{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCA1XBTQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCA1XBTQ","canonicalUrl":"https://aoctrl.com/schneider/LUCA1XBTQ","factsUrl":"https://aoctrl.com/api/mcp/products/LUCA1XBTQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys U standard control unit, LUCA1XBTQ, 24 V AC control circuit, 0.25 kW at 400...440 V AC, plug-in front face.","salesMarkdown":"## What this control unit does in a TeSys U starter The LUCA1XBTQ is a standard control unit for the TeSys U motor-starter system. It handles basic protection requirements: overload, short-circuit, phase failure, phase imbalance, and earth fault. The 24 V AC control circuit draws 70 mA sealed (90 mA with larger LUB power bases) and opens the power poles in 35 ms. That 35 ms opening time means the starter clears a fault fast enough to limit let-through energy on a 0.25 kW motor at 400 V — the typical rating here. The unit plugs into the front face of a TeSys U power base (LUB12, LUB32, or LUB38). No DIN-rail space consumed beyond the base itself. Dimensions are 45 mm wide, 66 mm high, 60 mm deep — the depth is the projection from the power-base face, so plan for 60 mm clearance in front of the DIN rail. IP20 on the front panel and wired terminals; IP40 outside the connection zone. Rated for AC-44, AC-41, and AC-43 utilisation categories per IEC 60947-6-2. AC-44 is the toughest — switching motors with frequent inching and plugging. The tripping threshold is 14.2 x Ir ±20%, which means the magnetic short-circuit release picks up at roughly 14 times the set overload current. ## Compliance and environmental tolerance Certified to EN/IEC 60947-6-2, UL 60947-4-1, and CSA C22.2 No 60947-4-1 (with phase barrier). Rated insulation voltage 690 V (IEC) / 600 V (UL/CSA). Safe separation of control and main circuits at 400 V SELV. Fire resistance of 960 °C on live-part supports, 650 °C elsewhere. TH protective treatment per IEC 60068 for tropical environments. Immunity to microbreaks up to 3 ms and voltage dips down to 70% for 500 ms — keeps the starter online through brief line disturbances.","metaTitle":"Schneider Electric LUCA1XBTQ TeSys U Standard Control Unit,","metaDescription":"Standard control unit for TeSys U motor starter. 24 V AC control, 0.25 kW at 400 V. Current lifecycle stage, sourced to order. UL/CSA/IEC certified.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Motor Starters"],"specifications":{"Depth":"60 mm","Range":"TeSys","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":"LUCA","Network frequency":"40...60 Hz","Compatibility code":"LUCA","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-41 AC-43","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":"Protection against overload and short-circuit Manual reset Protection against phase failure and phase imbalance Earth fault protection","Immunity to voltage dips":"70 % / 500 ms conforming to IEC 61000-4-11","Phase failure sensitivity":"Yes","Product or component type":"Standard control unit","Non-dissipating shock wave":"1 kV serial mode conforming to IEC 60947-6-2 2 kV common mode conforming to IEC 60947-6-2","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":"140 mA at 24 V AC I maximum while closing with LUB12 220 mA at 24 V AC I maximum while closing with LUB32 220 mA at 24 V AC I maximum while closing with LUB38 70 mA at 24 V AC I rms sealed with LUB12 90 mA at 24 V AC I rms sealed with LUB32 90 mA at 24 V AC I rms sealed with LUB38","Product specific application":"Basic protection requirements for motor starters: overload and short-circuit","[Uc] control circuit voltage":"24 V AC","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...26.5 V for AC circuit 24 V in operation 14.5 V for AC 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/f95b7b4e165f031da19283c700e732cc.pdf","sourceUrl":"https://www.se.com/sg/en/product/LUCA1XBTQ/standard-control-unit-tesys-u-0-351-4a-3p-motors-thermal-magnetic-protection-class-10-coil-24v-ac-tq10/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCA1XBTQ/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LUCA1XBTQ and what is the lead time?","answer":"The LUCA1XBTQ is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead time."},{"question":"What is the closest alternative to LUCA1XBTQ in the TeSys U family?","answer":"The LUCA1XBTQ is the standard control unit for 24 V AC control. The advanced control unit (LUCA1XBTM) adds additional protection functions like ground-fault alarm and thermal-memory retention, but shares the same footprint and power-base compatibility. Choose the standard unit for basic overload and short-circuit protection; choose the advanced unit if you need alarm outputs or memory retention after a power loss."},{"question":"What compliance documentation does Schneider provide for LUCA1XBTQ?","answer":"The LUCA1XBTQ carries UL 60947-4-1, CSA C22.2 No 60947-4-1, and IEC 60947-6-2 certifications. RoHS and REACH declarations are standard from Schneider Electric for the TeSys U range."},{"question":"What is LUCA1XBTQ's depth?","answer":"The LUCA1XBTQ has a depth of 60 mm measured from the front face of the TeSys U power base. Plan for 60 mm clearance in front of the DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCA1XBTQ","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/LUCA1XBTQ 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}}