{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCB1XBLTQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCB1XBLTQ","canonicalUrl":"https://aoctrl.com/schneider/LUCB1XBLTQ","factsUrl":"https://aoctrl.com/api/mcp/products/LUCB1XBLTQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys U, Advanced control unit, LUCB1XBLTQ, 0.25 kW at 400...440 V AC, 24 V DC control, manual reset, IP20 front panel.","salesMarkdown":"## What this TeSys U control unit does in a motor branch The Schneider Electric LUCB1XBLTQ is an advanced control unit in the TeSys U range, designed for basic motor protection with advanced functions and communication capability. It sits on the front face of a TeSys U power base via plug-in mounting, making it a field-swappable logic module for a motor starter or protection assembly. Rated for 0.25 kW at 400...440 V AC 50/60 Hz, it handles a 3-phase self-cooled motor load. The 24 V DC control circuit draws 60 mA sealed (80 mA with LUB32/LUB38 power bases) and peaks at 130 mA during closing with the LUB12 base. Protection coverage includes overload and short-circuit, earth fault, phase failure, and phase imbalance — all with manual reset. The thermal overload class is Class 10 per IEC 60947-6-2 and UL 508, with temperature compensation from -25 to 70 °C. Tripping threshold is set at 14.2 x Ir ±20 %, and the unit is sensitive to phase failure. Immunity to microbreaks is 3 ms, and it withstands voltage dips to 70 % for 500 ms per IEC 61000-4-11. ## Panel fit and environmental ratings IP20 protection on the front panel and wired terminals, IP40 on other faces outside the connection zone. The unit is TH-treated per IEC 60068 for tropical environments. Operating altitude is limited to 2000 m. Vibration resistance: 2 gn (poles open) and 4 gn (poles closed) across 5...300 Hz; shock resistance: 10 gn (poles open) and 15 gn (poles closed). Safe separation of circuits is maintained at 400 V SELV between control/auxiliary and main circuits per IEC 60947-1. Control circuit voltage limits: 20...27 V DC for operation, dropout at 14.5 V DC. Fire resistance: 960 °C for parts supporting live components, 650 °C for other parts per IEC 60695-2-12.","metaTitle":"Schneider Electric LUCB1XBLTQ TeSys U Advanced Control Unit,","metaDescription":"Schneider Electric LUCB1XBLTQ TeSys U advanced control unit for 3-phase motor protection. 0.25 kW at 400-440 V AC, 24 V DC control. Manual reset, earth fault & phase failure protec","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Motor Starters"],"specifications":{"Depth":"60 mm","Range":"TeSys","Reset":"Manual reset","Width":"45 mm","Height":"66 mm","Load type":"3-phase motor - cooling: self-cooled","Standards":"EN 60947-6-2 IEC 60947-6-2 UL 60947-4-1, with phase barrier CSA C22.2 No 60947-4-1, with phase barrier","Fixing mode":"Plug-in (front face)","Product name":"TeSys U","Motor power kW":"0.25 kW at 400...440 V AC 50/60 Hz","Operating time":"35 ms opening with LUB12 for control circuit 35 ms opening with LUB32 for control circuit 35 ms opening with LUB38 for control circuit 70 ms closing with LUB12 for control circuit 70 ms closing with LUB32 for control circuit 70 ms closing with LUB38 for control circuit","Fire resistance":"960 °C parts supporting live components conforming to IEC 60695-2-12 650 °C conforming to IEC 60695-2-12","lifecycle_stage":"current","Heat dissipation":"2 W for control circuit with LUB12 3 W for control circuit with LUB32 3 W for control circuit with LUB38","Range of product":"TeSys U","Shock resistance":"10 gn power poles open conforming to IEC 60068-2-27 15 gn power poles closed conforming to IEC 60068-2-27","Device short name":"LUCB","Network frequency":"40...60 Hz","Compatibility code":"LUCB","Device application":"Motor control Motor protection","Operating altitude":"2000 m","Tripping threshold":"14.2 x Ir +/- 20 %","Protective treatment":"TH conforming to IEC 60068","Utilisation category":"AC-44 AC-43 AC-41","Vibration resistance":"2 gn, 5...300 Hz, power poles open conforming to IEC 60068-2-6 4 gn, 5...300 Hz, power poles closed conforming to IEC 60068-2-6","Thermal overload class":"Class 10 - frequency limit: 40...60 Hz - temperature compensation: -25...70 °C conforming to IEC 60947-6-2 Class 10 - frequency limit: 40...60 Hz - temperature compensation: -25...70 °C conforming to UL 508","IP degree of protection":"IP20 front panel and wired terminals conforming