13735308 - ESAB 120VAC 20A DPDT Enclosed Replacement Relay

Technical Overview of the ESAB Enclosed DPDT Relay

The ESAB 13735308 is a high-specification electromechanical relay designed for demanding industrial environments. As a critical component in the control logic of welding power sources and auxiliary equipment, this relay features a Double Pole Double Throw (DPDT) configuration. This topology allows the device to simultaneously control two independent circuits, offering versatility in switching operations—whether for reversing polarity, toggling between power modes, or managing safety interlocks. The unit is housed in a protective enclosure, shielding the sensitive mechanical contacts from the ingress of conductive dust, metal shavings, and atmospheric contaminants often found in heavy fabrication facilities.

Electrically, the relay is actuated by a 120VAC coil, making it compatible with standard North American industrial control voltage lines. Upon energization, the coil generates a magnetic field that actuates the armature, switching the contacts with a robust snap-action mechanism. The contacts themselves are rated for 20 Amperes, providing substantial current-carrying capacity suitable for driving moderate loads such as cooling fans, water pumps, or larger contactor coils. The 20A rating ensures that the relay can handle inrush currents without welding the contacts, a common failure mode in underspecified components. This balance of control voltage compatibility and high-current throughput makes it an essential spare part for maintenance engineers troubleshooting power distribution issues within ESAB welding equipment.

Installation of the 13735308 requires attention to the pinout configuration to ensure correct circuit integration. The enclosed design not only protects the internals but also provides a degree of arc suppression and safety for technicians working near live circuits. By utilizing a dedicated DPDT relay of this caliber, operators ensure the longevity and reliability of their equipment's control systems, minimizing downtime caused by component fatigue or environmental fouling.