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402421-002 - Tweco Replacement Indicator Light 402421-002

Packaging: pack of 1
$28.29/EA $17.70/pack of 1 only $17.70/EASave 37%

Usually ships within 3-5 business days

OVERVIEW

Restore Machine Diagnostics with Genuine OEM Parts

The Tweco 402421-002 Indicator Light is a critical replacement component designed for specific Thermal Arc and Tweco welding power sources. In an industrial environment, the ability to instantly verify machine status—whether it is power availability, thermal overload, or process engagement—is vital for both safety and efficiency. This OEM part guarantees compatibility and performance that matches the original factory specifications.

Over time, indicator lights can fail due to vibration, electrical surges, or simple longevity limits. A non-functioning indicator can mask serious issues, such as a machine entering thermal protection mode without the operator's knowledge. Replacing a faulty light with this genuine Tweco component ensures that your maintenance team and operators have clear, reliable visual feedback from the equipment.

Installation of the 402421-002 is straightforward for qualified technicians, designed to fit directly into the existing panel cutout and connect to the machine's wiring harness without modification. By choosing genuine parts, you avoid the risks associated with generic electrical components, such as incorrect voltage ratings or poor fitment, which can lead to further downtime.

Technical Reliability

Manufactured to meet the rigorous standards of ESAB/Tweco equipment, this indicator light assembly is built to withstand the heat and dust common in welding environments. It restores the original look and functionality of the machine's front panel interface.

Additional Information
Packaging Description:1 Per Ea, pack of 1
Product Type:Indicator Light
Part Type:Replacement Electrical Component
Application:Welding Machine Repair
Compatibility:Thermal Arc / Tweco Power Sources
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Part Type:Replacement Electrical Component
Application:Welding Machine Repair
Compatibility:Thermal Arc / Tweco Power Sources
Brand:Tweco
Product Type:Indicator Light
Packaging Description:1 Per Ea

INCLUDED

  • 1 x Indicator Light Assembly (402421-002)
  • Attached Leads/Connectors (if applicable)

APPLICATIONS

  • Replacement of burnt-out power indicators
  • Repair of thermal overload warning lights
  • Restoration of welding machine front panel functionality
  • Maintenance of Thermal Arc and Tweco power sources

FAQ

It is an indicator light used to display the status (such as power on or thermal overload) of a welding machine.

Yes, this is a genuine OEM replacement part manufactured by Tweco/ESAB.

No, it is specific to certain Thermal Arc and Tweco models. Please check your machine's parts manual for compatibility with part number 402421-002.

If the machine is functioning (fan running, welding output present) but the light is off, the indicator assembly is likely burnt out.

Installation involves accessing the internal wiring of the welder. It is recommended that a qualified technician perform the replacement to ensure safety.

Most OEM indicator assemblies come with the necessary leads or terminals for connection, but check the specific unit upon arrival.

It provides visual confirmation of the machine's state, which is crucial for diagnosing issues like overheating or power loss.

Typically, you will need a screwdriver to open the machine case and possibly pliers or a wrench to remove the retaining nut on the light.