99W82 - ESAB Replacement Relay SPST 120VAC 20A

Genuine ESAB 99W82 SPST Relay for Industrial Welding Equipment

The ESAB 99W82 is a high-quality electromechanical relay designed specifically for use within ESAB welding power sources and industrial equipment. As a genuine OEM (Original Equipment Manufacturer) component, this relay guarantees strict adherence to the engineering specifications required for the safe and efficient operation of your machinery. Relays are critical control components in welding circuits, often responsible for managing power distribution to fans, gas solenoids, or main contactor coils. Using the correct replacement part is essential to maintain the integrity of the machine's electrical system and prevent downstream damage to more expensive circuit boards.

Technically, this unit features a Single Pole Single Throw (SPST) configuration, meaning it controls a single circuit with a simple on-off switching mechanism. It is rated for a coil voltage of 120VAC, a common control voltage in industrial environments, and can handle a load current of up to 20 Amperes. This substantial amperage rating allows it to switch significant loads reliably without overheating or contact welding. The construction of the relay is robust, designed to withstand the thermal cycling and vibration often present in heavy-duty welding environments. When a relay fails, it can lead to intermittent machine faults, failure to start, or loss of specific functions like wire feeding or shielding gas flow.

Replacing a faulty relay with the ESAB 99W82 ensures that the timing, resistance, and current handling capabilities match the original design intent of the welder. Generic relays may physically fit but often lack the specific coil resistance or contact material quality required for long-term durability in arc welding applications. This part is supplied as a single unit and is ready for installation by qualified maintenance personnel. Whether performing preventative maintenance or emergency repairs, relying on genuine ESAB parts like the 99W82 is the professional choice for minimizing downtime and maximizing equipment lifespan.