{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LR9F57","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LR9F57","canonicalUrl":"https://aoctrl.com/schneider/LR9F57","factsUrl":"https://aoctrl.com/api/mcp/products/LR9F57","rawCanonicalId":null},"summary":{"shortDescription":"TeSys LRF - electronic thermal overload relay - 30...50 A - class 10/20","salesMarkdown":null,"metaTitle":null,"metaDescription":null,"metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"Depth":"4.9 in (123.5 mm)","Range":"TeSys","Reset":"Manual reset","Width":"4.5 in (115 mm)","Height":"3.8 in (96 mm)","Category":"US10I1222334","Standards":"IEC 60255-17 IEC 60255-8 VDE 0660 IEC 60947-4-1 EN 60947-4-1","Control type":"Dial White full-load current adjustment Test button Red Push-button reset Push-button Red stop Selector switch load balancing Selector switch class 10/20","Network type":"AC","Product name":"TeSys LRF","Fire resistance":"1562 °F (850 °C) IEC 60695-2-1","Surge withstand":"4 kV IEC 61000-4-5","lifecycle_stage":"current","Local signalling":"Alarm Trip indicator","Mounting support":"Direct on contactor Plate","Device short name":"LR9F","Network Frequency":"50/60 Hz","Relay application":"Motor protection","Tightening torque":"Control circuit 1.2 N.m screw clamp terminals Alarm circuit 0.45 N.m screw clamp terminals Power circuit 10 N.m screw clamp terminals","Operating altitude":"<= 6561.68 ft (2000 m) without derating","Tripping threshold":"1.05 +/- 0.06 In alarm IEC 60947-4-1 1.12 +/- 0.06 In tripping IEC 60947-4-1","Current consumption":"<= 5 mA no-load","Dielectric strength":"6 kV 50 Hz IEC 255-5","Signalling function":"Pre-alarm indicator","Maximum voltage drop":"<2.5 V closed state","Protective treatment":"TH","Mechanical robustness":"Shocks13 Gn for 11 ms IEC 60068-2-7 Vibrations 5...300 Hz2 GN IEC 60068-2-6","Nbr. of units in pkg.":"1","Supply voltage limits":"17...32 V alarm circuit)","Thermal overload class":"Class 10/20 IEC 60947-4","Connections - terminals":"Control circuit screw clamp terminals 1 0.001...0.004 in² (0.75...2.5 mm²) flexible - with cable end Control circuit screw clamp terminals 1 0.001...0.004 in² (0.75...2.5 mm²) solid Control circuit screw clamp terminals 1 0.001...0.006 in² (0.75...4 mm²) flexible - without cable end Control circuit screw clamp terminals 2 0.002...0.002 in² (1...1.5 mm²) flexible - with cable end Control circuit screw clamp terminals 2 0.002...0.004 in² (1...2.5 mm²) flexible - without cable end Control circuit screw clamp terminals 2 0.002 in² (1 mm²) solid Power circuit lugs-ring terminals M6 Alarm circuit screw clamp terminals 1 0.0008...0.002 in² (0.5...1.5 mm²) flexible - without cable end","IP degree of protection":"IP20 conforming to IEC 60529","Temperature compensation":"-4...158 °F (-20...70 °C)","Phase failure sensitivity":"Tripping in 4 s +/- 20 % IEC 60947-4-1","Product or Component Type":"Electronic thermal overload relay","[Us] rated supply voltage":"24 V DC alarm circuit","Switching Capacity For Alarm":"0...150 mA","Contacts type and composition":"1 NO + 1 NC","Electromagnetic compatibility":"Resistance to electrostatic discharge 6 kV in indirect mode IEC 61000-4-2 Resistance to electrostatic discharge 8 kV in air IEC 61000-4-2 Radiated radio-frequency electromagnetic field immunity test 10 V/m IEC 61000-4-3 Fast transients immunity test 2 kV IEC 61000-4-4","[Ui] rated insulation voltage":"Power circuit 1000 V AC IEC 60947-4","[Ue] rated operational voltage":"1000 V AC 50/60 Hz power circuit VDE 0110 group C","Ambient Air Temperature for Storage":"-40...185 °F (-40...85 °C)","Thermal protection adjustment range":"30...50 A","Ambient air temperature for operation":"-4...131 °F (-20...55 °C) IEC 60255-8","[Uimp] rated impulse withstand voltage":"8 kV IEC 60947-1","[Ith] conventional free air thermal current":"5 A control circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3da5eb99a090284c2a868456bd375eb7.pdf","sourceUrl":"https://www.se.com/vn/en/product/LR9F57/tesys-lrf-electronic-thermal-overload-relay-30-50-a-class-10-20/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LR9F57/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LR9F57","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/LR9F57 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}