Allen-Bradley 193-EC1KH Electronic Overload Relay

Allen-Bradley 193-EC1KH is an E3 electronic motor protection relay designed to protect motors in the 125–630 A full-load current range, and it mounts directly to a contactor with integrated I/O for streamlined control. It features two inputs and a single output, enabling straightforward interfacing with sensing circuits and the contactor coil to provide reliable overload protection in industrial motor circuits. Rockwell Automation lists 193-EC1KH as discontinued as of October 31, 2019, with an engineering replacement recommended; the contemporary equivalent in the E3 Plus family is the 193-EC3KH, which covers the same 125–630 A range and retains direct-contactor mounting.