401428-005 - Tweco 1K Ohm 2-Watt Replacement Potentiometer

Precision Control for Professional Welding Equipment

The Tweco 401428-005 Potentiometer is a critical replacement component designed to restore the functionality and precision of your welding machinery. In the demanding world of industrial welding, the ability to fine-tune your settings—whether it be wire feed speed, voltage, or amperage—is paramount to achieving high-quality welds. Over time, the internal resistive tracks of potentiometers can wear down due to frequent adjustment, dust ingress, or electrical stress, leading to erratic machine behavior or 'dead spots' in your control dial. This genuine Tweco part ensures you can regain the smooth, linear adjustment necessary for professional fabrication.

Technical Specifications and Durability

Rated at 2 Watts and providing 1,000 Ohms (1K) of resistance, this potentiometer is engineered to handle the control circuit loads typical of heavy-duty welding power sources and wire feeders. The 2-watt power rating indicates a robust construction capable of dissipating heat more effectively than standard consumer-grade electronics, which is essential in the warm environments often found inside operating welding power sources. Its construction is designed to resist the vibration and minor mechanical shocks associated with shop environments, ensuring a long service life after installation.

Installation and Compatibility

As a genuine OEM part, the Tweco 401428-005 guarantees a perfect fit for compatible Tweco and ESAB equipment. Using genuine parts eliminates the guesswork associated with sourcing generic electronic components, where shaft length, diameter, or pin spacing might differ slightly. Replacing a faulty potentiometer is a cost-effective maintenance procedure that can extend the life of your expensive welding equipment, preventing the need for more costly control board replacements. Whether you are a maintenance technician or a fabricator performing your own repairs, this component provides the reliability you expect from the Tweco brand.

Symptoms of a Failing Potentiometer

If you notice that your welding machine's output fluctuates without input, or if the settings jump unpredictably when you turn the control knob, it is likely time to replace the potentiometer. A failing pot can cause inconsistent arc starts, variable wire feeding, or unstable voltage, all of which compromise weld quality. Installing this fresh 1K ohm potentiometer will eliminate signal noise and restore the tactile, responsive control required for precision welding tasks.