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277164 - Miller 1800uF 500VDC Electrolytic Welding Capacitor

Packaging: 1 PER EA
$311.19/EA $219.12/1 PER EA only $219.12/EASave 30%

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OVERVIEW

Restore Your Welder's Performance

Is your Miller welder acting up? A failing capacitor can be the silent culprit behind a host of welding issues, from a stuttering arc to a machine that simply won't output full power. The Miller 277164 Capacitor is the authentic replacement part you need to get your machine back in the fight. Rated at 1800 µF and 500 VDC, this heavy-duty electrolytic capacitor is the heart of your welder's power smoothing system. It acts like a battery for your arc, storing energy to fill in the gaps and keeping your voltage steady even when you are pushing the machine to its limits.

When capacitors age, they can leak, bulge, or simply lose their ability to hold a charge. This degradation puts extra stress on other expensive components like IGBTs or diodes. Replacing a worn capacitor with this genuine Miller part is a cost-effective way to extend the life of your welder and avoid more catastrophic failures down the road. The 2.52-inch diameter ensures it drops right into the factory mount, making the repair process straightforward for qualified technicians. Don't risk your weld quality or your machine's safety with mismatched generic parts; stick to the specs that Miller intended.

This capacitor is built to handle the heat and electrical spikes of a workshop environment. Whether you are troubleshooting an error code or fixing a machine that just doesn't "feel" right, swapping out old capacitors is a standard repair step. With the Miller 277164, you are getting a fresh, high-spec component that restores the smooth, buttery arc characteristic Miller is famous for. Get your equipment running like new and minimize downtime with this essential repair part.

Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Capacitance:1800 µF
Voltage Rating:500 VDC
Diameter:2.52 in
Component Type:Electrolytic Capacitor
Construction:Can

INCLUDED

  • (1) Capacitor, Electric 1800 µF 500 VDC

APPLICATIONS

  • Replacement of main DC bus capacitors in Miller welding power sources.
  • Repair of welding machines exhibiting unstable arcs or power loss.
  • Preventative maintenance for aging industrial welding equipment.
  • Restoration of power smoothing circuits in rectifier assemblies.

FAQ

The Miller 277164 is an electrolytic capacitor rated at 1800 µF (microfarads) and 500 VDC (Volts DC) with a diameter of 2.52 inches.

Symptoms of a bad capacitor can include a humming noise, visible bulging or leaking fluid from the capacitor, a weak or unstable welding arc, or the machine failing to turn on.

Yes, this is a genuine OEM Miller Electric replacement part, ensuring guaranteed compatibility and performance with your Miller equipment.

Capacitor replacement involves high voltage and stored energy. It should only be performed by a qualified technician who knows how to safely discharge capacitors before removal to prevent electric shock.

The capacitor has a diameter of 2.52 inches, which is a standard size for the mounting clamps in compatible Miller machines.

The 500 VDC rating ensures the capacitor can handle the high internal voltages of the welding machine without failing. Using a capacitor with a lower voltage rating can result in immediate failure or explosion.

Typically, this part number includes the capacitor itself. You will usually reuse the existing mounting bracket and screws from your machine.

This capacitor fits various Miller power sources. We recommend checking your machine's parts manual or verifying with your serial number to ensure fitment.