Schneider LRD332 | TeSys LRD thermal overload relays – 23…32 A – class 10A
LRD332 | TeSys LRD thermal overload relays – 23…32 A – class 10A
Description
Schneider LRD332 | TeSys LRD thermal overload relays – 23…32 A – class 10A
Schneider LRD332 | TeSys LRD Thermal Overload Relay, 23-32A, Class 10A
1. Introduction
The Schneider LRD332 is a thermal overload relay from the TeSys LRD series, designed to protect electric motors from overloads and phase failure. It features an adjustable current range of 23-32A and Class 10A tripping characteristics, making it ideal for industrial motor control applications. The relay is designed to be directly mounted onto TeSys LC1D contactors, ensuring seamless integration into motor starter circuits.
2. Key Features
- Adjustable Current Range: 23-32A
- Tripping Class: 10A (Fast response to overloads)
- Reset Options: Manual and automatic reset
- Phase Failure Protection: Prevents motor damage in case of phase loss
- Mounting Compatibility: Attaches directly to TeSys LC1D contactors
- Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
- Robust and Compact Design: Suitable for industrial environments
3. Technical Specifications
- Product Type: Thermal Overload Relay
- Series: TeSys LRD
- Current Adjustment Range: 23-32A
- 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 damage due to overheating
- Easy Installation: Mounts directly onto LC1D contactors
- Versatile Reset Options: Allows manual and automatic reset
- Compact & Space-Saving: Ideal for electrical panels
- Energy-Efficient & Durable: Reduces maintenance and downtime
6. Conclusion
The Schneider LRD332 is a reliable and efficient thermal overload relay designed for motor protection in industrial and commercial settings. With its adjustable 23-32A range, Class 10A tripping characteristics, and built-in phase failure protection, it is a cost-effective solution for ensuring motor safety and long-term performance.
Additional information
| brands | Schneider Electric |
|---|
Specifications
| 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 | LC1D40A LC1D65A LC1D50A |
| 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 |
| 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 | 0.95 A at 380 V AC-15 for signalling circuit 0.06 A at 440 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 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 torque | Control circuit: 1.7 N.m - on screw clamp terminals Power circuit: 5 N.m - on EverLink BTR screw connectors |
| Height | 123 mm |
| Width | 55 mm |
| Depth | 123 mm |
| Net weight | 0.375 kg |
| 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 | Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 Vibrations: 4 gn conforming to IEC 60068-2-6 |
| 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 DNV-GL RMRS EU-RO MR LROS (Lloyds register of shipping) ATEX INERIS UKCA |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 6.500 cm |
| Package 1 Width | 10.400 cm |
| Package 1 Length | 13.800 cm |
| Package 1 Weight | 393.000 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 13 |
| Package 2 Height | 15.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 5.394 kg |
| Unit Type of Package 3 | P06 |
| Number of Units in Package 3 | 208 |
| Package 3 Height | 75.000 cm |
| Package 3 Width | 60.000 cm |
| Package 3 Length | 80.000 cm |
| Package 3 Weight | 94.016 kg |
| Warranty | 18 months |
|---|
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