TeSys LRD - electronic thermal overload relay - 3P - 1.6...8 A
Description
TeSys LR9D electronic overload relay, 8A/690V, thermal setting range 1.6-8A, selectable tripping class 5-10-20-30, for protection of 3-phase motors 0.75-3kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, buttons for test, stop and reset as well as manual-automatic reset selector, dipswitches for tripping class selection, 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 3-pole contactors LC1D09-D38. Mounting on DIN rail or screw fixing, separated from contactor, with use of the terminal block LAD7B205 (to be ordered separately). Multi-standards certified (IEC, UL, CSA, CCC), Green Premium compliant (RoHs/Reach).
Product Details
| [ue] Rated Operational Voltage | 690 V for power circuit |
|---|---|
| [ui] Rated Insulation Voltage | power circuit: 1000 V |
| [uimp] Rated Impulse Withstand Voltage | 6 kV |
| Ambient Air Temperature for Operation | -25-70 °C conforming to IEC 60255-8 |
| Ambient Air Temperature for Storage | -55-80 °C |
| Control Type | red push-button: stop and manual reset |
| Depth | 79.9 mm |
| Device Short Name | LR9D |
| Dielectric Strength | 6 kV 50 Hz conforming to IEC 60255-5 |
| Electromagnetic Compatibility | surge withstand: 2 kV common mode conforming to IEC 61000-4-5 |
| Height | 72.5 mm |
| Ip Degree of Protection | IP20 front face conforming to IEC 60529 |
| Mechanical Robustness | vibrations 10...150 Hz: 6 Gn conforming to IEC 60068-2-6 |
| Mounting Support | under contactor |
| Net Weight | 0.18 kg |
| Power Consumption in w | 300 mW |
| Product Certifications | IECEE CB Scheme |
| Product Compatibility | LC1D12 |
| Product Name | TeSys LRD |
| Product or Component Type | electronic thermal overload relay |
| Range | TeSys |
| Standards | EN/IEC 60947-4-1 |
| Tightening Torque | control circuit: 0.8 N.m on screw clamp terminals |
| Width | 45 mm |
| Connections - Terminals | control circuit: screw clamp terminals 1 cable 2.5-2.5 mm² - cable stiffness: solid or flexible - without cable end |
| [ith] Conventional Free Air Thermal Current | 5 A for signalling circuit |
| Associated Fuse Rating | 5 A gG for signalling circuit |
| Operating Altitude | 2000 m without derating |
| Phase Failure Sensitivity | phase difference > 40% 3-3 s conforming to IEC 60947-4-1 |
| Relay Application | motor protection |
| Thermal Overload Class | class 5…30 |
| Thermal Protection Adjustment Range | 1.6-8 A |
| Time Range | 1.5...4 min - automatic reset time |
| Tripping Threshold | 1.25 In conforming to IEC 60947-4-1 |