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TeSys LRD thermal overload relay, 80A/690V, thermal setting range 62-80A, tripping class 10A, for protection of 3-phase motors 37kW@400V. Differential device with phase failure (loss). It provides a thermal adjustement dial, a manual-automatic reset selector, a test selector for simulation of a tripping, reset and stop buttons, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by EverLink BTR screw terminals , it connects directly to the bottom terminals of 3-pole contactors LC1D40A-D80A. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LAD96560 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, Marine).
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Device short name | LRD |
| Product compatibility | LC1D80A |
| [Ui] rated insulation voltage | power circuit: 600 V conforming to CSA C22.2 No 14, power circuit: 600 V conforming to UL 60947-4-1, power circuit: 690 V conforming to IEC 60947-4-1 |
| Range | TeSys Deca, TeSys |
| Thermal overload class | class 10A conforming to IEC 60947-4-1 |
| Product name | TeSys Deca, TeSys LRD |
| Product or component type | differential thermal overload relay |
| Relay application | motor protection |
| Network type | DC, AC |
| Thermal protection adjustment range | 62-80 A |
| Complementary | |
| Temperature compensation | -20-60 °C |
| Depth | 123 mm |
| Width | 55 mm |
| Colour | grey (SE GREY 6) |
| Compatibility code | LRD |
| Mounting support | direct mounting under contactor, rail, with terminal block LAD96560 on top, plate, with terminal block LAD96560 on top |
| Control type | blue push-button: reset, red push-button: stop |
| Tightening torque | power circuit: 6 N.m - on bars M6, power circuit: 6 N.m - on ring lugs M6, control circuit: 1.7 N.m - on screw clamp terminals |
| Tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Permissible current | 0.06 A at 440 V DC-13 for signalling circuit, 0.95 A at 380 V AC-15 for signalling circuit |
| Power dissipation per pole | 4.8 W |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Net weight | 0.375 kg |
| Associated fuse rating | 4 A BS for signalling circuit, 4 A gG for signalling circuit |
| [Ue] rated operational voltage | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| Phase failure sensitivity | tripping current 130 % of Ir on two phase, the last one at 0 |
| Connections - terminals | power circuit: direct terminal link on top, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible, power circuit: bars 6 x 13.5 mm, power circuit: ring lugs external diameter: 16.5 mm, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² solid, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible with cable end |
| Connection pitch | 17.5 mm |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| Auxiliary contact composition | 1 NO + 1 NC |
| Height | 70 mm |
| Network frequency | 0...400 Hz |
| Environment | |
| Ambient air temperature for storage | -60-70 °C |
| Flame retardance | V1 conforming to UL 94 |
| IP degree of protection | IP20 conforming to IEC 60529 |
| Dielectric strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| Ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| Climatic withstand | conforming to IACS E10 |
| Standards | GB/T 14048.5, GB/T 14048.4, CSA C22.2 No 60947-5-1, CSA C22.2 No 60947-4-1, UL 60947-5-1, UL 60947-4-1, EN/IEC 60947-5-1, EN/IEC 60947-4-1 |
| Mechanical robustness | vibrations: 3 GN conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| Product certifications | UKCA, EU-RO MR, RMRS, DNV-GL, EAC, CCC, CSA, UL, IEC |
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