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Product overview, Introduction, Description – Rockwell Automation 193-EC1_2_3_5, 193-ECPM,592-EC1_2_3_5 E3 and E3 Plus Solid-State Overload Relay User Manual User Manual

Page 11: Introduction description, Chapter

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Rockwell Automation Publication 193-UM002I-EN-P - December 2011

11

Chapter

1

Product Overview

Introduction

This chapter provides a brief overview of the features and functionality of the E3
Overload Relay.

Description

The E3 Overload Relay is a multi-function solid-state microprocessor-based
electronic overload relay for the protection of squirrel-cage induction motors
rated from 0.4…5,000 A. Four versions are available: the E3 model, EC1, and
E3Plus models EC2, EC3, and EC5.

Figure 1 - Front Panel Display (E3 Plus Overload Relay shown)

E3 PLUS

S1

S2

13 14 23 24 95 96 IT1 IT2

1 2 3 4 5 6

NETWORK
STATUS

OUT A

IN 1

IN 2

OUT B

IN 3

IN 4

MSD

LSD

TRIP
WARN

TEST/

RESET

D

S/N

FRN

4.XXX

1AOXXXXX

XXX

SER

Test/Reset Button

Voltage Input Module
Connection
(193/592 EC5 only)

Ground Fault
Sensor Input

Output & PTC
Terminals

NOTE: On model EC5
devices, terminals IT1 and
IT2 are marked 7 and
8, respectively.

LED Status

Indicators

Node Address Switches
(series B and later)

DeviceNet Port

Input

Terminals