167374 - Miller 8µF 400VDC Metallized Polypropylene Capacitor Replacement

Technical Overview of the Miller 167374 Capacitor

The Miller 167374 is a high-quality metallized polypropylene film capacitor designed specifically for use within Miller welding power sources and industrial equipment. Capacitors play a vital role in the electrical circuitry of welding machines, often utilized for phase shifting, filtering, or motor run applications depending on the specific machine architecture. This component features a capacitance of 8 microfarads (µF) and is rated for a direct current voltage (VDC) of 400 volts, making it suitable for the high-energy demands of industrial welding environments.

Constructed with metallized polypropylene film, this capacitor offers excellent self-healing properties and low dielectric absorption. The 10% tolerance rating ensures that the capacitance value remains within a specific range, providing consistent performance and stability for the connected electrical load. As an Original Equipment Manufacturer (OEM) part, the Miller 167374 is engineered to meet the exact electrical and physical specifications required by Miller Electric, ensuring seamless integration and longevity.

Failure to replace a degraded or open capacitor can lead to machine malfunction, including issues with arc stability, motor operation, or complete system failure. Technicians servicing Miller equipment should verify the part number against the machine's service manual to ensure this 8µF 400VDC unit is the correct replacement for the specific model being repaired.