{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LRD15166","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LRD15166","canonicalUrl":"https://aoctrl.com/schneider/LRD15166","factsUrl":"https://aoctrl.com/api/mcp/products/LRD15166","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca LRD15166 differential thermal overload relay, 9-13 A adjustment range, Class 20, obsolete.","salesMarkdown":"The Schneider LRD15166 is a TeSys Deca differential thermal overload relay for motor protection, with a thermal protection adjustment range of 9...13 A and a Class 20 tripping characteristic per IEC 60947-4-1. It provides phase-failure sensitivity, tripping at 130 % of the set current (Ir) on two phases when the third is at zero — a standard requirement for three-phase motor protection. The relay is rated for use on power circuits up to 690 V AC at 0...400 Hz, with an impulse withstand voltage of 6 kV and dielectric strength of 1.89 kV at 50 Hz per IEC 60947-1. Compliant 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, and CSA C22.2 No 60947-5-1, covering motor protection and control circuit applications in North American and European installations. Rated insulation voltage (Ui) is 600 V per CSA and UL, and 690 V per IEC 60947-4-1 for the power circuit. The relay has a width of 45 mm, depth of 92 mm, and a connection pitch of 17.5 mm for the control circuit screw-clamp terminals. Control circuit terminals accept 1...2.5 mm² flexible or solid wire (with or without cable end), tightened to 1.7 N.m. Power circuit uses lugs-ring terminals at 2.3 N.m.","metaTitle":"Schneider LRD15166 TeSys Deca Thermal Overload Relay, 9-13 A","metaDescription":"Obsolete Schneider LRD15166 TeSys Deca thermal overload relay, 9-13 A, Class 20. Sourced to order against RFQ. IEC/UL/CSA listed.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Overload Relays"],"specifications":{"Depth":"92 mm","Range":"TeSys","Width":"45 mm","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","Control type":"Red push-button: stop Blue push-button: reset","Network type":"DC AC","Product name":"TeSys LRD TeSys Deca","Fire resistance":"850 °C conforming to IEC 60695-2-1","lifecycle_stage":"current","Connection pitch":"17.5 mm","Flame retardance":"V1 conforming to UL 94","Mounting support":"Plate, with specific accessories Rail, with specific accessories Under contactor","Device short name":"LRD","Network frequency":"0...400 Hz","Relay application":"Motor protection","Tightening torque":"Control circuit: 1.7 N.m - on screw clamp terminals Power circuit: 2.3 N.m - on lugs-ring terminals M4","Climatic withstand":"conforming to IACS E10","Tripping threshold":"1.14 +/- 0.06 Ir conforming to IEC 60947-4-1","Dielectric strength":"1.89 kV at 50 Hz conforming to IEC 60947-1","Permissible current":"1.5 A at 240 V AC-15 for signalling circuit 0.1 A at 250 V DC-13 for signalling circuit","Mechanical robustness":"Vibrations: 6 Gn conforming to IEC 60068-2-6 Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7","Associated fuse rating":"4 A gG for signalling circuit 4 A BS for signalling circuit","Thermal overload class":"Class 20 conforming to IEC 60947-4-1","Connections - terminals":"Control circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² flexible without cable end Control circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² flexible with cable end Control circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² solid without cable end Power circuit: lugs-ring terminals","IP degree of protection":"IP20 conforming to IEC 60529","Temperature compensation":"-20...60 °C","Phase failure sensitivity":"Tripping current 130 % of Ir on two phase, the last one at 0","Product or component type":"Differential thermal overload relay","Auxiliary contact composition":"1 NO + 1 NC","[Ui] rated insulation voltage":"Power circuit: 600 V conforming to CSA Power circuit: 600 V conforming to UL Power circuit: 690 V conforming to IEC 60947-4-1","[Ue] rated operational voltage":"690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1","Ambient air temperature for storage":"-60...70 °C","Thermal protection adjustment range":"9...13 A","Ambient air temperature for operation":"-20...60 °C without derating conforming to IEC 60947-4-1","[Uimp] rated impulse withstand voltage":"6 kV","[Ith] conventional free air thermal current":"5 A for signalling circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c26fccfe3b96f471de64f879632df72d.pdf","sourceUrl":"https://www.se.com/sg/en/product/LRD15166/tesys-deca-thermal-overload-relays-9-13-a-class-20/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LRD15166/alternatives.json"},"ai":{"faq":[{"question":"What is the thermal adjustment range of the LRD15166?","answer":"The thermal protection adjustment range is 9...13 A, with a Class 20 tripping characteristic per IEC 60947-4-1."},{"question":"What standards does the LRD15166 comply with?","answer":"It complies with EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, and CSA C22.2 No 60947-4-1 and 60947-5-1."},{"question":"What is the phase failure sensitivity of this relay?","answer":"The relay trips at 130 % of the set current (Ir) on two phases when the third phase is at zero, providing phase-failure protection for three-phase motors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LRD15166","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/LRD15166 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}}