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Description
Schneider LRD3363 | TeSys LRD thermal overload relays – 63…80 A – class 10A
The Schneider LRD3363 is a thermal overload relay designed to protect motors from overload and phase failure. As part of Schneider Electric’s trusted TeSys range, this relay is engineered for durability and efficiency, ensuring optimal motor performance in industrial and commercial settings.
Key Features
- Current Adjustment Range:
- Adjustable between 18 to 25A, providing tailored protection for motors of varying capacities.
- Trip Class:
- Features Class 10A tripping characteristics for rapid response to overload conditions.
- Integrated Protection:
- Protects against motor overheating, phase loss, and imbalance, ensuring extended motor life.
- Reset Functionality:
- Offers manual and automatic reset options to meet diverse application requirements.
- Compact and Modular Design:
- Fits seamlessly with TeSys D contactors for an integrated motor control solution.
- Test and Stop Functions:
- Equipped with built-in test and stop buttons for maintenance and system checks.
Applications
The LRD3363 is suitable for a variety of motor protection scenarios, including:
- Industrial Equipment:
Protects motors in manufacturing machinery, conveyor systems, and compressors. - HVAC Systems:
Ensures the reliability of pumps and fans in heating, ventilation, and air conditioning systems. - Automation Systems:
A key component for automated processes requiring precise motor control and protection.
Benefits
- Enhanced Motor Protection:
Prevents downtime and damage by effectively responding to overload and phase failures. - Flexibility:
Adjustable current settings make it versatile for various motor types. - Energy Efficiency:
Minimizes unnecessary tripping, optimizing motor performance. - Ease of Installation:
Simple to integrate with TeSys D contactors, reducing installation time.
Technical Specifications
| Specification | Details |
|---|---|
| Current Adjustment Range | 18 – 25A |
| Trip Class | 10A |
| Reset Options | Manual/Automatic |
| Phase Failure Sensitivity | Yes |
| Standards | IEC 60947-4-1 |
| Operating Temperature | -20°C to +60°C |
Installation and Maintenance
- Mounting:
Easily mounts on TeSys D contactors or panels. - Connection:
Clearly labeled terminals simplify wiring. - Testing:
Built-in test button enables regular system checks to ensure functionality.
Additional information
| brands | Schneider Electric |
|---|
Specifications
| Range | TeSys |
|---|---|
| Product name | TeSys LRD TeSys Deca |
| Product or component type | Differential thermal overload relay |
| Device short name | LRD |
| Relay application | Motor protection |
| Product compatibility | LC1D80 LC1D95 |
| Network type | DC AC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 63…80 A |
| [Ui] rated insulation voltage | Power circuit: 1000 V conforming to IEC 60947-4-1 Power circuit: 600 V conforming to CSA Power circuit: 600 V conforming to UL |
| 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 | 0.72 A at 500 V AC-15 for signalling circuit 0.06 A at 440 V DC-13 for signalling circuit |
| [Ue] rated operational voltage | 1000 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 conforming to IEC 60947-1 |
| 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 | Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² flexible without cable end Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² flexible with cable end Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² solid without cable end 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 |
| Tightening torque | Control circuit: 1.7 N.m - on screw clamp terminals Power circuit: 9 N.m - on screw clamp terminals |
| Height | 81 mm |
| Width | 70 mm |
| Depth | 115 mm |
| Net weight | 0.51 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 | 2.2 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 ATEX INERIS UKCA |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 8.000 cm |
| Package 1 Width | 9.000 cm |
| Package 1 Length | 12.000 cm |
| Package 1 Weight | 512.000 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 12 |
| Package 2 Height | 15.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 6.470 kg |
| Unit Type of Package 3 | P06 |
| Number of Units in Package 3 | 192 |
| Package 3 Height | 75.000 cm |
| Package 3 Width | 60.000 cm |
| Package 3 Length | 80.000 cm |
| Package 3 Weight | 114.468 kg |
| Warranty | 18 months |
|---|
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