{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LRD10TQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LRD10TQ","canonicalUrl":"https://aoctrl.com/schneider/LRD10TQ","factsUrl":"https://aoctrl.com/api/mcp/products/LRD10TQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca LRD10TQ differential thermal overload relay, 4 to 6 A adjustment, Class 10A, 690 V, bulk qty.","salesMarkdown":"The LRD10TQ is a differential thermal overload relay from the TeSys Deca range, designed for motor protection in three-phase circuits. Its thermal protection adjustment range of 4 to 6 A sets the full-load current window for the motor it guards — set the dial to the motor's nameplate FLA, and the Class 10A trip curve (per IEC 60947-4-1) will open the contactor within 10 seconds at 7.2× Ir, protecting against locked-rotor or sustained overload without nuisance tripping on normal starts. The relay is rated for power circuits up to 690 V AC (IEC) and 600 V (UL/CSA), with an impulse withstand voltage of 6 kV. Phase failure sensitivity is built in: if one phase drops to 30 % of Ir while the others remain at Ir, the relay trips — critical for preventing single-phasing damage on delta-connected motors. Mounting options include plate or rail (with specific accessories) or directly under the contactor — typical for TeSys D or F contactors in motor starter stacks. The signalling circuit (1 NO + 1 NC auxiliary contacts) is rated at 3 A at 120 V AC-15 and 0.22 A at 125 V DC-13, sufficient for PLC inputs or alarm annunciation. ## Integration notes The LRD10TQ mounts under a TeSys contactor (e.g., LC1D or LC1F series) or on a DIN rail with the appropriate adapter. Screw-clamp terminals accept control and power wiring at 1.7 N·m tightening torque.","metaTitle":"Schneider Electric LRD10TQ TeSys Deca Thermal Overload Relay","metaDescription":"Schneider Electric LRD10TQ TeSys Deca differential thermal overload relay, 4-6 A adjustment, Class 10A, 690 V, UL/CSA/IEC. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Depth":"70 mm","Range":"TeSys TeSys Deca","Width":"45 mm","title":"LRD10TQ","Height":"66 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 GB/T 14048.4 GB/T 14048.5 EN 50495","description":"Thermal overload relays, TeSys Deca, 690V, 4 to 6A, class 10A, bulk qty","Control type":"Red push-button: stop Blue push-button: reset","Network type":"AC DC","Product name":"TeSys LRD TeSys Deca","lifecycle_stage":"current","Mounting support":"Plate, with specific accessories Rail, with specific accessories Under contactor","Quantity per set":"Set of 10","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: 1.7 N.m - on screw clamp terminals","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 0.22 A at 125 V DC-13 for signalling circuit","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","IP degree of protection":"IP20 conforming to IEC 60529","Temperature compensation":"-20...60 °C","Phase failure sensitivity":"Tripping current I 30 % of Ir on one phase, the others at Ir 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: 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":"4...6 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/59e3f878a9a0dae5c47015a6d10915e3.pdf","sourceUrl":"https://www.se.com/be/en/product/LRD10TQ/thermal-overload-relays-tesys-deca-690v-4-to-6a-class-10a-bulk-qty/"},"ai":{"faq":[{"question":"What standards does the LRD10TQ 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 and 60947-5-1, GB/T 14048.4 and 14048.5, and EN 50495."},{"question":"What is the thermal adjustment range of the LRD10TQ?","answer":"The thermal protection adjustment range is 4 to 6 A, set via the dial on the front of the relay."},{"question":"What is the LRD10TQ's trip class?","answer":"It is Class 10A per IEC 60947-4-1, meaning it will trip within 10 seconds at 7.2× the current setting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LRD10TQ","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/LRD10TQ when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}