Schneider Electric TeSys LRD Thermal Overload Relay, 37-50 A, Class 10A
Range: TeSys
Product type: Differential thermal overload relay
Relay application: Motor protection
Control type: Push-button red stop, Push-button blue reset
The Schneider Electric LRD350 TeSys LRD Thermal Overload Relay is a dependable solution for safeguarding your motors and electrical equipment from overheating. With a Class 10A rating and a current range of 37-50 A, it provides robust protection for a wide range of motor sizes, ensuring their longevity and reliable performance.
Key Features:
Motor Protection: The LRD350 ensures swift response to temperature fluctuations, preventing motor damage and ensuring safe operation.
Class 10A Rating: Classified as Class 10A, this thermal overload relay delivers reliable protection for motors of various sizes.
Wide Current Range: With a rated current range of 37-50 A, it accommodates diverse motor sizes and applications.
Specifications:
Main | |
| 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 | LC1D65A |
| LC1D50A | |
| LC1D40A | |
| Network type | DC |
| AC | |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 37…50 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 | |
| Complementary | |
| 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 | 0.95 A at 380 V AC-15 for signalling circuit |
| 0.06 A at 440 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 without cable end | |
| Power circuit: EverLink BTR screw connectors 1 cable(s) 1…35 mm² flexible without cable end | |
| Power circuit: EverLink BTR screw connectors 1 cable(s) 1…35 mm² flexible with cable end | |
| Power circuit: EverLink BTR screw connectors 1 cable(s) 1…35 mm² solid without cable end | |
| Tightening torque | Control circuit: 1.7 N.m - on screw clamp terminals |
| Power circuit: 5 N.m - on EverLink BTR screw connectors | |
| height | 70 mm |
| Width | 55 mm |
| Depth | 123 mm |
| Net weight | 0.375 kg |
| Environment | |
| 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 | Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| Vibrations: 4 gn conforming to IEC 60068-2-6 | |
| 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 | |
| EN 50495 | |
| product certifications | IEC |
| UL | |
| CSA | |
| CCC | |
| EAC | |
| DNV-GL | |
| RMRS | |
| EU-RO MR | |
| LROS (Lloyds register of shipping) | |
| ATEX INERIS | |
| UKCA |
| Weight | 0.375000 |
|---|---|
| Brand | Schneider Electric |
| Model | LRD350 |
| Depth [cm] | 12.3 |
| Width [cm] | 5.5 |
| Height [cm] | 7 |
| Range | Tesys D |
| Family | PPCTR |


























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