{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LRD15226","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LRD15226","canonicalUrl":"https://aoctrl.com/schneider/LRD15226","factsUrl":"https://aoctrl.com/api/mcp/products/LRD15226","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca LRD15226 differential thermal overload relay, 17...25 A adjustment range, Class 20, obsolete.","salesMarkdown":"The Schneider LRD15226 is a differential thermal overload relay from the TeSys Deca series, designed for motor protection in industrial control panels. Its thermal protection adjustment range spans 17 to 25 A, so it directly protects motors with a full-load current in that band. The differential mechanism detects phase-loss conditions: it trips at 130 % of the set current on two phases when the third is at zero — a common failure mode in blown-fuse or broken-wire scenarios. The relay carries 1 NO + 1 NC auxiliary contacts rated at 1.5 A at 240 V AC-15 for signalling circuits, and 0.1 A at 250 V DC-13. These are the contacts that interrupt the contactor coil circuit on a trip, so the ratings govern what control voltage and load the relay can switch directly. Because it is obsolete, there is no direct drop-in successor with the same order code. A cross-reference to a current-production equivalent requires verifying the mounting footprint (mounts under the contactor or on a plate/rail with specific accessories), the 17-25 A adjustment range, and the Class 20 trip curve — any substitution must match these three parameters to avoid a panel rework. The relay is certified to EN/IEC 60947-4-1 and 60947-5-1, plus UL 60947-4-1 and 60947-5-1, and CSA C22.2 No 60947-4-1 and 60947-5-1. This means it is accepted in IEC-mark and North American (UL/CSA) jurisdictions for motor starter applications — no additional agency review needed for a panel build destined for those markets. Rated insulation voltage (Ui) is 600 V for CSA/UL and 690 V for IEC, with an impulse withstand voltage (Uimp) of 6 kV. The dielectric strength test is 1.89 kV at 50 Hz. Flame retardance is V1 per UL 94, and fire resistance is 850 °C per IEC 60695-2-1. IP20 protection means it is finger-safe but not sealed — it belongs inside an enclosure, not in a washdown or outdoor location.","metaTitle":"Schneider LRD15226 TeSys Deca Thermal Overload Relay, 17-25","metaDescription":"Obsolete Schneider LRD15226 TeSys Deca thermal overload relay, 17-25 A adjustment range, Class 20 motor protection. Sourced to order against RFQ. UL/CSA/IEC certified.","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":"17...25 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/09a3dfa4e458b2485d166f2c7cb8af46.pdf","sourceUrl":"https://www.se.com/vn/en/product/LRD15226/tesys-deca-thermal-overload-relays-17-25-a-class-20/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LRD15226/alternatives.json"},"ai":{"faq":[{"question":"What is the adjustment range of the LRD15226?","answer":"The thermal protection adjustment range is 17 to 25 A. This is the range of motor full-load current the relay can be set to protect."},{"question":"What standards does the LRD15226 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. This covers both IEC and North American motor starter applications."},{"question":"What does Class 20 protection mean?","answer":"Class 20 means the relay will trip within 20 seconds at 7.2 times the current setting. It is the standard thermal class for general-purpose induction motors like those driving pumps, fans, and conveyors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LRD15226","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/LRD15226 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}}