The Schneider Electric LR9F7379 TeSys LRF Electronic Thermal Overload Relay is a reliable and advanced device designed to protect motors and equipment from overheating. With a Class 10 rating and a current range of 300-500 A, this electronic thermal overload relay offers precise protection for a wide range of motor sizes and applications.
Key Features:
Advanced Protection: The TeSys LRF Electronic Thermal Overload Relay provides advanced protection against overheating, ensuring the safety and longevity of your motors and equipment.
Wide Current Range: With a current range of 300-500 A, it's suitable for a variety of motor sizes and applications.
Digital Display: The relay features a digital display for easy monitoring and setup, enhancing user convenience.
Reliable Performance: Schneider Electric's reputation for quality and reliability ensures that this relay performs consistently under challenging conditions.
Product Specifications:
Rated Current Range: 300-500 A
Class: Class 10
| 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 | LC1F225...LC1F500 |
| Network type | AC |
| Thermal overload class | Class 10 conforming to IEC 60947-4 |
| Thermal protection adjustment range | 300…500 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 M10 | |
| Tightening torque | Control circuit: 1.2 N.m on screw clamp terminals |
| Power circuit: 35 N.m on screw clamp terminals | |
| height | 136.8 mm |
| Width | 150 mm |
| Depth | 127.6 mm |
| Net weight | 2.32 kg |
| Environment | |
| standards | EN 60947-4-1 |
| VDE 0660 | |
| IEC 60255-17 | |
| IEC 60947-4-1 | |
| IEC 60255-8 | |
| 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 |