Schneider Electric Thermal Overload Relay TeSys LRD 12-18A Class 10A LRD21
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Brand : Schneider Electric
Type : Thermal Overload Relays
Description
Schneider Electric LRD21 TeSys LRD Thermal Overload Relay is a protective device used in electrical circuits to protect motors and other equipment from overloading. It works by monitoring the current flowing through a circuit, and if it exceeds a certain threshold for a specified amount of time, it trips and opens the circuit, thereby preventing damage to the equipment.
12-18A is the range of currents that this particular thermal overload relay is designed to protect against. It means that it is suitable for circuits where the current can vary between 12 to 18 amperes. Class 10A is the tripping time characteristic of the overload relay. In the context of thermal overload relays, different classes have different trip times for a given level of overcurrent. In this case, Class 10A typically means that the relay will trip in 10 seconds when the current exceeds the specified threshold.
Features
- 12..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 | LRD10 |
| Package1 Length*Width*Height | 8.8 cm x 7.8 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 | LC1D32, LC1D18, LC1D25, 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: 2.5 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 | 12-18 A |
| Tripping Threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Compatibility | LC1D32, LC1D18, LC1D25, LC1D38 |
| Mechanical Robustness | Vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| Weight | 147.0 g |
