Allen-Bradley 193-1EFFD Overload Relay

Allen-Bradley 193-1EFFD Overload Relay is a three-pole electronic overload protection device from Rockwell Automation’s E100 family, designed to mount directly to Allen-Bradley 100-C30 through 100-C55 contactors. It provides adjustable overload trip protection for three-phase motors, with a current setting range of 11 to 55 amperes, enabling precise protection for a range of motor sizes and starting conditions. The unit supports both automatic and manual reset configurations, allowing selection of either auto-trip reset after a fault or a manual reset by the operator. When used with compatible 100-C contactors, it integrates into compact motor control circuits and is commonly applied to equipment such as conveyors, pumps, fans, and machine tools where reliable overload protection is required. The relay mounts as a direct replacement within the standard 3-pole contactor footprint, helping to simplify panel wiring and protection coordination alongside other safety devices. With its electronic sensing method, the 193-1EFFD provides fast, repeatable trip behavior within the rated current band, helping prevent motor damage due to overload while allowing easy field adjustment through accessible setting mechanisms.