Schneider Electric TeSys LRD Thermal Overload Relays 55-70A Class 10A LRD3361
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Brand : Schneider Electric
Type : Thermal Overload Relays
Description
Schneider Electric LRD3361 TeSys LRD Thermal Overload Relay is a protective device used in electrical circuits to prevent motors from drawing too much current for an extended period of time. They work by monitoring the heat generated by the current passing through the motor and tripping if it exceeds a certain threshold.
55-70A is the current range that this specific thermal overload relay is designed to handle. It can be used with motors that draw between 55 and 70 amperes of current. Class 10A is the tripping time characteristic of the thermal overload relay. The relay will trip when the current exceeds a certain threshold and remains at that level for a time equal to or less than 10 seconds.
Features
- 55-70A 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 | LRD3361 |
| Conventional Free Air Thermal Current | 5 A for Signalling Circuit |
| 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 |
| Rated Impulse Withstand Voltage | 6 kV conforming to IEC 60947-1 |
| 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 | 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 |
| Control Type | Red Push-button: stop, blue push-button: reset |
| Depth | 115mm |
| Dielectric Strength | 2.2 kV at 50 Hz conforming to IEC 60947-1 |
| Flame Retardance | V1 conforming to UL 94 |
| Height | 81mm |
| 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 | 0.72 A at 500 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, ATEX INERIS, UKCA |
| Compatibility | LC1D95, LC1D80 |
| Range | TeSys, TeSys Deca |
| Rated Operational Voltage Limits | 1000 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: 9 N.m - on screw clamp terminals |
| Width | 70 mm |
| Temperature Compensation | -20-60 °C |
| Thermal Overload Class | Class 10A conforming to IEC 60947-4-1 |
| Thermal Protection Adjustment Range | 55-70 A |
| Tripping Threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Weight | 0.51 kg |
