Schneider Electric TeSys LRD Thermal Overload Relay 5.5-8A Class 10A LRD12
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Brand : Schneider Electric
Type : Thermal Overload Relays
Description
Schneider Electric LRD12 TeSys LRD Thermal Overload Relay is a protective device used in electrical systems to prevent motors from overheating and potentially causing damage or creating a safety hazard. 5.5-8A is the current setting of the thermal overload relay. It implies that the relay is designed to protect a motor with a current draw between 5.5 amperes and 8 amperes. If the current exceeds this range, the relay will trip and disconnect the motor from the power source.
Class 10A is a standard classification system used for thermal overload relays. It indicates the trip time of the relay under a specific overload condition. In this case, Class 10A means that the relay will trip within 10 seconds when the motor current reaches approximately six times the specified current rating (between 33A and 48A in this case, as calculated from the 5.5-8A range).
Features
- 5.5-18A 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 | LRD12 |
| Package1 Length*Width*Height | 9.0 cm x 7.9 cm x 5.0 cm |
| Country of Manufacturing | France |
| Conventional Free Air Thermal Current | 5 A for signalling circuit |
| Rated Operational Voltage | 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, power circuit: screw clamp terminals 1 cable(s) 1.5-10 mm² flexible without cable end, power circuit: screw clamp terminals 1 cable(s) 1-4 mm² flexible with cable end, power circuit: screw clamp terminals 1 cable(s) 1-6 mm² solid |
| Control Type | Red Push-button: stop, blue push-button: reset |
| Depth | 70 mm |
| Dielectric Strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| Flame Retardance | V1 conforming to UL 94 |
| Height | 66 mm |
| IP Degree Of Protection | IP20 Conforming to IEC 60529 |
| Mechanical Robustness | Vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| Mounting Support | Plate, with specific accessories, rail, with specific accessories, under contactor |
| Network Frequency | 0...400 Hz |
| Network Type | DC, AC |
| Permissible Current | 1.5 A at 240 V AC-15 for signalling circuit, 0.1 A at 250 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, BV, RINA, DNV-GL, LROS (Lloyds register of shipping), ATEX INERIS, UKCA |
| Compatibility | LC1D18, LC1D25, LC1D32, LC1D12, LC1D09, LC1D38 |
| 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: 1.7 N.m - on screw clamp terminals |
| Width | 45 mm |
| Temperature Compensation | -20-60 °C |
| Thermal Overload Class | Class 10A conforming to IEC 60947-4-1 |
| Thermal Protection Adjustment Range | 5.5-8A |
| Tripping Threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Weight | 142.0 g |
