Technical Parameters Parameter Value / Range Product Series TeSys LRF / TeSys Device Short Name LR9F Model LR9F7379 Product Type Electronic thermal overload relay Protection Functions Overload, Phase Failure, Phase Unbalance Thermal Protection Adjustment Range 300 ~ 500 A Overload Tripping Class Class 10 (conforming to IEC 60947-4-1) Compatible Contactors LC1F225 to LC1F500 Auxiliary Contacts 1 NO + 1 NC Rated Operational Voltage (Ue) 1000 V AC 50/60 Hz (power circuit) Rated Insulation Voltage (Ui) 1000 V AC (power circuit) conforming to IEC 60947-4 Rated Impulse Withstand Voltage (Uimp) 8 kV conforming to IEC 60947-1 Conventional Free Air Thermal Current (Ith) 5 A (control circuit) Control Supply Voltage 24 V DC Phase Failure Trip Time ≤ 4 seconds (±20%) conforming to IEC 60947-4-1 Tripping Threshold 1.12 ± 0.06 In tripping conforming to IEC 60947-4-1 Reset Method Manual reset on front relay Mounting Support Direct on contactor (TeSys F) or plate Connections - Terminals Control circuit: Screw clamp terminals (0.75...4 mm² flexible/solid) Power circuit: Lug-ring terminals M10 Tightening Torque Control circuit: 1.2 N.m Power circuit: 35 N.m Operating Temperature -20°C to +55°C (operation) conforming to IEC 60255-8 Storage Temperature -40°C to +85°C Temperature Compensation -20°C to +70°C Network Frequency 50/60 Hz Dimensions (W x H x D) 150 mm x 136.8 mm x 127.6 mm Net Weight Approx. 2.32 kg Degree of Protection IP20 (front face) conforming to IEC 60529 and VDE 0106 Power Rating 100 W Contact Current Rating 630 A Standards and Certifications EN 60947-4-1, IEC 60947-4-1, IEC 60255-8, IEC 60255-17, VDE 0660, UL, CSA, UKCA Environmental Protection "TH" protective treatment for humid environments Sustainable Status Green Premium product (RoHS/REACH compliant); 92% recyclability potential Fire Resistance 850°C conforming to IEC 60695-2-1 Country of Origin France or India Commercial Status Discontinued as of June 15, 2023