to IEC 60947-1 IP20 other faces conforming to IEC 60947-1 IP40 front panel outside connection zone conforming to IEC 60947-1","Immunity to microbreaks":"3 ms","Main Function Available":"Earth fault protection Protection against overload and short-circuit Manual reset Protection against phase failure and phase imbalance","Immunity to voltage dips":"70 % / 500 ms conforming to IEC 61000-4-11","Phase failure sensitivity":"Yes","Product or component type":"Advanced control unit","Safe separation of circuit":"400 V SELV between the control and auxiliary circuits conforming to IEC 60947-1 400 V SELV between the control or auxiliary circuit and the main circuit conforming to IEC 60947-1","Typical current consumption":"130 mA at 24 V DC I maximum while closing with LUB12 220 mA at 24 V DC I maximum while closing with LUB32 220 mA at 24 V DC I maximum while closing with LUB38 60 mA at 24 V DC I rms sealed with LUB12 80 mA at 24 V DC I rms sealed with LUB32 80 mA at 24 V DC I rms sealed with LUB38","Product specific application":"Basic protection and advanced functions, communication","[Uc] control circuit voltage":"24 V DC","Resistance to fast transients":"2 kV class 3 serial link conforming to IEC 61000-4-4 4 kV class 4 all circuits except for serial link conforming to IEC 61000-4-4","Resistance to radiated fields":"10 V/m 3 conforming to IEC 61000-4-3","[Ui] rated insulation voltage":"690 V conforming to IEC 60947-6-2 600 V conforming to UL 60947-4-1 600 V conforming to CSA C22.2 No 60947-4-1","Control circuit voltage limits":"20...27 V for DC circuit 24 V in operation 14.5 V for DC circuit 24 V drop-out","[Ue] rated operational voltage":"690 V AC","Immunity to radioelectric fields":"10 V conforming to IEC 61000-4-6","Ambient air temperature for storage":"-40...85 °C","Rated Motor Current Adjustment Range":"0.35...1.4 A","Ambient air temperature for operation":"-25...70 °C","Resistance to electrostatic discharge":"8 kV level 3 in open air conforming to IEC 61000-4-2 8 kV level 4 on contact conforming to IEC 61000-4-2","[Uimp] rated impulse withstand voltage":"6 kV conforming to IEC 60947-6-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d55dc82347623f6413a7e494b6cb9827.pdf","sourceUrl":"https://www.se.com/sg/en/product/LUCB1XBLTQ/advanced-control-unit-tesys-u-0-351-4a-3p-motors-protection-diagnostic-class-10-coil-24v-dc-tq10/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCB1XBLTQ/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LUCB1XBLTQ in this component family?","answer":"Within the TeSys U family, the LUCB1XBLTQ is an advanced control unit with manual reset and earth fault protection. A sibling with a different protection profile (e.g., standard overload-only without earth fault) would share the same plug-in footprint but differ in tripping logic. The deciding factor is whether your BOM requires earth fault detection and the advanced function set — if not, a basic control unit may suffice. No direct pin-compatible alternative outside the TeSys U ecosystem exists without rewiring the power base."},{"question":"What compliance documentation does this brand provide for LUCB1XBLTQ (RoHS, REACH, UL, IEC)?","answer":"The LUCB1XBLTQ carries UL 60947-4-1, CSA C22.2 No 60947-4-1, IEC 60947-6-2, and EN 60947-6-2 certifications. The unit is TH-treated per IEC 60068 for tropical environments. Standard Schneider Electric documentation includes a Declaration of Conformity covering the applicable directives; RoHS and REACH declarations are available through the manufacturer's documentation portal."},{"question":"Who supplies LUCB1XBLTQ and how is it quoted for volume purchases?","answer":"The LUCB1XBLTQ is sourced to order through independent industrial automation distribution. Volume pricing and lead time are confirmed at quote time against an RFQ — no standard published price applies. Submit an RFQ with your annual volume and target price to receive a competitive offer."},{"question":"What is LUCB1XBLTQ's listed depth (60 mm) on this component line?","answer":"The LUCB1XBLTQ has a depth of 60 mm, width of 45 mm, and height of 66 mm. This compact footprint fits standard TeSys U power bases and leaves clearance for wiring in a 45 mm-wide DIN-rail slot."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCB1XBLTQ","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/LUCB1XBLTQ 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}}