{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LRD14TQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LRD14TQ","canonicalUrl":"https://aoctrl.com/schneider/LRD14TQ","factsUrl":"https://aoctrl.com/api/mcp/products/LRD14TQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca LRD14TQ differential thermal overload relay, 7-10 A adjustment range, Class 10A, 1 NO + 1 NC auxiliary contacts, screw clamp terminals.","salesMarkdown":"Its thermal protection adjustment range covers 7 to 10 A, with a Class 10A tripping curve that matches standard motor start profiles — meaning it allows the motor to start without nuisance tripping but still protects against sustained overloads. The relay provides one normally-open and one normally-closed auxiliary contact (1 NO + 1 NC), used to signal the overload condition back to the control circuit. The signalling circuit is rated for 3 A at 120 V AC-15 and 0.22 A at 125 V DC-13, which covers most PLC input and contactor coil loads. It complies with EN/IEC 60947-4-1 and 60947-5-1, plus UL 60947-4-1 and CSA C22.2 equivalents, so it is accepted in panels destined for North American and European installations. The IP20 finger-safe enclosure suits enclosure-mounting behind a panel door. The 7-10 A adjustment range sets the motor full-load current (FLC) window. A motor drawing 8 A FLC lands in the middle of the range, leaving headroom for the 1.14 ± 0.06 Ir tripping threshold — the relay will trip at roughly 9.1 A after a Class 10A delay, which is the standard protection for a motor that reaches full speed within 10 seconds. Phase-failure sensitivity is built in: if one phase drops to 30 % of the set current while the other two run at Ir, the relay trips. This is the differential function that distinguishes a thermal overload relay from a simple bimetallic strip — it catches single-phasing, which is a common cause of motor burnouts in field-distributed power. The relay mounts directly under a TeSys contactor, on a plate with specific accessories, or on a DIN rail with the correct adapter kit. Screw-clamp terminals on both power and control circuits accept the tightening torque of 1.7 N.m. The control circuit uses a red push-button for stop and a blue push-button for reset — a colour convention that helps the field technician identify the function without tracing wires. The relay is temperature-compensated from -20 to 60 °C, so the trip curve stays accurate across the operating range of a typical enclosure.","metaTitle":"Schneider Electric LRD14TQ TeSys Deca Thermal Overload Relay","metaDescription":"Schneider Electric LRD14TQ TeSys Deca thermal overload relay. 7-10 A range, Class 10A, 1 NO + 1 NC. Obsolete; 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 TeSys Deca","Width":"45 mm","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","Control type":"Red push-button: stop Blue push-button: reset","Network type":"DC AC","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":"7...10 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/faa4b8c74e4524b78f287d61f07a2db8.pdf","sourceUrl":"https://www.se.com/sa/en/product/LRD14TQ/thermal-overload-relay-tesys-deca-690vac-7-to-10a-1no+1nc-class-10a-screw-clamp-bulk-qty/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LRD14TQ/alternatives.json"},"ai":{"faq":[{"question":"What is the thermal protection adjustment range of the LRD14TQ?","answer":"The adjustment range is 7 to 10 A. This sets the motor full-load current window for the thermal overload protection."},{"question":"What auxiliary contacts does the LRD14TQ have?","answer":"It has one normally-open and one normally-closed auxiliary contact (1 NO + 1 NC), rated for 3 A at 120 V AC-15 and 0.22 A at 125 V DC-13 for the signalling circuit."},{"question":"What standards does the LRD14TQ 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, GB/T 14048.5, and EN 50495."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LRD14TQ","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/LRD14TQ 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}}