{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LR3D1512","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LR3D1512","canonicalUrl":"https://aoctrl.com/schneider/LR3D1512","factsUrl":"https://aoctrl.com/api/mcp/products/LR3D1512","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys LRD series, LR3D1512, non-differential thermal overload relay, 5.5...8 A, Class 20, obsolete.","salesMarkdown":"The Schneider Electric TeSys LR3D1512 is a non-differential thermal overload relay for motor protection, with a thermal protection adjustment range of 5.5...8 A and a Class 20 tripping curve per IEC 60947-4-1. It is now classified as obsolete by the manufacturer. The 5.5...8 A adjustment range sets the full-load motor current (Ir) the relay protects. Class 20 means it allows up to 20 seconds of locked-rotor current before tripping — standard for general-purpose induction motors starting under load, like conveyors or pumps. The phase-failure sensitivity trips at 130 % of Ir on two phases with the third at zero, which catches a lost phase before the motor overheats. Auxiliary contacts are 1 NO + 1 NC, rated 1.5 A at 240 V AC-15 for signalling circuits and 0.1 A at 250 V DC-13. That means the NC contact can drop out a holding circuit on trip, while the NO signals the alarm to a PLC input — standard for a motor starter interlock. The IP20 finger-safe enclosure suits panel-mount installation — not for washdown or outdoor use. Certified to EN/IEC 60947-4-1 and 60947-5-1, UL 60947-4-1 and 60947-5-1, CSA C22.2 No 60947-4-1 and 60947-5-1, plus GB/T 14048.4 and 14048.5. Rated insulation voltage (Ui) is 600 V for CSA/UL and 690 V for IEC; rated operational voltage (Ue) is 690 V AC at 0...400 Hz. Impulse withstand (Uimp) is 6 kV.","metaTitle":"Schneider LR3D1512 TeSys thermal overload relay, 5.5-8 A, ob","metaDescription":"Schneider Electric TeSys LR3D1512 non-differential thermal overload relay, 5.5-8 A adjustment range, Class 20, obsolete. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Overload Relays"],"specifications":{"Depth":"3.6 in (92 mm)","Range":"TeSys","Width":"1.8 in (45 mm)","Category":"22314-**OBS**CTR,D-LINE,OVERLOADS","Standards":"EN/IEC 60947-4-1 EN/IEC 60947-5-1 UL 60947-4-1 UL 60947-5-1 CSA C22.2 No 60947-4-1 CSA C22.2 No 60947-5-1 GB/T 14048.4 GB/T 14048.5","Control type":"Red push-button stop Blue push-button reset","Network type":"AC DC","Product name":"TeSys LRD","lifecycle_stage":"current","Flame retardance":"V1 conforming to UL 94","Mounting support":"Plate, with specific accessories Rail, with specific accessories Under contactor","Device short name":"LR3D","Network Frequency":"0...400 Hz","Relay application":"Motor protection","Tightening torque":"Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals Power circuit 16.37 lbf.in (1.85 N.m) screw clamp terminals","Tripping threshold":"1.14 +/- 0.06 Ir IEC 60947-4-1","Dielectric strength":"1.89 kV 50 Hz IEC 60947-1","Permissible current":"1.5 A 240 V AC-15 signalling circuit 0.1 A 250 V DC-13 signalling circuit","Mechanical robustness":"Vibrations6 Gn IEC 60068-2-6 Shocks15 Gn for 11 ms IEC 60068-2-7","Associated fuse rating":"4 A gG for signalling circuit 4 A BS for signalling circuit","Thermal overload class":"Class 20 IEC 60947-4-1","Connections - terminals":"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...0.004 in² (1...2.5 mm²) flexible with cable end Control circuit screw clamp terminals 2 0.002...0.004 in² (1...2.5 mm²) solid without cable end Power circuit screw clamp terminals 1 0.002...0.02 in² (1.5...10 mm²) flexible without cable end Power circuit screw clamp terminals 1 0.002...0.006 in² (1...4 mm²) flexible with cable end Power circuit screw clamp terminals 1 0.002...0.009 in² (1...6 mm²) solid without cable end","IP degree of protection":"IP20 conforming to IEC 60529","Temperature compensation":"-4...140 °F (-20...60 °C)","Phase failure sensitivity":"Tripping current 130 % of Ir on two phase, the last one at 0","Product or Component Type":"Non differential thermal overload relay","Auxiliary contact composition":"1 NO + 1 NC","[Ui] rated insulation voltage":"Power circuit 600 V CSA Power circuit 600 V UL Power circuit 690 V IEC 60947-4-1","[Ue] rated operational voltage":"690 V AC 0...400 Hz power circuit IEC 60947-4-1","Ambient Air Temperature for Storage":"-76...158 °F (-60...70 °C)","Thermal protection adjustment range":"5.5...8 A","Ambient air temperature for operation":"-4...140 °F (-20...60 °C) without derating IEC 60947-4-1","[Uimp] rated impulse withstand voltage":"6 kV","[Ith] conventional free air thermal current":"5 A signalling circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/08ce3073068e9a54262387b678160d9a.pdf","sourceUrl":"https://www.se.com/vn/en/product/LR3D1512/tesys-lrd-thermal-overload-relays-5-5-8-a-class-20/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LR3D1512/alternatives.json"},"ai":{"faq":[{"question":"What is the thermal adjustment range of the LR3D1512?","answer":"The thermal protection adjustment range is 5.5...8 A."},{"question":"What standards does the LR3D1512 comply with?","answer":"It complies with EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, and GB/T 14048.5."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LR3D1512","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/LR3D1512 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}