0040980080 - ESAB 800A 60mV Current Shunt for A2/A6 Automation Heads

Precision Current Measurement for ESAB Automation

The ESAB 0040980080 Shunt is a specialized electrical component engineered to provide accurate current feedback within ESAB's renowned automatic welding systems. Designed with a rating of 800 Amperes and a voltage drop of 60 millivolts, this shunt serves as the critical interface between the high-current welding circuit and the sensitive process control electronics found in the A2 and A6 series equipment. In automated welding environments, particularly Submerged Arc Welding (SAW) and heavy-duty GMAW, the stability of the arc is entirely dependent on the control system's ability to monitor real-time amperage. This shunt ensures that the process controller receives a linear, temperature-stable signal, allowing for rapid corrections to wire feed speed or voltage to maintain the preset welding parameters.

Constructed from high-grade resistive alloys, the ESAB 800A/60mV shunt minimizes thermal drift, a common issue in lower-quality components that can lead to parameter "creep" as the machine heats up during long duty cycles. The physical dimensions and mounting points are machined to exact factory specifications, ensuring it fits seamlessly into the chassis of A2 Multitrac and A6 Mastertrac tractors or stationary welding heads. This eliminates the need for retrofitting or recalibrating the control unit, which would be necessary if a generic shunt with slightly different resistance characteristics were used.

For maintenance engineers and industrial electricians, replacing a damaged or drifted shunt is a key step in troubleshooting erratic welding performance. If your ESAB automation equipment is displaying fluctuating amperage readings or if the actual welding current does not match the setpoint, the shunt is often the component that requires verification. By installing this genuine ESAB part, you restore the closed-loop integrity of the welding system, ensuring that the sophisticated electronics can once again deliver the precision welds that ESAB equipment is known for.

This component is suitable for a wide range of heavy industrial applications where ESAB automation is utilized, including beam fabrication, pipe mills, and pressure vessel manufacturing. Its robust design ensures it can withstand the mechanical vibrations and electrical noise inherent in these demanding environments.