Terms & Conditions
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TeSys LRK thermal overload relay, thermal setting range 2.6-3.7A, tripping class 10A, for protection of 3-phase motors. Non differential device, it can be used with unbalanced loads. 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 screw clamp terminals, it connects directly to the bottom terminals of TeSys K series contactors. Mounting on DIN rail or screw fixing, separated from the contactor, with using terminal block LA7K0064 (to be ordered separately).
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Device short name | LR7K |
| Product compatibility | LP1K, LC7K, LP4K, LC1K |
| [Ui] rated insulation voltage | power circuit: 600 V conforming to CSA C22.2 No 14, power circuit: 750 V conforming to VDE 0110 group C, power circuit: 690 V conforming to IEC 60947, power circuit: 690 V conforming to BS 4941 |
| Range | TeSys |
| Thermal overload class | class 10A conforming to IEC 60947-4-1 |
| Product name | TeSys LRK |
| Product or component type | non differential thermal overload relay |
| Relay application | motor protection |
| Network type | DC, AC |
| Thermal protection adjustment range | 2.6-3.7 A |
| Range of product | TeSys K thermal overload relays |
| Complementary | |
| Depth | 65 mm |
| Width | 45 mm |
| Compatibility code | LR7K |
| Mounting support | rail, with specific accessories, plate, with specific accessories, under contactor |
| Control type | selector switch: manual or automatic reset, blue push-button: stop and manual reset, red push-button: trip test function |
| Tightening torque | 1.3 N.m - on screw clamp terminals - with screwdriver pozidriv 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 Philips No 2 |
| Local signalling | trip indicator (yellow) |
| Power dissipation per pole | 2 W |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Connections - terminals | screw clamp terminals 2 cable(s) 0.34-1.5 mm²flexible with cable end, screw clamp terminals 1 cable(s) 0.34-2.5 mm²flexible with cable end, screw clamp terminals 2 cable(s) 0.75-4 mm²flexible without cable end, screw clamp terminals 1 cable(s) 0.75-4 mm²flexible without cable end, screw clamp terminals 2 cable(s) 1.5-4 mm²solid, screw clamp terminals 1 cable(s) 1.5-4 mm²solid |
| Net weight | 0.145 kg |
| Associated fuse rating | 6 A gG for signalling circuit conforming to IEC 60947, 6 A gG for signalling circuit conforming to VDE 0660 |
| [Ue] rated operational voltage | 250 V DC DC-13 for signalling circuit, 690 V AC AC-15 for signalling circuit, <= 690 V for power circuit |
| [Ith] conventional free air thermal current | 6 A for signalling circuit |
| Auxiliary contact composition | 1 NO + 1 NC |
| Height | 58 mm |
| Network frequency | <= 400 Hz |
| Environment | |
| Fire resistance | 850 °C conforming to IEC 60695-2-1 |
| Operating altitude | 2000 m without derating |
| Protective treatment | TC conforming to DIN 50016, TC conforming to IEC 60068 |
| Ambient air temperature for storage | -40-70 °C |
| Flame retardance | requirement 2 conforming to NF F 16-102, requirement 2 conforming to NF F 16-101, V1 conforming to UL 94 |
| IP degree of protection | IP2X conforming to IEC 60529 |
| Ambient air temperature for operation | -30-60 °C with derating conforming to IEC 60947, -20-55 °C without derating conforming to IEC 60947 |
| Standards | NF C 63-650, VDE 0660, IEC 60947, BS 4941 |
| Mechanical robustness | vibrations NC contact: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6, vibrations NO contact: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6, shocks NC contact: 10 Gn for 11 ms conforming to IEC 60068-2-27, shocks NO contact: 10 Gn for 11 ms conforming to IEC 60068-2-27 |
| Product certifications | UKCA, CSA, UL |
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