Skip to Main Content
Canadian
Canadian owned and operated

Tweco 405278-015 Electrolytic Capacitor Replacement

$334.78/EA $229.23/pack of 1 only $229.23/EASave 32%

Usually ships within 3-5 business days

OVERVIEW

Restore Your Welder's Power with the Tweco 405278-015 Capacitor

Is your welding machine acting up? A failing capacitor is often the hidden culprit behind erratic arcs, hard starts, or power loss. The Tweco 405278-015 Electrolytic Capacitor is the genuine replacement part you need to get your machine back to peak performance. Capacitors act like temporary batteries for your welder's internal electronics, smoothing out the electrical current to ensure a consistent and buttery-smooth arc. Over time, these components can dry out, bulge, or leak, compromising the quality of your welds and potentially damaging your machine.

This "Excel" branded capacitor is the exact OEM part specified for compatible Tweco and thermal arc welding systems. Don't risk your expensive equipment with generic, unmatched electronic components that may not handle the voltage spikes or ripple currents inherent in welding. Installing the correct 405278-015 capacitor ensures that your machine's timing and power delivery circuits function exactly as the engineers intended. It is a small investment that can save you the cost of a full machine replacement or major board repairs down the line.

Safety Note: Replacing internal machine components involves working with high voltage. Capacitors can retain a lethal charge even after the machine is unplugged. We strongly recommend that installation be performed by a certified repair technician who understands how to safely discharge and handle electrolytic capacitors. Once installed, this high-quality component will help extend the life of your welder, giving you the reliability you expect from the Tweco brand. Get your machine back in the fight with the right parts from Welders Supply.

Additional Information
Brand:Tweco
Packaging Description:1 per each
Product Type:Electronic Component
Component Type:Electrolytic Capacitor
Part Number:405278-015
Application:Welding Machine Repair

INCLUDED

  • 1 x Electrolytic Capacitor (Excel Brand)

APPLICATIONS

  • Welding machine power supply repair
  • Inverter and transformer circuit maintenance
  • Voltage smoothing and filtering
  • Energy storage in power regulation circuits

FAQ

Common symptoms include the machine failing to turn on, a humming noise without output, erratic arc performance, or visible signs like bulging tops or leaking fluid on the capacitor itself.

No, capacitors have specific voltage and capacitance ratings. You must verify that part number 405278-015 matches the requirements of your specific machine model.

Installation should only be performed by a qualified technician. Capacitors store high-voltage electrical charge even when the machine is unplugged, posing a significant shock hazard.

The capacitor is manufactured by Excel and is supplied as a genuine OEM part by Tweco (ESAB) for their welding equipment.

Electronic repair parts typically have limited warranties once installed. Please check the specific warranty terms for Tweco replacement parts at the time of purchase.

It primarily functions to filter and smooth the DC voltage within the power supply, ensuring stable current delivery to the welding arc.

Check your welder's parts diagram or the markings on the existing capacitor. It should reference the part number 405278-015.
Google Rating
4.9
Based on35reviews
×
js_loader