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Schneider LRD22 | Thermal overload relay, TeSys LRD, 16…24 A, class 10A
Schneider LRD22: Revolutionizing Overload Protection
it is a thermal overload relay designed to ensure reliable protection for electric motors by preventing damage caused by overloads and phase imbalances. As part of the Schneider Electric TeSys series, this relay is a trusted solution for safeguarding motor-driven applications in industrial and commercial settings.
Key Features
- Thermal Overload Protection
Protects motors from damage caused by overheating or prolonged overload conditions. - Adjustable Current Range
- Rated operational current: 10–14 A.
This flexibility makes it compatible with a wide range of motor capacities.
- Rated operational current: 10–14 A.
- Phase Failure Protection
Detects and reacts to phase loss or imbalance, ensuring optimal safety for three-phase motors. - Manual and Automatic Reset Options
Offers flexibility in recovery methods, tailored to application requirements. - Direct Mounting Capability
Can be easily installed on TeSys D or K series contactors, streamlining setup and reducing wiring. - Test and Stop Functions
Integrated testing and stopping options allow operators to verify functionality and troubleshoot with ease. - Compact and Modular Design
Fits seamlessly into control panels without occupying excessive space.
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Operational Current (Ie) | 10–14 A |
| Adjustment Range | 10–14 A |
| Reset Type | Manual/Automatic |
| Mounting Compatibility | TeSys D/K Contactors |
| Operating Temperature | -20°C to +60°C |
| Standards Compliance | IEC 60947-4-1 |
Applications
it a versatile relay suitable for various applications, including:
- Industrial Equipment
Protects motors in conveyors, presses, and assembly lines. - Water Management Systems
Ensures safe operation of pumps in municipal and industrial water systems. - HVAC Systems
Protects critical components such as compressors and blowers. - Manufacturing Plants
Safeguards motors in heavy-duty production equipment.
Benefits of the Schneider LRD22
- Enhanced Motor Protection
Prevents damage caused by overloads and ensures operational continuity. - Cost Savings
Reduces downtime and maintenance costs associated with motor failures. - Ease of Integration
Compatible with Schneider Electric’s TeSys series contactors, ensuring smooth setup. - Durability and Reliability
Designed for long-term use in challenging industrial environments.
Installation and Maintenance Tips
- Verify Compatibility
Confirm that the relay’s adjustable current range matches the motor specifications. - Follow Proper Wiring Procedures
Ensure secure and reliable electrical connections to prevent malfunctions. - Conduct Regular Tests
Periodically use the test function to check the relay’s responsiveness and calibration. - Maintain Environmental Standards
Install in clean, vibration-free areas for optimal performance.
| 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 | LC1D25 LC1D32 LC1D38 |
| Network type | DC AC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 16…24 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 | 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 |
| 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 |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 5.000 cm |
| Package 1 Width | 7.600 cm |
| Package 1 Length | 8.800 cm |
| Package 1 Weight | 143.000 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 | 3.731 kg |
| Unit Type of Package 3 | P06 |
| Number of Units in Package 3 | 384 |
| Package 3 Height | 80.000 cm |
| Package 3 Width | 80.000 cm |
| Package 3 Length | 60.000 cm |
| Package 3 Weight | 74.924 kg |
| Warranty | 18 months |
|---|
Main documents
| Datasheet | Download Datasheet |
| Product datasheet | LRD22 |
| Download | |
| Download | |
| Download | |
| CAD Files | Download |
| Download |
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