Allen-Bradley 193-EIO-43-120 E300 Control Module

Allen-Bradley 193-EIO-43-120 E300 Control Module is a four-input, three-output I/O module designed for use with the E300 electronic overload relay family. Operating from 120 V AC, this I/O-only module expands the digital input and output capacity of an E300-based motor protection and control setup. It plugs into an E300 rack to provide four input lines for sensing devices and three output lines for control devices such as contactors or indicators. The 193-EIO-43-120 designation identifies its place in the E300 family: 193 series, EIO I/O, with 4 inputs and 3 outputs at 120 VAC. Typical applications include motor control centers, machine protection circuits, and other protection racks that require additional sensing and actuation points without a separate controller. By enlarging the I/O footprint within an E300 installation, this module supports more complex protection schemes—enabling more sensors to monitor motor conditions and more actuators to respond to protection events while maintaining compact rack layouts.