{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCA18BTQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCA18BTQ","canonicalUrl":"https://aoctrl.com/schneider/LUCA18BTQ","factsUrl":"https://aoctrl.com/api/mcp/products/LUCA18BTQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys U standard control unit LUCA18BTQ, 24 V AC control, motor protection up to 15 kW at 690 V, for plug-in base.","salesMarkdown":"The Schneider LUCA18BTQ is a standard control unit for the TeSys U motor-starter system. It handles basic protection requirements — overload, short-circuit, earth fault, phase failure and phase imbalance — and resets manually. Rated for 7.5 kW at 400...440 V AC, 9 kW at 500 V, and 15 kW at 690 V, it covers a wide motor-power band across European and North American line voltages. Control voltage is 24 V AC, with a 20...26.5 V operating window and a 14.5 V drop-out threshold. The control circuit draws 220 mA peak at close and 90 mA sealed (with either LUB32 or LUB38 control-circuit interfaces). That sealed draw matters for transformer sizing in a multi-starter panel. The utilisation categories — AC-41, AC-43, AC-44 — tell you this unit is rated for switching and protecting motor loads under normal and occasional starting conditions (AC-43 covers frequent starts, AC-44 covers inching/plugging). That is not a resistive-load rating; if you are switching heaters or lighting, the AC-41 category covers it, but the part is optimised for motor duty. The LUCA18BTQ itself is a control unit — it does not include the power base or the coil. It plugs into the front face of a TeSys U power base (like the LUCM series), and the control circuit needs a separate LUB32 or LUB38 interface module to connect the 24 V AC supply. If you are ordering for a new build, make sure the BOM also carries the matching power base and the control-circuit interface. The TeSys U platform has a broad installed base, so the LUCA18BTQ is a common BOM line for panel builders maintaining or extending existing TeSys U starter assemblies. If you are stocking spares for a line that already uses TeSys U, this control unit is a direct drop-in replacement for the same rating. The unit carries approvals under EN/IEC 60947-6-2, UL 60947-4-1, and CSA C22.2 No 60947-4-1 (with phase barriers). The front panel is IP20 (finger-safe), and the front panel outside the connection zone is IP40. Other faces are IP20 as well. The control and auxiliary circuits are safely separated at 400 V SELV from the main circuit per IEC 60947-1. That simplifies panel wiring — you can run the 24 V AC control wiring alongside the power conductors without extra insulation spacing, as long as the panel design respects the SELV limits.","metaTitle":"Schneider LUCA18BTQ TeSys U Control Unit, 7.5 kW at 400 V","metaDescription":"Schneider Electric TeSys U standard control unit LUCA18BTQ. Motor protection (overload, short-circuit, phase failure). 24 V AC control. Active lifecycle.","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":"7.5 kW at 400...440 V AC 50/60 Hz 9 kW at 500 V AC 50/60 Hz 15 kW at 690 V AC 50/60 Hz","Operating time":"35 ms opening with LUB32 for control circuit 35 ms opening with LUB38 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":"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-41 AC-44 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 Earth fault protection Protection against phase failure and phase imbalance Manual reset","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":"220 mA at 24 V AC I maximum while closing with LUB32 220 mA at 24 V AC I maximum while closing with LUB38 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":"4.5...18 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/cbb6a71b2e7fbbbd0b5b543622705bda.pdf","sourceUrl":"https://www.se.com/sg/en/product/LUCA18BTQ/standard-control-unit-tesys-u-4-518a-3p-motors-thermal-magnetic-protection-class-10-coil-24v-ac-tq10/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCA18BTQ/alternatives.json"},"ai":{"faq":[{"question":"Does LUCA18BTQ include the coil?","answer":"No. The LUCA18BTQ is a standard control unit only — it does not include the power base or the control circuit coil. You need a separate TeSys U power base (e.g., LUCM series) and a control-circuit interface module (LUB32 or LUB38) to complete the starter assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCA18BTQ","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/LUCA18BTQ 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}}