Schneider Electric TeSys LRD Thermal Overload Relays 37-50A Class 10A LRD350
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Brand : Schneider Electric
Type : Thermal Overload Relays
Description
Schneider Electric LRD350 TeSys LRD Thermal Overload Relay is a protective device used in electrical circuits to protect motors and other equipment from damage due to overloading. 37-50A is the current range for which the thermal overload relay is designed to operate. It means the relay is intended for use in circuits where the current is expected to be between 37 and 50 amperes. This is the range at which the relay will start to actuate.
Class 10A is the tripping time characteristic of the thermal overload relay. Class 10A typically means that the relay will trip within 10 seconds when the current exceeds the specified threshold.
So, Schneider Electric LRD350 TeSys LRD Thermal Overload Relays is designed to protect electrical circuits with a current range of 37 to 50 amperes, and it will trip within 10 seconds if the current exceeds its threshold.
Features
- 37-50A Th Overload Relay
- Protect motors from overloads and phase failures
- Easier to install and operate with multi-standard screws
| Brand | Schneider Electric |
| Item Name | Thermal Overload Relays |
| Model | LRD350 |
| Conventional Free Air Thermal Current | 5 A for Signalling Circuit |
| Rated Operational Voltage Limits | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| 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 |
| Rated Impulse Withstand Voltage | 6 kV |
| Ambient Air Temperature For Operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| Ambient Air Temperature For Storage | -60-70 °C |
| Associated Fuse Rating | 4 A gG for signalling circuit, 4 A BS for signalling circuit |
| Auxiliary Contact Composition | 1 NO + 1 NC |
| Climatic Withstand | Conforming to IACS E10 |
| Compatibility Code | LRD |
| 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 |
| Control Type | Red Push-button: stop, blue push-button: reset |
| Depth | 123 mm |
| Dielectric Strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| Flame Retardance | V1 conforming to UL 94 |
| Height | 70 mm |
| IP Degree Of Protection | IP20 Conforming to IEC 60529 |
| Mechanical Robustness | shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7, vibrations: 4 gn conforming to IEC 60068-2-6 |
| Mounting Support | Plate, with specific accessories, rail, with specific accessories, under contactor |
| Network Frequency | 0...400 Hz |
| Network Type | DC, AC |
| Permissible Current | 0.95 A at 380 V AC-15 for signalling circuit, 0.06 A at 440 V DC-13 for signalling circuit |
| Phase Failure Sensitivity | Tripping Current 130 % of Ir on two phase, the last one at 0 |
| Certifications | IEC, UL, CSA, CCC, EAC, DNV-GL, RMRS, EU-RO MR, LROS (Lloyds register of shipping), ATEX INERIS, UKCA |
| Compatibility | LC1D65A, LC1D50A, LC1D40A |
| Range | TeSys, TeSys Deca |
| Rated Operational Voltage Limits | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| Relay Application | Motor Protection |
| 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 |
| Tightening Torque | control circuit: 1.7 N.m - on screw clamp terminals, power circuit: 5 N.m - on EverLink BTR screw connectors |
| Width | 45 mm |
| Temperature Compensation | -20-60 °C |
| Thermal Overload Class | Class 10A conforming to IEC 60947-4-1 |
| Thermal Protection Adjustment Range | 37-50 A |
| Tripping Threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Mechanical Robustness | Vibrations : 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for11 ms conforming to IEC 60068-2-7 |
| Weight | 141.0 g |
