{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LR3D3323","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LR3D3323","canonicalUrl":"https://aoctrl.com/schneider/LR3D3323","factsUrl":"https://aoctrl.com/api/mcp/products/LR3D3323","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca thermal overload relay, LR3D3323, 23-32 A adjustment range, Class 10A, non-differential, IP20.","salesMarkdown":"The LR3D3323 is a non-differential thermal overload relay from the TeSys Deca series, designed for motor protection in industrial control panels. It provides adjustable thermal protection from 23 to 32 A with a Class 10A tripping curve, meaning it will trip within 10 seconds at 7.2× the set current — fast enough to protect standard induction motors during a stall or locked-rotor condition without nuisance tripping on normal starts. The EverLink BTR screw terminals on the power circuit accept 1 to 35 mm² conductors, while the control circuit uses spring terminals for 1 to 2.5 mm² — a mixed-termination design that suits both panel-builder preference and field retrofit. The 23-32 A adjustment range covers a common motor current band for 7.5 to 15 kW motors at 400 V three-phase. The Class 10A overload class is the standard for general-purpose motor starting — it allows enough inrush time for a direct-on-line start but clears quickly on a jam. Phase-failure sensitivity is built in: the relay trips at 130 % of the set current (Ir) on two phases when the third drops to zero. This protects motors against single-phasing, which can overheat windings in seconds under load. Temperature compensation is active from -20 to 60 °C, so the trip curve stays accurate across the panel's ambient range without manual derating. The LR3D3323 carries approvals across the major industrial regions: EN/IEC 60947-4-1 and 60947-5-1, UL 60947-4-1 and 60947-5-1, CSA C22.2 No 60947-4-1 and 60947-5-1, plus GB/T 14048.4 and GB/T 14048.5 for the Chinese market. Rated insulation voltage (Ui) is 600 V for UL/CSA and 690 V for IEC, so it fits 480 V and 600 V North American panels as well as 690 V European installations. Flame retardance is V1 per UL 94. Dielectric strength tested at 1.89 kV at 50 Hz per IEC 60947-1. The signalling circuit is rated for 5 A conventional free air thermal current (Ith), with fuse protection specified at 4 A gG or BS.","metaTitle":"Schneider Electric LR3D3323 TeSys Deca Thermal Overload Rela","metaDescription":"TeSys Deca thermal overload relay LR3D3323, 23-32 A range, Class 10A. Active production. UL/CSA/IEC certified. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Depth":"4.8 in (123 mm)","Range":"TeSys","Width":"2.2 in (55 mm)","title":"LR3D3323","Height":"2.8 in (70 mm)","Category":"22347-CONTACTOR,D-LINE,OVERLOADS-NEW","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","description":"TeSys Deca thermal overload relays - 23...32 A - class 10A","Control type":"Red push-button stop Blue push-button reset","Network type":"DC AC","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":"LR3D","Network Frequency":"0...400 Hz","Relay application":"Motor protection","Tightening torque":"Power circuit 44.3 lbf.in (5 N.m) EverLink BTR screw connectors","Climatic withstand":"IACS E10","Tripping threshold":"1.14 +/- 0.06 Ir IEC 60947-4-1","Dielectric strength":"1.89 kV 50 Hz IEC 60947-1","Permissible current":"0.95 A 380 V AC-15 signalling circuit 0.06 A 440 V DC-13 signalling circuit","Mechanical robustness":"Shocks15 Gn for 11 ms IEC 60068-2-7 Vibrations4 gn IEC 60068-2-6","Associated fuse rating":"4 A gG for signalling circuit 4 A BS for signalling circuit","Thermal overload class":"Class 10A IEC 60947-4-1","Connections - terminals":"Power circuit EverLink BTR screw connectors 1 0.002...0.05 in² (1...35 mm²) flexible without cable end Power circuit EverLink BTR screw connectors 1 0.002...0.05 in² (1...35 mm²) flexible with cable end Power circuit EverLink BTR screw connectors 1 0.002...0.05 in² (1...35 mm²) solid without cable end Control circuit spring terminals 1 0.002...0.004 in² (1...2.5 mm²) solid without cable end Control circuit spring terminals 1 0.002...0.004 in² (1...2.5 mm²) flexible without cable end","IP degree of protection":"IP20 conforming to IEC 60529","Temperature compensation":"-4...140 °F (-20...60 °C)","Phase failure sensitivity":"Tripping current 130 % of Ir on two phase, the last one at 0","Product or Component Type":"Non differential thermal overload relay","Auxiliary contact composition":"1 NO + 1 NC","[Ui] rated insulation voltage":"Power circuit 600 V CSA Power circuit 600 V UL Power circuit 690 V IEC 60947-4-1","[Ue] rated operational voltage":"690 V AC 0...400 Hz power circuit IEC 60947-4-1","Ambient Air Temperature for Storage":"-76...158 °F (-60...70 °C)","Thermal protection adjustment range":"23...32 A","Ambient air temperature for operation":"-4...140 °F (-20...60 °C) without derating IEC 60947-4-1","[Uimp] rated impulse withstand voltage":"6 kV","[Ith] conventional free air thermal current":"5 A signalling circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3500d055b124e9ac088333a3c8a90579.pdf","sourceUrl":"https://www.se.com/th/en/product/LR3D3323/tesys-deca-thermal-overload-relays-23-32-a-class-10a/"},"ai":{"faq":[{"question":"What is the thermal adjustment range of the LR3D3323?","answer":"The LR3D3323 adjusts from 23 to 32 A. This covers motor full-load currents for typical 7.5-15 kW motors at 400 V three-phase."},{"question":"What standards does the LR3D3323 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, and GB/T 14048.4 and 14048.5. Rated insulation voltage is 600 V (UL/CSA) and 690 V (IEC)."},{"question":"Does the LR3D3323 have phase failure protection?","answer":"Yes. It trips at 130 % of the set current (Ir) on two phases when the third phase drops to zero, protecting the motor from single-phasing damage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LR3D3323","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/LR3D3323 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}}