The ESAB 13734781 is a high-performance electromechanical contactor designed specifically for the rigorous demands of industrial welding equipment and heavy machinery. As a critical component in the power distribution system of a welding power source, this contactor manages the switching of high-current electrical power circuits. It features a 3-pole configuration, making it ideal for controlling three-phase power inputs or outputs, a common requirement in industrial MIG, TIG, and Stick welders.
The unit is engineered with a 24V control coil. This low-voltage coil allows the contactor to be safely operated by the machine's internal control boards or trigger switches without exposing the operator or sensitive electronics to the high main voltage. When energized, the coil creates a magnetic field that pulls the contacts closed, completing the circuit and allowing power to flow to the transformer or welding output. The 24V specification is a standard safety voltage in modern industrial equipment, ensuring broad compatibility with various control schemes.
Rated for a continuous load of 40 Amperes, this contactor is built to handle significant current flow without overheating. The contacts are manufactured from durable alloys designed to resist oxidation, pitting, and welding (sticking) during operation. This is crucial in welding applications where frequent cycling (switching on and off) occurs. Furthermore, the device is rated for up to 600VAC, providing a substantial safety margin for standard 208V, 230V, 460V, and 575V industrial power grids. This high voltage rating ensures that the contactor maintains dielectric isolation when open, preventing dangerous arcing or leakage current.
Maintenance professionals and technicians will appreciate the robust construction of the ESAB 13734781. It is designed for easy installation with standard mounting points and accessible terminal connections. Replacing a worn or failing contactor is a standard maintenance procedure that restores the reliability of the power source. Symptoms of a failing contactor can include buzzing noises (chatter), failure to latch, or welded contacts that keep the machine energized continuously. Installing this genuine specification part ensures that the machine operates within its original design parameters for safety and performance.
| Additional Information |
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| Packaging Description:pack of 1 |
| Amperage:40 A |
| Voltage:24 V, 600 V |
| Phase:3-Phase |
| Component Type:Contactor |
| Coil Voltage:24 V |
| ----- new values below ---- |
| Component Type:Contactor |
| Coil Voltage:24 V |
| Number of Poles:3 |
| Max Load Voltage:600 VAC |
| Amperage:40 A |
| Voltage:24 V, 600 V |
| Phase:3-Phase |
