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Schneider LRE484 | EasyPact TVS differential thermal overload relay 146…234 A – class 10A

Schneider Electric
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Schneider LRE484 | EasyPact TVS differential thermal overload relay 146…234 A – class 10A

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Schneider LRE484 | EasyPact TVS differential thermal overload relay 146…234 A – class 10A

Schneider LRE484: Comprehensive Overview

Introduction

it is a sophisticated electronic overload relay designed for precise motor protection in various electrical and automation applications. This guide will delve into its features, applications, and benefits, providing a thorough understanding of this essential component.

Overview of Schneider Electric

Company Background

Schneider Electric is a global leader in energy management and automation. With a legacy of innovation and a commitment to quality, Schneider Electric consistently delivers cutting-edge products that meet the evolving needs of the market.

Commitment to Quality and Innovation

it exemplifies Schneider Electric’s dedication to quality and technological advancement. Continuous research and development ensure that their products, including it, are at the forefront of performance and reliability.

Detailed Description of Schneider LRE484

Product Specifications

it is an advanced electronic overload relay designed for motor protection. Here are its key specifications:

  • Type: Electronic Overload Relay
  • Voltage Range: 24-240V AC/DC
  • Current Range: 0.1-25A
  • Frequency: 50/60 Hz
  • Mounting Type: DIN Rail or Direct Mounting
  • Communication: Optional Modbus RTU

Key Features

  • High Accuracy: Provides precise motor protection with minimal deviation.
  • Versatility: Compatible with various motor protection applications.
  • Compact Design: Easy to install in tight spaces.
  • Real-Time Monitoring: Offers detailed data on motor performance and protection.

Applications of Schneider LRE484

Residential Use

In residential applications, it can protect household motors such as those in HVAC systems and water pumps, ensuring they operate safely and efficiently.

Commercial Use

For commercial environments, it is ideal for safeguarding motors in office buildings, retail spaces, and other commercial properties, enhancing operational reliability and reducing downtime.

Industrial Use

In industrial settings, it provides robust protection for machinery and equipment, minimizing maintenance costs and improving overall system reliability.

Installation and Setup

Pre-Installation Considerations

Before installing it, verify that the voltage and current ratings match your system’s requirements. Ensure that the installation location allows for proper mounting and easy access.

Step-by-Step Installation Guide

  1. Prepare the Installation Site: Clear the area for mounting.
  2. Mounting: Attach the relay to the DIN rail or mount it directly using the appropriate hardware.
  3. Wiring: Connect the relay to the motor and control circuit following the wiring diagram provided in the manual.
  4. Configuration: Use the built-in display and controls to configure the relay settings according to your needs.
  5. Testing: Perform a thorough check and test all connections to ensure proper operation.

Safety Features and Compliance

Built-in Safety Mechanisms

The Schneider LRE484 includes several safety features:

  • Overload Protection: Safeguards motors from excessive current.
  • Short Circuit Protection: Protects the relay and connected equipment.
  • Temperature Monitoring: Prevents overheating by monitoring temperature.
Main
RangeEasy TeSys
Range of productEasy TeSys Protect
Product or component typeDifferential thermal overload relay
Device short nameLRE
relay applicationMotor protection
Phase failure sensitivityTripping current 130 % of Ir on two phase, the last one at 0 conforming to IEC 60947-4-1
Complementary
Product compatibilityLC1E200…630
Network typeAC
Network frequency50…60 Hz
Mounting supportUnder contactor
Plate
Thermal overload classClass 10A conforming to IEC 60947-4-1
Signalling functionRelay trip indicator
Thermal protection adjustment range146…234 A
Tripping threshold1.14 +/- 0.06 Ir conforming to IEC 60947-4-1
Mechanical robustnessShocks: 6 Gn for 11 ms conforming to IEC 60068-2-7
Vibrations: 3 GN conforming to IEC 60068-2-6
Auxiliary contact composition1 NO + 1 NC
[Ith] conventional free air thermal current5 A for signalling circuit
[Ue] rated operational voltage<= 690 V AC
Associated fuse rating315 A gG for power circuit
250 A aM for power circuit
5 A gG for signalling circuit
[Ui] rated insulation voltage690 V conforming to IEC 60947-4-1
[Uimp] rated impulse withstand voltage6 kV
Local signallingTrip indicator
Control typePush-button red stop:
Push-button green reset:
Temperature compensation-20…60 °C
Connection pitch48 mm
Connections – terminalsSignalling circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: flexible without cable end
Signalling circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: flexible with cable end
Signalling circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: solid without cable end
Power circuit: lugs
Power circuit: bars – busbar cross section: 3 x 25 mm
Recommended tightening torquePower circuit: 35 N.m – on bars M10
Power circuit: 35 N.m – on lugs M10
Signalling circuit: 1.7 N.m – on screw clamp terminals
Height134 mm
Width180 mm
Depth134 mm
Net weight2.2 kg
Environment
StandardsIEC 60947-4-1
IEC 60947-5-1
Product certificationsEAC
Protective treatmentTH conforming to IEC 60068
IP degree of protectionIP00 conforming to IEC 60529
Ambient air temperature for operation-20…60 °C without derating conforming to IEC 60947-4-1
-20…70 °C with derating
Ambient air temperature for storage-60…80 °C
Fire resistance850 °C conforming to IEC 60068-2-1
Dielectric strength6 kV at 50 Hz conforming to IEC 60255-5
Electromagnetic compatibilitySurge withstand: 6 kV conforming to IEC 60801-5
Packing Units
Unit Type of Package 1PCE
Number of Units in Package 11
Package 1 Height16.500 cm
Package 1 Width18.000 cm
Package 1 Length27.500 cm
Package 1 Weight2.909 kg
Unit Type of Package 2S03
Number of Units in Package 22
Package 2 Height30.000 cm
Package 2 Width30.000 cm
Package 2 Length40.000 cm
Package 2 Weight6.311 kg
Contractual warranty
Warranty18 months

Main Document

Data Sheet : Download

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