213421 - Miller 213421 Voltage Configuration Link Jumper

Restore Your Welder's Configuration with the Miller 213421 Jumper

If you are setting up your Miller welder and realize you are missing a voltage link, the Miller 213421 Jumper, Link Board is the exact part you need to get back up and running. Many industrial welders feature a "link board" under the cover that allows the user to adapt the machine to the shop's power supply—whether that is single-phase or three-phase, low voltage or high voltage. These small metal jumpers are the keys to that flexibility. Unfortunately, because they are small and removable, they are easily lost during service or when moving a machine from one location to another. Without them, your machine simply won't power on, or worse, could be damaged if configured incorrectly.

Don't be tempted to fashion a makeshift jumper out of copper wire or scrap metal. The Miller 213421 is designed with the correct thickness and hole spacing to handle the input current of your heavy-duty welding machine. A loose or improper connection at the voltage link board can cause arcing, which destroys the board and leads to expensive repairs far exceeding the cost of this simple part. This genuine Miller replacement drops right into place, ensuring a tight, secure fit that handles the vibration and thermal expansion typical in a welding environment.

This package contains one single jumper link. Depending on your specific machine and the voltage you are trying to achieve, you may need multiple jumpers arranged in a specific pattern (refer to the voltage diagram usually found on the inside of your welder's access door). Keeping a few of these 213421 jumpers in your spare parts bin is a smart move for any shop manager or welder who moves equipment frequently. Trust in the quality of Miller Electric components to keep your arc stable and your machine running safely for years to come.