the machine and excess noise in work areas. 

Easy to Read Digital Meters
Ensure accuracy when presetting and reading actual voltage and amperage.

14-pin Receptacle
Provides a quick, direct connection to Miller® wire feeders. Capable of remote voltage control.

115-VAC Power
To power tools and coolant systems.

Thermal Overload Protection
Light indicates power shutdown. Helps prevent machine damage if the duty cycle is exceeded or airflow is blocked. 

See our line of quality welding equipment or view our full selection of quality welding machines.



Deltaweld® 452 Specifications:

Industries Interests Aerospace
Heavy Equipment Manufacturing
Boat / Yacht
Current Type DC
Input Voltage 208 V
220/230/240 V
460/480 V
Input Phase 3-Phase
Input Hz 60 Hz
Portability Lift Eye (Standard)
Running Gear / Cart (Optional)
Net Height 30 in
Net Length 38 in
Net Weight 384 lbs
Weldable Metals Aluminum
Specialty Metals
Stainless Steel
Net Width 23 in
Rated Output 400 A at 38 VDC, 100% duty cycle
Warranty 3 Years
Miller's True Blue Warranty


Height: 24.00 Inches
Width: 33.00 Inches
Length: 40.00 Inches
Weight: 400 Lb(s) 0 Oz

Product Questions and Answers

Q - What running gear can be put on this? A - The Standard Running Gear (#042 886) with 10" rear wheels and 5" front casters.
Q - Is anything included with this? A - This is just the power source, but Welders Supply includes a free helmet and free gloves.

How to replace fuse F1:

  1. Disconnect input power.

    With power off, open rear access door.

  2. Remove fuse.

    Using 3/8” socket wrench, turn fuse holder cover counterclockwise to access fuse.

  3. Replace fuse.

    Pull out old fuse and insert new fuse with flat end of fuse in the fuse holder cover.

  4. Secure fuse holder.

    Rotate fuse holder cover clockwise to secure new fuse in place.

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