{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LRD08S207","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LRD08S207","canonicalUrl":"https://aoctrl.com/schneider/LRD08S207","factsUrl":"https://aoctrl.com/api/mcp/products/LRD08S207","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca LRD08S207 differential thermal overload relay, 2.5-4 A adjustment range, class 10A, IP20, 1 NO + 1 NC auxiliary contacts.","salesMarkdown":"The Schneider Electric LRD08S207 is a TeSys Deca differential thermal overload relay for motor protection, with a thermal protection adjustment range of 2.5 to 4 A and a class 10A tripping curve per IEC 60947-4-1. It provides phase failure sensitivity, tripping at 130% of Ir on two phases when the third is at zero, per IEC 60947-4-1, which means it catches single-phasing conditions that can burn out a motor winding. The relay mounts under a contactor or on a plate or rail with specific accessories, and its IP20 finger-safe enclosure suits installation inside a control cabinet. ## Sourcing reality — obsolete, sourced to order No official direct replacement is listed in the lifecycle record. The 2.5 to 4 A adjustment range sets the motor full-load current (FLC) window; set the dial to match the motor nameplate FLC for proper thermal protection. Auxiliary contact composition is 1 NO + 1 NC, providing one normally-open and one normally-closed signal path for the control circuit — enough to wire a trip alarm and a reset interlock. The signalling circuit is rated for 3 A at 120 V AC-15 (inductive), 1.5 A at 240 V AC-15, and 0.1 A at 250 V DC-13 — these are the contact ratings for the auxiliary contacts under different load types, so verify your control voltage and load type against these curves. Rated insulation voltage (Ui) is 690 V per IEC 60947-4-1 and 600 V per UL/CSA, so the relay is suitable for 480 V and 600 V motor circuits in North American and IEC panels. Dielectric strength is 1.89 kV at 50 Hz per IEC 60947-1, confirming basic insulation coordination for 690 V systems.","metaTitle":"TeSys LRD08S207 thermal overload relay, 2.5-4 A, class 10A","metaDescription":"Obsolete TeSys LRD08S207 differential thermal overload relay. 2.5-4 A adjustment range, class 10A, phase failure sensitive. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Overload Relays"],"specifications":{"Depth":"70 mm","Range":"TeSys","Width":"45 mm","Height":"66 mm","Standards":"EN/IEC 60947-4-1 EN/IEC 60947-5-1 EN 45545","Control type":"Red push-button: stop Blue push-button: reset selector switch: manual or automatic reset","Network type":"AC DC","Product name":"TeSys LRD TeSys Deca","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":"LRD","Network frequency":"0...400 Hz","Relay application":"Motor protection","Tightening torque":"Signalling circuit: 1.7 N.m Power circuit: 1.7 N.m","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":"3 A at 120 V AC-15 for signalling circuit 1.5 A at 240 V AC-15 for signalling circuit 0.95 A at 380 V AC-15 for signalling circuit 0.72 A at 500 V AC-15 for signalling circuit 0.22 A at 125 V DC-13 for signalling circuit 0.1 A at 250 V DC-13 for signalling circuit","Signalling function":"Relay trip indicator","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 10A conforming to IEC 60947-4-1","Connections - terminals":"Signalling circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² flexible without cable end Signalling circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² flexible with cable end Signalling circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² solid Power circuit: screw clamp terminals 1 cable(s) 1.5...10 mm² flexible without cable end Power circuit: screw clamp terminals 1 cable(s) 1...4 mm² flexible with cable end Power circuit: screw clamp terminals 1 cable(s) 1...6 mm² solid","IP degree of protection":"IP20 conforming to IEC 60529","Temperature compensation":"-40...60 °C","Phase failure sensitivity":"Tripping current 130 % of Ir on two phase, the last one at 0 conforming to IEC 60947-4-1","Product or component type":"Differential thermal overload relay","Auxiliary contact composition":"1 NO + 1 NC","[Ui] rated insulation voltage":"Power circuit: 690 V conforming to IEC 60947-4-1 Power circuit: 600 V conforming to CSA Power circuit: 600 V conforming to UL","[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":"2.5...4 A","Ambient air temperature for operation":"-40...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/d440595561f3587b27d6ce0ddc19fc5a.pdf","sourceUrl":"https://www.se.com/eg/en/product/LRD08S207/tesys-deca-thermal-overload-relays-2-54-a-class-10a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LRD08S207/alternatives.json"},"ai":{"faq":[{"question":"What is the thermal protection adjustment range of the LRD08S207?","answer":"The adjustment range is 2.5 to 4 A, set via the dial on the front of the relay."},{"question":"What standards does the LRD08S207 comply with?","answer":"It complies with EN/IEC 60947-4-1, EN/IEC 60947-5-1, and EN 45545, with flame retardance V1 per UL 94 and climatic withstand per IACS."},{"question":"What is the overload class of the LRD08S207?","answer":"It is Class 10A per IEC 60947-4-1, meaning it trips within 10 seconds at 7.2× the current setting."},{"question":"How do I source the obsolete LRD08S207?","answer":"Since it is obsolete, sourcing is through the surplus and broker channel. Submit an RFQ for a quote on available inventory."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LRD08S207","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/LRD08S207 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}}