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LR9F71

The Schneider Electric LR9F71 is an electronic thermal overload relay from the TeSys LRF series . It is designed for motor protection and features an adjustable thermal protection range of 132 to 220 A . This relay is intended for direct mounting below TeSys F 3-pole contactors, specifically models LC1F185, LC1F225, and LC1F265

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Technical Specifications (Parameters) Parameter English Value Product Type Electronic thermal overload relay Range / Series TeSys / TeSys LRF Protection Adjustment Range 132 ... 220 A Thermal Overload Class Selectable Class 10/20 (conforming to IEC 60947-4) Compatible Contactors LC1F185, LC1F225, LC1F265 Rated Operational Voltage [Ue] 1000 V AC 50/60 Hz for power circuit Rated Insulation Voltage [Ui] Power circuit: 1000 V AC (conforming to IEC 60947-4) Rated Impulse Withstand Voltage [Uimp] 8 kV (conforming to IEC 60947-1) Auxiliary Contacts 1 NO + 1 NC Alarm Circuit Supply Voltage [Us] 24 V DC Conventional Free Air Thermal Current [Ith] 5 A for control circuit Phase Failure Sensitivity Tripping in 4 s +/- 20 % (conforming to IEC 60947-4-1) Reset Mode Manual reset Degree of Protection IP20 (conforming to IEC 60529) Ambient Air Temperature (Operation) -20 ... +55 °C (conforming to IEC 60255-8) Standards IEC 60947-4-1, UL, CSA, UKCA, CCC