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278447 - Miller XMT 304 CC/CV 230/460 Replacement Circuit Board

Packaging: 1 PER EA
$54.03/EA $33.29/1 PER EA only $33.29/EASave 38%

Usually ships within 3-5 business days

OVERVIEW

Restore Your XMT 304 with the Miller 278447 Replacement Board

The Miller XMT 304 CC/CV is legendary in the welding industry for its versatility and reliability, often referred to as the "workhorse" of the shop. However, even the toughest machines require maintenance. If your XMT 304 (230/460V model) is experiencing control issues or power failures, the Miller 278447 Circuit Board is the correct OEM replacement part to get you back up and running. This board is critical for the multiprocess capabilities of the XMT series, handling everything from Stick and TIG to MIG and Flux-Cored welding.

Welding environments are harsh, filled with conductive dust, metal shavings, and fluctuating temperatures. Over time, these factors can impact sensitive electronic components. The Miller 278447 is manufactured with protective coatings and robust architecture designed to resist these environmental stressors better than non-OEM alternatives. By choosing this authentic Miller part, you are ensuring that your welder continues to deliver the smooth, stable arc that the XMT series is famous for.

Key Benefits of the 278447 Board

  • Exact Fitment: Designed specifically for the chassis and wiring harness of the XMT 304 CC/CV 230/460V units, eliminating the need for modifications during installation.
  • Process Reliability: Restores full control over voltage and amperage settings, ensuring your welds meet code requirements.
  • Long-Term Value: Repairing a high-quality inverter like the XMT 304 is often far more cost-effective than replacing the entire unit. This board extends the service life of your capital equipment.

Don't let a fried board stop production. Whether you are running a fabrication line or a field repair truck, having a reliable power source is non-negotiable. The Miller 278447 Circuit Board is the direct replacement you need to resolve error codes or output failures associated with the main control circuitry. Ensure your serial number matches the compatibility requirements for this board before ordering to guarantee a successful repair.

Additional Information
Brand:Miller
Voltage:230/460 V
Packaging Description:pack of 1
Compatible Machine:Miller XMT 304 CC/CV
Part Type:Circuit Board Assembly
Phase:1/3 Phase

INCLUDED

  • 1 x Miller 278447 Circuit Board Assembly
  • 1 x Installation Instructions (if applicable)

APPLICATIONS

  • Repair and refurbishment of Miller XMT 304 CC/CV Welding Machines
  • Restoring functionality to 230/460V industrial power sources
  • Maintenance of multi-process inverter welding fleets
  • Fixing issues related to arc instability or lack of output in XMT units

FAQ

No, this specific board (278447) is designed for the XMT 304 CC/CV models operating on 230/460 voltages. Always verify your machine's serial number and voltage specs before ordering.

OEM parts typically come with basic diagrams or instructions, but it is assumed that a qualified technician with access to the Miller service manual will be performing the installation.

We highly recommend that only certified repair technicians install this board. Inverter welders contain high-voltage capacitors that can be dangerous even when unplugged.

Symptoms can include no welding output, erratic arc characteristics, inability to adjust voltage/amperage, or specific help codes displayed on the machine's front panel.

This is a brand new, genuine Miller Electric OEM product. We do not sell refurbished circuit boards.

Likely not. The 230/460V designation suggests it is specific to that input power range. You should consult the parts breakdown for the 575V model to ensure accuracy.

Miller OEM replacement parts typically carry a warranty against manufacturing defects. Please contact our support team for specific warranty terms regarding electronic repair parts.