TeSys LR9F electronic overload relay, thermal setting range 30-50A, class 10, for protection of motors 18.5-22kW@400V. to be mounted directly below a TeSys F 3-pole contactor LC1 F115, F150, F185, use of a support mounting plate LA7F901 is recommended (to be ordered separately).
Motor protection includes thermal overload of 1-phase and 3-phase motors, phase failure, phase unbalance, prolonged starting times, stalled rotor conditions. On the front of the relay, it provides a thermal adjustement dial, buttons for test, stop & reset, a trip indicator, trip auxiliary contacts 1NO+1NC. Multi standards certified (IEC, UL, CSA, CCC, Marine), Green Premium compliant (RoHs/Reach).
| Specifications | |
| Main | |
| Range | TeSys |
| Product name | TeSys LRF |
| Device short name | LR9F |
| Product or component type | Electronic thermal overload relay |
| relay application | Motor protection |
| Product compatibility | LC1F115…LC1F185 |
| network type | AC |
| Thermal overload class | Class 10 conforming to IEC 60947-4 |
| Thermal protection adjustment range | 30…50 A |
| Complementary | |
| network frequency | 50/60 Hz |
| Mounting support | Direct on contactor |
| Plate | |
| Tripping threshold | 1.12 +/- 0.06 In tripping conforming to IEC 60947-4-1 |
| Surge withstand | 4 kV conforming to IEC 61000-4-5 |
| Contacts type and composition | 1 NO + 1 NC |
| [Ith] conventional free air thermal current | 5 A for control circuit |
| [Ue] rated operational voltage | 1000 V AC 50/60 Hz for power circuit conforming to VDE 0110 group C |
| [Ui] rated insulation voltage | Power circuit: 1000 V AC conforming to IEC 60947-4 |
| [Uimp] rated impulse withstand voltage | 8 kV conforming to IEC 60947-1 |
| Phase failure sensitivity | Tripping in 4 s +/- 20 % conforming to IEC 60947-4-1 |
| Reset | Manual reset on front relay |
| Control type | Dial white full-load current adjustment |
| Test button red | |
| Push-button red reset | |
| Push-button stop | |
| local signalling | Trip indicator |
| Temperature compensation | -20…70 °C |
| Current consumption | <= 5 mA no-load |
| switching capacity for alarm | 0…150 mA |
| Maximum voltage drop | <2.5 V closed state |
| Connections – terminals | Control circuit: screw clamp terminals 1 cable 0.75…2.5 mm² – cable stiffness: flexible – with cable end |
| Control circuit: screw clamp terminals 1 cable 0.75…2.5 mm² – cable stiffness: solid | |
| Control circuit: screw clamp terminals 1 cable 0.75…4 mm² – cable stiffness: flexible – without cable end | |
| Control circuit: screw clamp terminals 2 cable 1…1.5 mm² – cable stiffness: flexible – with cable end | |
| Control circuit: screw clamp terminals 2 cable 1…2.5 mm² – cable stiffness: flexible – without cable end | |
| Control circuit: screw clamp terminals 2 cable 1 mm² – cable stiffness: solid | |
| Power circuit: lugs-ring terminals M6 | |
| Tightening torque | Control circuit: 1.2 N.m on screw clamp terminals |
| Power circuit: 10 N.m on screw clamp terminals | |
| Height | 96 mm |
| Width | 115 mm |
| Depth | 123.5 mm |
| Net weight | 0.885 kg |
| Environment | |
| Standards | IEC 60255-8 |
| IEC 60947-4-1 | |
| VDE 0660 | |
| IEC 60255-17 | |
| EN 60947-4-1 | |
| Product certifications | CSA |
| UL | |
| UKCA | |
| Protective treatment | TH |
| IP degree of protection | IP20 conforming to IEC 60529 |
| IP20 conforming to VDE 0106 | |
| Ambient air temperature for operation | -20…55 °C conforming to IEC 60255-8 |
| Ambient air temperature for storage | -40…85 °C |
| Operating altitude | <= 2000 m without derating |
| Fire resistance | 850 °C conforming to IEC 60695-2-1 |
| Mechanical robustness | Shocks: 13 Gn for 11 ms conforming to IEC 60068-2-7 |
| Vibrations 5…300 Hz: 2 GN conforming to IEC 60068-2-6 | |
| Dielectric strength | 6 kV 50 Hz conforming to IEC 255-5 |
| Electromagnetic compatibility | Resistance to electrostatic discharge: 6 kV in indirect mode conforming to IEC 61000-4-2 |
| Resistance to electrostatic discharge: 8 kV in air conforming to IEC 61000-4-2 | |
| Radiated radio-frequency electromagnetic field immunity test: 10 V/m conforming to IEC 61000-4-3 | |
| Fast transients immunity test: 2 kV conforming to IEC 61000-4-4 | |
| Packing Units | |
| Unit Type of Package 1 | PCE |
| Number of Units in Package 1 | 1 |
| Package 1 Height | 13.5 cm |
| Package 1 Width | 15.0 cm |
| Package 1 Length | 16.0 cm |
| Package 1 Weight | 779.0 g |
| Unit Type of Package 2 | S04 |
| Number of Units in Package 2 | 12 |
| Package 2 Height | 30.0 cm |
| Package 2 Width | 40.0 cm |
| Package 2 Length | 60.0 cm |
| Package 2 Weight | 10.218 kg |
| Contractual warranty | |
| Warranty | 18 months |
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