673085 - ESAB 673085 Replacement Micro Switch SPDT 15A

Technical Overview of the ESAB 673085 Micro Switch

The ESAB 673085 Micro Switch is a precision electromechanical component designed for critical control applications within industrial welding equipment. Engineered as a Single Pole Double Throw (SPDT) switch, it provides versatile circuit control capabilities, allowing for both Normally Open (NO) and Normally Closed (NC) configurations depending on the wiring requirements of the specific machine assembly. With a robust current rating of 15 Amperes and a voltage rating of 250 VDC, this switch is built to handle the substantial electrical loads often found in heavy-duty welding power sources and wire feeding systems.

Micro switches are integral to the safety and operation of welding machinery. They often serve as limit switches, trigger interlocks, or presence sensors that ensure the equipment operates only under safe and correct conditions. The ESAB 673085 features a snap-action mechanism, which ensures a rapid transfer of contacts regardless of the actuation speed. This characteristic minimizes arcing and contact wear, significantly extending the service life of the component. For maintenance, repair, and operations (MRO) professionals, using genuine OEM parts like the 673085 ensures dimensional accuracy and electrical compatibility, eliminating the risks associated with generic substitutes that may not meet the specific DC voltage requirements of ESAB equipment.

Installation of this component typically requires access to the internal control assemblies of the welder or wire feeder. The switch housing is designed to fit standard mounting points, and the terminals are engineered for secure connections, whether soldered or via quick-connect spades (depending on the specific harness implementation). When diagnosing equipment failures such as intermittent wire feeding or unresponsive triggers, the micro switch is a primary inspection point. Replacing a faulty unit with the ESAB 673085 restores factory-level reliability to the machine's control circuit.