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Schneider LRD3365 | TeSys LRD thermal overload relays – 80…104 A – class 10A
The Schneider LRD3365 is a high-performance thermal overload relay designed for effective motor protection. As part of Schneider Electric’s renowned TeSys range, this relay ensures reliability, precision, and safety in motor control applications. Its advanced features make it a trusted choice for industrial and commercial environments.
Key Features
- Current Adjustment Range:
- Adjustable between 23 to 32A, allowing for tailored protection for different motor capacities.
- Trip Class:
- Offers Class 10A tripping characteristics, ensuring fast and effective response to overloads.
- Overload and Phase Failure Protection:
- Safeguards motors against overheating, phase loss, and imbalance, minimizing the risk of damage.
- Manual and Automatic Reset Options:
- Flexibility to switch between manual and automatic reset modes based on operational requirements.
- Compact and Modular Design:
- Compatible with TeSys D contactors for streamlined integration into motor control systems.
- Test and Stop Buttons:
- Facilitates easy testing and manual stopping of the motor for maintenance and troubleshooting.
Applications
The LRD3365 is ideal for a wide array of motor protection applications, such as:
- Industrial Equipment:
Protection for motors in conveyor systems, compressors, and machine tools. - HVAC Systems:
Ensures uninterrupted operation of fans and pumps in heating, ventilation, and cooling systems. - Automated Systems:
A critical component in automation processes requiring reliable motor control and protection.
Benefits
- Superior Protection:
Prevents damage to motors by detecting and addressing overload conditions promptly. - Versatile Use:
Accommodates motors across various industries with its adjustable current range. - Energy Efficiency:
Reduces unnecessary tripping, optimizing motor operation and system uptime. - Ease of Integration:
Designed to pair seamlessly with Schneider’s contactors for a compact, unified solution.
Technical Specifications
| Specification | Details |
|---|---|
| Current Adjustment Range | 23 – 32A |
| 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
- Installation:
Mounts directly onto TeSys D contactors or can be standalone panel-mounted. - Connection:
Clear terminal markings simplify wiring. - Testing and Maintenance:
Test functionality periodically using the built-in test button to ensure reliable operation.
| 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 | LC1D95 LC1D80 |
| Network type | AC DC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 80…104 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 | 7.800 cm |
| Package 1 Width | 12.000 cm |
| Package 1 Length | 8.600 cm |
| Package 1 Weight | 549.000 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 | 6.917 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 | 122.363 kg |
| Warranty | 18 months |
|---|
Main documents
| Datasheet | Download Datasheet |
| Product datasheet | LRD3365 |
| Download | |
| Download | |
| Download | |
| Environmental disclosure | Download |
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