Rockwell Automation Publication 193-UM015D-EN-P - February 2015 17
Product Overview Chapter 1
Module Description
The E300 Electronic Overload Relay is comprised of three modules. All three
modules are required to make a functional overload relay.
• Sensing Module
• Control Module
• Communication Module
Sensing Module
Figure 1 - Sensing Module
The sensing module electronically samples data about the current, voltage, power,
and energy that are consumed by the electric motor internal to the module. You
can choose from one of three varieties of the sensing modules depending on the
motor diagnostic information that is needed for the motor protection
application:
• Current Sensing
• Current and Ground Fault Current Sensing
• Current, Ground Fault Current, Voltage, and Power Sensing
The current ranges for each of three varieties of sensing module are as follows:
• 0.5…30 A
• 6…60 A
• 10…100 A
• 20…200 A
You can choose how the sensing module mechanically mounts inside the
electrical enclosure. The following mounting mechanisms are available for the
sensing module.
• Mount to the load side of an Allen-Bradley Bulletin 100 IEC Contactor
• Mount to the load side of an Allen-Bradley Bulletin 500 NEMA
Contactor
• DIN Rail / Panel Mount with power terminals
• Replacement DIN Rail / Panel Mount with power terminals for an
Allen-Bradley E3 Plus panel mount adapter
• DIN Rail / Panel Mount with pass-thru power conductors
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