278986 - Miller 278986 400A Current Transducer Module (+/- 15V)

Restore Precision with the Miller 278986 Transducer

The Miller 278986 Transducer is a high-performance current sensing module rated for 400 Amps, designed to provide accurate feedback to the control systems of Miller welding power sources. This component plays a pivotal role in the closed-loop control system of the welder. By continuously measuring the actual welding current and sending a signal back to the main control board, the transducer allows the machine to adjust its output dynamically. This ensures that the welder delivers exactly the amperage set by the operator, regardless of minor fluctuations in arc length or input power.

Technical specifications for this unit include a current rating of 400A and a supply voltage requirement of +/- 15V. These specifications indicate it is built for robust industrial machines that demand high-duty cycles and precise control. A failing transducer can lead to a variety of issues, including unstable arcs, inability to hold a set amperage, or error codes related to output sensing. Replacing a faulty sensor with the authentic Miller 278986 ensures that the feedback loop is restored to its original accuracy.

At Welders Supply, we understand that downtime costs money. That is why we supply genuine Miller Electric replacement parts to help you troubleshoot and repair your equipment efficiently. This module is a direct replacement for the original part found in specific Miller equipment. Please verify your machine's serial number and parts manual to ensure this is the correct transducer for your model. Investing in genuine parts protects your equipment investment and ensures the high-quality weld output you expect from the Miller brand.

Technical Features:

• High Current Capacity: Rated for continuous monitoring of up to 400 Amps.
• Dual Voltage Supply: Operates on a standard +/- 15V control circuit supply.
• Precision Sensing: Low drift and high accuracy for consistent weld quality.