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951966 - ESAB 5µF 800VDC Replacement Capacitor

Packaging: pack of 1
$443.70/EA $265.84/pack of 1 only $265.84/EASave 40%

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OVERVIEW

Restore Your Welder's Power with the ESAB 951966 Capacitor

Is your ESAB welder acting up? Are you experiencing erratic arc starts, power fluctuations, or has your machine simply stopped turning on? The culprit could be a failed capacitor. The ESAB 951966 (5µF, 800VDC) is the genuine replacement part you need to get your equipment back in the fight. Capacitors are like the batteries of your welder's internal power supply—they store and smooth out electricity to ensure a steady flow of power to the torch. When they fail, your weld quality suffers, or the machine shuts down completely to protect itself.

Don't risk your expensive equipment by using cheap, generic electronic components found online. Welding machines operate under extreme stress, generating heat and electrical spikes that standard electronics aren't built to handle. This genuine ESAB part is designed to withstand the harsh environment of a fabrication shop, ensuring that your repair lasts. It is rated specifically for 800 Volts DC, meaning it handles the high-power loads required to melt metal day in and day out.

Signs your capacitor might be bad:

  • The machine powers on but won't strike an arc.
  • Visible bulging or leaking fluid from the capacitor body.
  • A burning electronics smell coming from the machine vents.
  • The machine trips breakers or blows fuses immediately upon startup.

Replacing a bad capacitor is often a cost-effective way to save a machine that would otherwise cost thousands to replace. Ensure you follow all safety protocols when installing this part, as capacitors can hold a charge even when unplugged. Get the right part the first time and keep your production line moving with this authentic ESAB replacement.

Additional Information
Brand:ESAB
Product Type:Capacitor
Capacitance:5 µF
Voltage Rating:800 VDC
Part Number:951966
Packaging Description:pack of 1

INCLUDED

  • 1 x ESAB 5µF 800VDC Capacitor (951966)

APPLICATIONS

  • Repair of ESAB welding power sources
  • Replacement of aged or failed DC link capacitors
  • Maintenance of inverter-based welding machines
  • Restoring power stability in industrial plasma cutters

FAQ

This is a 5 microfarad (µF) capacitor rated for 800 Volts DC (VDC).

Yes, this is the authentic ESAB part number 951966.

While possible, it is highly recommended to use the OEM part. Welding machines impose specific ESR and thermal stresses that generic capacitors may not handle, leading to premature failure.

Visual signs include bulging tops or leaking fluid. Electrical symptoms include the machine failing to power up, tripping breakers, or erratic arc performance.

Capacitors store high voltage even when the machine is unplugged. Only qualified technicians should perform this repair. Always discharge capacitors safely before touching them.

This part fits specific ESAB models. Please check your machine's parts manual or schematic to verify the part number 951966 is required.

Yes, as a DC capacitor, polarity must be observed during installation to prevent immediate failure or explosion.

Installing a polarized DC capacitor backwards can cause it to overheat, vent, or explode. Always mark your connections before removing the old part.