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Schneider LRE355 overload | Thermal overload relay,EasyPact TVS,30…40A,class 10A
Description
Schneider LRE355 overload| Thermal overload relay,EasyPact TVS,30…40A,class 10A
Schneider LRE355: Comprehensive Overview
Introduction
The Schneider LRE355 thermal overload relay is designed for the protection of electric motors in various industrial applications. This relay offers precision in safeguarding motors from issues like overcurrent, phase imbalance, and phase failure, ensuring reliable operation and extended equipment life. It pairs seamlessly with Schneider Electric’s TeSys contactors, enabling a compact and efficient motor control system.
Technical Specifications
- Model Number: LRE355
- Current Range: Adjustable between 17 and 25 A
- Trip Class: Class 10 (standard for thermal overload protection)
- Mounting Method: Direct mounting on TeSys D contactors or separate mounting with accessories
- Reset Mode: Manual and automatic reset options
- Standards Compliance: Conforms to IEC 60947-4-1 for industrial use
Key Features
- Adjustable Current Settings:
- Allows precise configuration to match motor specifications, providing optimal protection.
- Compatibility:
- Integrates directly with TeSys D contactors for streamlined motor control solutions.
- Thermal and Phase Loss Protection:
- Prevents motor damage from overload, phase loss, and imbalance, improving system reliability.
- Compact Design:
- Saves space in control panels while maintaining high durability for industrial environments.
- User-Friendly Design:
- Features intuitive controls, a visible trip indicator, and easy reset options for quick fault recovery.
Applications
The Schneider LRE355 is ideal for:
- Industrial Automation: Protects motors used in assembly lines and production machinery.
- HVAC Systems: Ensures smooth operation of heating, ventilation, and air-conditioning units.
- Pumps and Compressors: Prevents damage in critical fluid management systems.
- Material Handling: Safeguards conveyor and lift motors from overheating and faults.
Benefits
- Enhanced Motor Safety: Minimizes risks of motor failure, ensuring long-term reliability.
- Reduced Downtime: Quick fault detection and reset options keep operations running smoothly.
- Cost-Effective: Extends motor lifespan, reducing replacement and repair costs.
- Simple Integration: Easy to install with TeSys contactors or as a standalone unit.
Additional information
| brands | Schneider Electric |
|---|
Specifications
| Range | Easy TeSys |
|---|---|
| range of product | Easy TeSys Protect |
| product or component type | Differential thermal overload relay |
| Device short name | LRE |
| Relay application | Motor protection |
| Phase failure sensitivity | Tripping current 130 % of Ir on two phase, the last one at 0 conforming to IEC 60947-4-1 |
| Product compatibility | LC1E40...95 |
|---|---|
| Network type | AC |
| Network frequency | 50...60 Hz |
| Mounting support | Under contactor Plate, with specific accessories Rail, with specific accessories |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Signalling function | Relay trip indicator |
| Thermal protection adjustment range | 30…40 A |
| Tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Mechanical robustness | Shocks: 6 Gn for 11 ms conforming to IEC 60068-2-7 Vibrations: 3 GN conforming to IEC 60068-2-6 |
| Auxiliary contact composition | 1 NO + 1 NC |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| [Ue] rated operational voltage | <= 690 V AC |
| Associated fuse rating | 40 A aM for power circuit 100 A gG for power circuit 5 A gG for signalling circuit |
| [Ui] rated insulation voltage | 690 V conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Local signalling | Trip indicator |
| Control type | Push-button red stop: Push-button green reset: |
| Temperature compensation | -20…60 °C |
| Connections - terminals | Signalling circuit: screw clamp terminals 2 1…2.5 mm² - cable stiffness: flexible without cable end Signalling circuit: screw clamp terminals 2 1…2.5 mm² - cable stiffness: flexible with cable end Signalling circuit: screw clamp terminals 2 1…2.5 mm² - cable stiffness: solid without cable end Power circuit: screw clamp terminals 1 4…35 mm² - cable stiffness: flexible without cable end Power circuit: screw clamp terminals 1 4…35 mm² - cable stiffness: flexible with cable end Power circuit: screw clamp terminals 1 4…35 mm² - cable stiffness: solid without cable end |
| Recommended tightening torque | Power circuit: 9 N.m - on screw clamp terminals Signalling circuit: 1.7 N.m - on screw clamp terminals |
| Height | 54 mm |
| Width | 70 mm |
| Depth | 113 mm |
| net weight | 0.47 kg |
| Standards | IEC 60947-4-1 IEC 60947-5-1 |
|---|---|
| Product certifications | EAC |
| Protective treatment | TH conforming to IEC 60068 |
| 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 -20…70 °C with derating |
| Ambient air temperature for storage | -60…80 °C |
| Fire resistance | 850 °C conforming to IEC 60068-2-1 |
| Dielectric strength | 6 kV at 50 Hz conforming to IEC 60255-5 |
| Electromagnetic compatibility | Surge withstand: 6 kV conforming to IEC 60801-5 |
| 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 | 483.000 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 9 |
| Package 2 Height | 15.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 4.690 kg |
| Warranty | 18 months |
|---|
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