TeSys K - non differential thermal overload relays - 1.8...2.6 A - class 10A
LR7K0308
Description
TeSys LRK thermal overload relay, thermal setting range 1.8-2.6A, 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 contactors. Mounting on DIN rail or screw fixing, separated from the contactor, with using terminal block LA7K0064 (to be ordered separately).
Product Details
| [ue] Rated Operational Voltage | <= 690 V for power circuit |
|---|---|
| [ui] Rated Insulation Voltage | power circuit: 690 V conforming to BS 4941 |
| [uimp] Rated Impulse Withstand Voltage | 6 kV |
| Ambient Air Temperature for Operation | -20-55 °C without derating conforming to IEC 60947 |
| Ambient Air Temperature for Storage | -40-70 °C |
| Compatibility Code | LR7K |
| Control Type | red push-button: trip test function |
| Depth | 65 mm |
| Device Short Name | LR7K |
| Fire Resistance | 850 °C conforming to IEC 60695-2-1 |
| Flame Retardance | V1 conforming to UL 94 |
| Height | 58 mm |
| Ip Degree of Protection | IP2x conforming to IEC 60529 |
| Mechanical Robustness | shocks NO contact: 10 Gn for 11 ms conforming to IEC 60068-2-27 |
| Mounting Support | under contactor |
| Net Weight | 0.145 kg |
| Network Frequency | <= 400 Hz |
| Network Type | DC |
| Product Certifications | UL |
| Product Compatibility | LP4K |
| Product Name | TeSys LRK |
| Product or Component Type | non differential thermal overload relay |
| Range | TeSys |
| Range of Product | TeSys K thermal overload relays |
| Standards | BS 4941 |
| Tightening Torque | 1.3 N.m - on screw clamp terminals - with screwdriver Philips No 2 |
| Width | 45 mm |
| Connections - Terminals | screw clamp terminals 1 cable(s) 1.5-4 mm²solid |
| [ith] Conventional Free Air Thermal Current | 6 A for signalling circuit |
| Associated Fuse Rating | 6 A gG for signalling circuit conforming to VDE 0660 |
| Auxiliary Contact Composition | 1 NO + 1 NC |
| Local Signalling | trip indicator (yellow) |
| Operating Altitude | 2000 m without derating |
| Power Dissipation Per Pole | 2 W |
| Protective Treatment | TC conforming to IEC 60068 |
| Relay Application | motor protection |
| Thermal Overload Class | class 10A conforming to IEC 60947-4-1 |
| Thermal Protection Adjustment Range | 1.8-2.6 A |
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