The LRE relay is a differential thermal overload relays for use with fuses or magnetic circuit-breakers GV2 L and GV3 L. Its thermal setting range is 37-50A 50/60Hz and the tripping class is 10A conforming to IEC 60947-4-1. It can be direct mounted on EasyPact TVS contactors with screw clamp terminals connection. It protects unbalanced loads and motors with 22 – 30kW at 400VAC. It provides manual or automatic reset, trip auxiliary contact and flag indicator. Available worldwide, it is multi-standards certified (IEC, UL, CSA, CCC, EAC, Marine) and Green Premium compliant (RoHs/Reach).
| Range | Easy TeSys |
|---|---|
| Range of product | Easy TeSys Protect |
| product or component type | Differential thermal overload relay |
| Device short name | LRE |
| relay application | Motor protection |
| Phase failure sensitivity | Tripping current 130 % of Ir on two phase, the last one at 0 conforming to IEC 60947-4-1 |
| Product compatibility | LC1E50…95 |
|---|---|
| Network type | AC |
| Network frequency | 50…60 Hz |
| Mounting support | Under contactor Plate, with specific accessories Rail, with specific accessories |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Signalling function | Relay trip indicator |
| Thermal protection adjustment range | 37…50 A |
| Tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Mechanical robustness | Shocks: 6 Gn for 11 ms conforming to IEC 60068-2-7 Vibrations: 3 GN conforming to IEC 60068-2-6 |
| auxiliary contact composition | 1 NO + 1 NC |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| [Ue] rated operational voltage | <= 690 V AC |
| Associated fuse rating | 100 A gG for power circuit 63 A aM for power circuit 5 A gG for signalling circuit |
| [Ui] rated insulation voltage | 690 V conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Local signalling | Trip indicator |
| Control type | Push-button red stop: Push-button green reset: |
| Temperature compensation | -20…60 °C |
| Connections – terminals | Signalling circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: flexible without cable end Signalling circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: flexible with cable end Signalling circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: solid without cable end Power circuit: screw clamp terminals 1 4…35 mm² – cable stiffness: flexible without cable end Power circuit: screw clamp terminals 1 4…35 mm² – cable stiffness: flexible with cable end Power circuit: screw clamp terminals 1 4…35 mm² – cable stiffness: solid without cable end |
| Recommended tightening torque | Power circuit: 9 N.m – on screw clamp terminals Signalling circuit: 1.7 N.m – on screw clamp terminals |
| Height | 54 mm |
| Width | 70 mm |
| Depth | 113 mm |
| net weight | 0.46 kg |
| Standards | IEC 60947-4-1 IEC 60947-5-1 |
|---|---|
| Product certifications | EAC |
| Protective treatment | TH conforming to IEC 60068 |
| IP degree of protection | IP20 conforming to IEC 60529 |
| Ambient air temperature for operation | -20…60 °C without derating conforming to IEC 60947-4-1 -20…70 °C with derating |
| ambient air temperature for storage | -60…80 °C |
| Fire resistance | 850 °C conforming to IEC 60068-2-1 |
| Dielectric strength | 6 kV at 50 Hz conforming to IEC 60255-5 |
| Electromagnetic compatibility | Surge withstand: 6 kV conforming to IEC 60801-5 |
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