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Schneider LRD325 | TeSys LRD thermal overload relays - 17...25 A - class 10A

Schneider LRD325 | TeSys LRD thermal overload relays – 17…25 A – class 10A

Schneider Electric
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LRD325 | TeSys LRD thermal overload relays – 17…25 A – class 10A

3,975.24 EGP 7,361.55 EGP

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Schneider LRD325 | TeSys LRD thermal overload relays – 17…25 A – class 10A

Schneider LRD325 | TeSys LRD Thermal Overload Relay, 17-25A, Class 10A

1. Introduction

The Schneider LRD325 is a thermal overload relay from the TeSys LRD series, designed to protect electric motors from overloads and phase failure. With an adjustable current range of 17-25A and Class 10A tripping characteristics, this relay ensures efficient motor protection and enhances system reliability. It is designed to be directly mounted onto TeSys LC1D contactors, allowing easy integration into motor control systems.

2. Key Features

  • Adjustable Current Range: 17-25A
  • Tripping Class: 10A (Fast response to overloads)
  • Reset Options: Manual and automatic reset
  • Phase Failure Protection: Prevents motor damage due to phase loss
  • Mounting Compatibility: Attaches directly to TeSys LC1D contactors
  • Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
  • Compact and Durable: Designed for industrial environments

3. Technical Specifications

  • Product Type: Thermal Overload Relay
  • Series: TeSys LRD
  • Current Adjustment Range: 17-25A
  • Tripping Class: 10A
  • Reset Mode: Manual/Automatic
  • Phase Failure Protection: Yes
  • Number of Auxiliary Contacts: 1 NO + 1 NC
  • Mounting Type: Direct attachment to LC1D contactors
  • Compliance: IEC 60947-4-1

4. Applications

  • Motor overload protection
  • Industrial automation systems
  • Pumps, fans, compressors, conveyors
  • HVAC systems
  • Power distribution panels

5. Benefits

  • Reliable Motor Protection: Prevents overheating and damage
  • Easy Installation: Mounts directly onto LC1D contactors
  • Versatile Reset Options: Supports both manual and automatic reset
  • Compact & Space-Saving: Optimized for electrical panels
  • Energy-Efficient & Durable: Reduces downtime and maintenance costs

6. Conclusion

The Schneider LRD325 is a high-performance thermal overload relay that provides reliable and efficient motor protection. With its adjustable 17-25A range, Class 10A tripping characteristics, and built-in phase failure protection, it is an excellent choice for ensuring safe and long-lasting motor operation in industrial applications.

SKU: LRD325 Category: Tag: Brand:
Main
RangeTeSys
TeSys Deca
Product nameTeSys LRD
TeSys Deca
Product or component typeDifferential thermal overload relay
Device short nameLRD
Relay applicationMotor protection
Product compatibilityLC1D40A
LC1D65A
LC1D50A
Network typeDC
AC
Thermal overload classClass 10A conforming to IEC 60947-4-1
Thermal protection adjustment range17…25 A
[Ui] rated insulation voltagePower circuit: 600 V conforming to CSA
Power circuit: 600 V conforming to UL
Power circuit: 690 V conforming to IEC 60947-4-1
Complementary
Network frequency0…400 Hz
Mounting supportPlate, with specific accessories
Rail, with specific accessories
Under contactor
Tripping threshold1.14 +/- 0.06 Ir conforming to IEC 60947-4-1
Auxiliary contact composition1 NO + 1 NC
[Ith] conventional free air thermal current5 A for signalling circuit
Permissible current0.95 A at 380 V AC-15 for signalling circuit
0.06 A at 440 V DC-13 for signalling circuit
[Ue] rated operational voltage690 V AC 0…400 Hz for power circuit conforming to IEC 60947-4-1
Associated fuse rating4 A gG for signalling circuit
4 A BS for signalling circuit
[Uimp] rated impulse withstand voltage6 kV
Phase failure sensitivityTripping current 130 % of Ir on two phase, the last one at 0
Control typeRed push-button: stop
Blue push-button: reset
Temperature compensation-20…60 °C
Connections – terminalsControl circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible without cable end
Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible with cable end
Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² solid without cable end
Power circuit: EverLink BTR screw connectors 1 cable(s) 1…35 mm² flexible without cable end
Power circuit: EverLink BTR screw connectors 1 cable(s) 1…35 mm² flexible with cable end
Power circuit: EverLink BTR screw connectors 1 cable(s) 1…35 mm² solid without cable end
Tightening torqueControl circuit: 1.7 N.m – on screw clamp terminals
Power circuit: 5 N.m – on EverLink BTR screw connectors
Height70 mm
Width55 mm
Depth123 mm
Net weight0.375 kg
Environment
Climatic withstandconforming to IACS E10
IP degree of protectionIP20 conforming to IEC 60529
Ambient air temperature for operation-20…60 °C without derating conforming to IEC 60947-4-1
Ambient air temperature for storage-60…70 °C
Flame retardanceV1 conforming to UL 94
Mechanical robustnessShocks: 15 Gn for 11 ms conforming to IEC 60068-2-7
Vibrations: 4 gn conforming to IEC 60068-2-6
Dielectric strength1.89 kV at 50 Hz conforming to IEC 60947-1
StandardsEN/IEC 60947-4-1
EN/IEC 60947-5-1
UL 60947-4-1
UL 60947-5-1
CSA C22.2 No 60947-4-1
CSA C22.2 No 60947-5-1
GB/T 14048.4
GB/T 14048.5
EN 50495
Product certificationsIEC
UL
CSA
CCC
EAC
DNV-GL
RMRS
EU-RO MR
LROS (Lloyds register of shipping)
ATEX INERIS
UKCA
Packing Units
Unit Type of Package 1PCE
Number of Units in Package 11
Package 1 Height6.000 cm
Package 1 Width11.000 cm
Package 1 Length14.000 cm
Package 1 Weight390.000 g
Unit Type of Package 2S02
Number of Units in Package 213
Package 2 Height15.000 cm
Package 2 Width30.000 cm
Package 2 Length40.000 cm
Package 2 Weight5.424 kg
Unit Type of Package 3P06
Number of Units in Package 3208
Package 3 Height75.000 cm
Package 3 Width60.000 cm
Package 3 Length80.000 cm
Package 3 Weight96.900 kg
Contractual warranty
Warranty18 months

Main documents

DatasheetDownload Datasheet
Product datasheetLRD325
User guide
Download
Instruction sheet
Download
Catalogue
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CAD FilesDownload
Environmental disclosure
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