Schneider TeSys K LR7K0308 non-differential thermal overload relay, 1.8-2.6 A setting range, Class 10A, 1 NO + 1 NC auxiliary contacts, screw clamp terminals, for TeSys K contactors.
| Parameter | Value |
|---|---|
| Control type | Red push-button trip test function Blue push-button stop and manual reset selector switch manual or automatic reset |
| Network type | DC AC |
| Product or component type | Non differential thermal overload relay |
| Voltage | Power circuit 690 V BS 4941 Power circuit 690 V IEC 60947 Power circuit 750 V VDE 0110 group C Power circuit 600 V CSA C22.2 No 14 |
| [Ue] rated operational voltage | 690 V AC AC-15 signalling circuit 250 V DC DC-13 signalling circuit |
| [Uimp] rated impulse withstand voltage | 6 kV |
| [Ith] conventional free air thermal current | 6 A signalling circuit |
| Power dissipation per pole | 2 W |
| Network frequency | <= 400 Hz |
| IP degree of protection | IP2X conforming to IEC 60529 |
| Mounting support | Under contactor Plate, with specific accessories Rail, with specific accessories |
| Connections - terminals | screw clamp terminals 1 0.002...0.006 in² (1.5...4 mm²)solid screw clamp terminals 2 0.002...0.006 in² (1.5...4 mm²)solid screw clamp terminals 1 0.001...0.006 in² (0.75...4 mm²)flexible without cable end screw clamp terminals 2 0.001...0.006 in² (0.75...4 mm²)flexible without cable end screw clamp terminals 1 0.0005...0.004 in² (0.34...2.5 mm²)flexible with cable end screw clamp terminals 2 0.0005...0.002 in² (0.34...1.5 mm²)flexible with cable end |
| Parameter | Value |
|---|---|
| Operating altitude | 6561.68 ft (2000 m) without derating |
| Depth | 2.6 in (65 mm) |
| Width | 1.8 in (45 mm) |
| Height | 2.3 in (58 mm) |
| Standards | BS 4941 NF C 63-650 VDE 0660 IEC 60947 |
| Range | TeSys |
| Category | 22314-**OBS**CTR,D-LINE,OVERLOADS |
| Fire resistance | 1562 °F (850 °C) IEC 60695-2-1 |
| Flame retardance | V1 conforming to UL 94 Requirement 2 conforming to NF F 16-101 Requirement 2 conforming to NF F 16-102 |
| Local signalling | Trip indicator Yellow) |
| Device short name | LR7K |
| Relay application | Motor protection |
| Tightening torque | 11.5 lbf.in (1.3 N.m) screw clamp terminals Philips No 2 11.5 lbf.in (1.3 N.m) screw clamp terminals flat Ø 6 mm 11.5 lbf.in (1.3 N.m) screw clamp terminals pozidriv No 2 |
| Protective treatment | TC IEC 60068 TC DIN 50016 |
| Mechanical robustness | Shocks NO contact10 Gn for 11 ms IEC 60068-2-27 Shocks NC contact10 Gn for 11 ms IEC 60068-2-27 Vibrations NO contact2 Gn, 5...300 Hz IEC 60068-2-6 Vibrations NC contact2 Gn, 5...300 Hz IEC 60068-2-6 |
| Associated fuse rating | 6 A gG for signalling circuit conforming to VDE 0660 6 A gG for signalling circuit conforming to IEC 60947 |
| Thermal overload class | Class 10A IEC 60947-4-1 |
| Auxiliary contact composition | 1 NO + 1 NC |
| Ambient air temperature for storage | -40...158 °F (-40...70 °C) |
| Thermal protection adjustment range | 1.8...2.6 A |
| Ambient air temperature for operation | -4...131 °F (-20...55 °C) without derating IEC 60947 -22...140 °F (-30...60 °C) with derating IEC 60947 |
The LR7K0308 is a TeSys K non-differential thermal overload relay from Schneider, set for motor protection from 1.8 to 2.6 A with a Class 10A trip curve. It carries 1 NO + 1 NC auxiliary contacts and mounts directly under TeSys K contactors LP4K, LC1K, LP1K, and LC7K. The relay is UL, CSA, and UKCA certified, meeting IEC 60947, VDE 0660, BS 4941, and NF C 63-650 standards. Screw clamp terminals accept 0.34 to 4 mm² flexible or solid wire.