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TeSys LR9D electronic overload relay, 32A/690V, thermal setting range 6.4-32A, selectable tripping class 5-10-20-30, for protection of 3-phase motors 3-15kW@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), RoHs/Reach.
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Device short name | LR9D |
| Product compatibility | LC1D18, LC1D12, LC1D38, LC1D32, LC1D25, LC1D09 |
| Mounting support | rail, with specific accessories, plate, with specific accessories, under contactor |
| Range | TeSys |
| Thermal overload class | class 5…30 |
| Product name | TeSys LRD |
| Product or component type | electronic thermal overload relay |
| Relay application | motor protection |
| Power consumption in W | 300 mW |
| Thermal protection adjustment range | 6.4-32 A |
| Complementary | |
| Depth | 79.9 mm |
| Width | 45 mm |
| Control type | grey dial: full-load current adjustment, red knob: automatic reset, white 2 microswitches: adjustable trip class, red push-button: stop and manual reset |
| Tripping threshold | 1.25 In conforming to IEC 60947-4-1 |
| [Ui] rated insulation voltage | signalling circuit: 690 V, power circuit: 1000 V |
| Connections - terminals | power circuit: screw clamp terminals 1 cable 16-16 mm² - cable stiffness: solid or flexible - without cable end, control circuit: screw clamp terminals 1 cable 2.5-2.5 mm² - cable stiffness: solid or flexible - without cable end |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Net weight | 0.18 kg |
| Associated fuse rating | 5 A BS for signalling circuit, 5 A gG for signalling circuit |
| Electromagnetic compatibility | immunity to fast transients: 2 kV conforming to IEC 61000-4-4, immunity to radiated radio-electrical interference: 10 V/m conforming to IEC 61000-4-3, resistance to electrostatic discharge: 8 kV conforming to IEC 61000-4-2, surge withstand: 2 kV common mode conforming to IEC 61000-4-5 |
| [Ue] rated operational voltage | 660 V for signalling circuit, 690 V for power circuit |
| Phase failure sensitivity | phase difference > 40% 3-3 s conforming to IEC 60947-4-1 |
| Tightening torque | power circuit: 3.1 N.m on screw clamp terminals, control circuit: 0.8 N.m on screw clamp terminals |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| Height | 72.5 mm |
| Time range | 1.5...4 min - automatic reset time |
| Environment | |
| Operating altitude | 2000 m without derating |
| IP degree of protection | IP20 front face conforming to IEC 60529 |
| Ambient air temperature for storage | -55-80 °C |
| Dielectric strength | 6 kV 50 Hz conforming to IEC 60255-5 |
| Ambient air temperature for operation | -25-70 °C conforming to IEC 60255-8 |
| Standards | GB/T 14048.5, GB/T 14048.4, CSA C22.2 No 60947-5-1, CSA C22.2 No 60947-4-1, UL 60947-5-1, UL 60947-4-1, EN/IEC 60947-5-1, EN/IEC 60947-4-1 |
| Mechanical robustness | shocks 11 ms: 15 gn conforming to IEC 60068-2-7, vibrations 10...150 Hz: 6 Gn conforming to IEC 60068-2-6 |
| Product certifications | CCC, CSA, UL, IECEE CB Scheme |
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