Description

Schneider LRD32 | Thermal overload relay, TeSys LRD, 23…32 A, class 10A

Schneider LRD32 | Thermal Overload Relay

Overview

The Schneider LRD32 is a thermal overload relay from the TeSys LRD series, designed to provide reliable motor protection against overloads and phase failures. It is commonly used in industrial and commercial applications where motor safety and efficiency are critical.

Technical Specifications

1. General Information

  • Product Name: Schneider LRD32
  • Product Type: Thermal Overload Relay
  • Series: TeSys LRD
  • Manufacturer: Schneider Electric

         Product Range: TeSys LRD

  • Function: Thermal overload protection
  • Current Range: 23 – 32 A
  • Trip Class: 10A
  • Mounting Compatibility: TeSys LC1D contactors
  • Reset Mode: Manual and automatic reset
  • Auxiliary Contacts: 1 NO + 1 NC
  • Operating Voltage: Up to 690V AC
  • Certifications: IEC 60947-4-1, CE, UL

2. Design & Build

  • Compact and lightweight design
  • Easy-to-adjust current setting dial
  • Built-in stop/reset and test buttons for quick operation
  • Auxiliary contacts: 1 NO + 1 NC for control circuit feedback

3. Applications

  • Motor protection against overload and phase failure
  • Industrial automation systems
  • Pumps, fans, conveyors, and compressors
  • HVAC and process control applications

4. Advantages

  • Precise thermal protection to prevent motor damage
  • Quick and easy installation with TeSys D contactors
  • Reliable performance with high durability
  • Dual reset options for flexible operation

5. Conclusion

The Schneider LRD32 is a versatile thermal overload relay designed for motor protection in industrial applications. With its adjustable current range (23A–32A), Class 10A tripping, and compatibility with TeSys D contactors, it ensures efficient and reliable performance in various electrical systems.

Additional information

brands

Schneider Electric

Specifications

Main
Range TeSys TeSys Deca
Product name TeSys LRD TeSys Deca
Product or component type Differential thermal overload relay
Device short name LRD
Relay application Motor protection
Product compatibility LC1D32 LC1D25 LC1D38
Network type AC DC
Thermal overload class Class 10A conforming to IEC 60947-4-1
Thermal protection adjustment range 23…32 A
[Ui] rated insulation voltage Power 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 frequency 0...400 Hz
Mounting support Plate, with specific accessories Rail, with specific accessories Under contactor
Tripping threshold 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1
Auxiliary contact composition 1 NO + 1 NC
[Ith] conventional free air thermal current 5 A for signalling circuit
Permissible current 1.5 A at 240 V AC-15 for signalling circuit 0.1 A at 250 V DC-13 for signalling circuit
[Ue] rated operational voltage 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
Associated fuse rating 4 A gG for signalling circuit 4 A BS for signalling circuit
[Uimp] rated impulse withstand voltage 6 kV
Phase failure sensitivity Tripping current 130 % of Ir on two phase, the last one at 0
Control type Red push-button: stop Blue push-button: reset
Temperature compensation -20…60 °C
Connections - terminals Control 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 Power circuit: screw clamp terminals 1 cable(s) 1.5…10 mm² flexible without cable end Power circuit: screw clamp terminals 1 cable(s) 1…6 mm² flexible with cable end Power circuit: screw clamp terminals 1 cable(s) 1.5…10 mm² solid
Tightening torque Control circuit: 1.7 N.m - on screw clamp terminals Power circuit: 2.5 N.m - on screw clamp terminals
Height 66 mm
Width 45 mm
Depth 70 mm
Net weight 0.124 kg
Environment
Climatic withstand conforming to IACS E10
IP degree of protection IP20 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 retardance V1 conforming to UL 94
Mechanical robustness Vibrations: 6 Gn conforming to IEC 60068-2-6 Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7
Dielectric strength 1.89 kV at 50 Hz conforming to IEC 60947-1
Standards EN/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 certifications IEC UL CSA CCC EAC BV RINA DNV-GL LROS (Lloyds register of shipping) ATEX INERIS UKCA
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 5.500 cm
Package 1 Width 7.100 cm
Package 1 Length 8.000 cm
Package 1 Weight 140.000 g
Unit Type of Package 2 S02
Number of Units in Package 2 24
Package 2 Height 15.000 cm
Package 2 Width 30.000 cm
Package 2 Length 40.000 cm
Package 2 Weight 3.723 kg
Contractual warranty
Warranty 18 months

Main documents

Main documents

Datasheet Download Datasheet
Product datasheet Download
User guide
Download
Instruction sheet
Download
Catalogue
Download
CAD Files Download
Environmental disclosure
Download

Main documents

Datasheet Download Datasheet
Product datasheet Download
User guide
Download
Instruction sheet
Download
Catalogue
Download
CAD Files Download
Environmental disclosure
Download

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