TeSys LRK
Schneider Electric catalog image for this SKU; may represent the product family.
DIFFERENTIAL THERMAL OVERLOAD RELAY
TeSys K - differential thermal overload relays -2.6...3.7 A - class 10A
SKU LR2K0310Schneider Electric LR2K0310 is a differential thermal overload relay in the TeSys LRK range. Key specifications include current setting range: 2.6…3.7 A; thermal overload class: Class 10A conforming to IEC 60947-4-1; auxiliary contacts: 1 NO + 1 NC.
2.6…3.7 ACurrent setting range
Class 10A conforming to IEC 60947-4-1Thermal overload class
1 NO + 1 NCAuxiliary contacts
PRODUCT DATA
Technical specifications
Source: Schneider Electric product catalog.
Verified September 17, 2026.
| Product reference | LR2K0310 |
|---|---|
| Range | TeSys |
| Product name | TeSys LRK |
| Product or component type | Differential thermal overload relay |
| Device short name | LR2K |
| Relay application | Motor protection |
| Product compatibility | LC7K LP1K LP4K LC1K |
| Network type | DC AC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 2.6…3.7 A |
| [Ui] rated insulation voltage | Power circuit: 690 V conforming to BS 4941 Power circuit: 690 V conforming to IEC 60947 Power circuit: 750 V conforming to VDE 0110 group C Power circuit: 600 V conforming to CSA C22.2 No 14 |
| Network frequency | <= 400 Hz |
| Mounting support | Under contactor Plate, with specific accessories Rail, with specific accessories |
| Auxiliary contact composition | 1 NO + 1 NC |
| [Ith] conventional free air thermal current | 6 A for signalling circuit |
| [Ue] rated operational voltage | <= 690 V for power circuit 690 V AC AC-15 for signalling circuit 250 V DC DC-13 for signalling circuit |
| Associated fuse rating | 6 A gG for signalling circuit conforming to VDE 0660 6 A gG for signalling circuit conforming to IEC 60947 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Power dissipation per pole | 2 W |
| Phase failure sensitivity | Yes conforming to IEC 60947-4-1 |
| Local signalling | Trip indicator (yellow) |
| Control type | Red push-button: trip test function Blue push-button: stop and manual reset selector switch: manual or automatic reset |
| Connections - terminals | Screw clamp terminals 1 cable(s) 1.5…4 mm²solid Screw clamp terminals 2 cable(s) 1.5…4 mm²solid Screw clamp terminals 1 cable(s) 0.75…4 mm²flexible without cable end Screw clamp terminals 2 cable(s) 0.75…4 mm²flexible without cable end Screw clamp terminals 1 cable(s) 0.34…2.5 mm²flexible with cable end Screw clamp terminals 2 cable(s) 0.34…1.5 mm²flexible with cable end |
| Tightening torque | 1.3 N.m - on screw clamp terminals - with screwdriver Philips No 2 1.3 N.m - on screw clamp terminals - with screwdriver flat Ø 6 mm 1.3 N.m - on screw clamp terminals - with screwdriver pozidriv No 2 |
| Height | 58 mm |
| Width | 45 mm |
| Depth | 65 mm |
| Net weight | 0.145 kg |
| Standards | IEC 60947 VDE 0660 BS 4941 NF C 63-650 |
| Product certifications | UL CSA UKCA |
| Protective treatment | TC conforming to IEC 60068 TC conforming to DIN 50016 |
| IP degree of protection | IP2X conforming to IEC 60529 |
| Ambient air temperature for operation | -20…55 °C without derating conforming to IEC 60947 -30…60 °C with derating conforming to IEC 60947 |
| Ambient air temperature for storage | -40…70 °C |
| Operating altitude | 2000 m without derating |
| Fire resistance | 850 °C conforming to 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 |
| Mechanical robustness | Shocks NO contact: 10 Gn for 11 ms conforming to IEC 60068-2-27 Shocks NC contact: 10 Gn for 11 ms conforming to IEC 60068-2-27 Vibrations NO contact: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6 Vibrations NC contact: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6 |
For complete electrical ratings, applicable standards, connection requirements and installation instructions, consult the official Schneider Electric reference ↗.