Rockwell Automation Publication 193-UM015E-EN-P - October 2015 17
Chapter 1
Product Overview
Overview
The E300™ Electronic Overload Relay is a microprocessor-based electronic
overload relay that is designed to help protect three-phase or single-phase AC
electric induction motors that are rated from 0.5…65,000 A. Its modular design,
communication options, diagnostic information, simplified wiring, and
integration into Logix make the E300 relay the ideal overload for motor control
applications in an automation system. The E300 relay provides flexibility, reduces
engineering time, and maximizes uptime for important motor starter
applications.
Modular Design
You can select the specific options that you need for your motor starter
application. the E300 relay consists of three modules: sensing, control, and
communication. You can customize each of the three with accessories to tailor the
electronic motor overload for your application’s exact needs.
• Wide c
urrent range
• Sensing capabilities (Current, Ground Fault Current, and/or Voltage)
• Expansion I/O
• Operator interfaces
Communication Options
You can select from multiple communication options that integrate with Logix-
based control systems. Developers can easily add the E300 relay to Logix-based
control systems that use Integrated Architecture tools like Add-on Profiles, Add-
on Instructions, and Faceplates.
• E
therNet/IP device-level ring (DLR)
• DeviceNet