Schneider LRD3361 | TeSys LRD thermal overload relays – 55…70 A – class 10A
LRD3361 | TeSys LRD thermal overload relays – 55…70 A – class 10A
Description
Schneider LRD3361 | TeSys LRD thermal overload relays – 55…70 A – class 10A
1. Introduction
The Schneider LRD3361 is a thermal overload relay from the TeSys LRD series, designed to provide protection against overloads and phase failure in electrical motor circuits. With an adjustable current range of 55-70A and Class 10A tripping characteristics, this relay ensures reliable motor protection and optimal system performance. It is typically used in combination with TeSys LC1D contactors for seamless integration into motor control panels.
2. Key Features
- Adjustable Current Range: 55-70A
- Tripping Class: 10A
- Reset Options: Manual and automatic reset
- Phase Failure Protection: Helps prevent damage due to phase loss
- Mounting Compatibility: Directly mounts on TeSys LC1D contactors
- Auxiliary Contacts: 1 normally open (NO) + 1 normally closed (NC)
- Compact and Durable: Designed for industrial environments
3. Technical Specifications
- Product Type: Thermal Overload Relay
- Series: TeSys LRD
- Current Adjustment Range: 55-70A
- 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 overheating and damage
- Easy Integration: Mounts directly onto LC1D contactors
- Versatile Reset Options: Adaptable to different control requirements
- Compact Design: Saves space in control panels
- Energy-Efficient: Reduces downtime and maintenance costs
6. Conclusion
The Schneider LRD3361 is a high-performance thermal overload relay that ensures efficient and reliable motor protection in industrial and commercial applications. With its adjustable 55-70A range, Class 10A tripping characteristics, and built-in phase failure protection, it is an ideal choice for preventing motor damage and enhancing system safety
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 | LC1D95 LC1D80 |
| Network type | DC AC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 55…70 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 | 11.900 cm |
| Package 1 Length | 8.600 cm |
| Package 1 Weight | 506.000 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 | 6.450 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 | 113.700 kg |
| Warranty | 18 months |
|---|
Reviews
There are no reviews yet.