{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCA18BLTQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCA18BLTQ","canonicalUrl":"https://aoctrl.com/schneider/LUCA18BLTQ","factsUrl":"https://aoctrl.com/api/mcp/products/LUCA18BLTQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys U standard control unit, LUCA18BLTQ, 24 V DC control circuit, 7.5 kW at 400 V AC, plug-in front face.","salesMarkdown":"## TeSys U standard control unit for motor protection The Schneider LUCA18BLTQ is a standard control unit from the TeSys U range, designed for basic motor protection and control of 3-phase motors. It handles motor power up to 7.5 kW at 400...440 V AC, 9 kW at 500 V, and 15 kW at 690 V, covering a wide range of industrial motor loads like pumps, fans, and conveyors. The control circuit runs on 24 V DC, with a typical sealed current draw of 80 mA and a peak closing current of 220 mA. Drop-out occurs at 14.5 V DC, ensuring reliable operation within a 20...27 V DC window. This unit provides earth fault protection, overload and short-circuit protection, phase failure and phase imbalance detection, with manual reset. The tripping threshold is set at 14.2 x Ir ±20 %, and the thermal overload class is Class 10, temperature-compensated from -25 to 70 °C per IEC 60947-6-2 and UL 508. Mounts via plug-in front face onto the TeSys U power base or starter controller. Dimensions are 45 mm wide, 66 mm high, and 60 mm deep — fits standard 45 mm DIN-rail spacing. IP20 on the front panel and wired terminals; IP40 on the front panel outside the connection zone per IEC 60947-1. Compatible with LUB32 and LUB38 control circuit modules. Opening time is 35 ms, closing time 70 ms with either module. Heat dissipation is 3 W for the control circuit. Approvals include EN 60947-6-2, IEC 60947-6-2, UL 60947-4-1 (with phase barrier), and CSA C22.2 No 60947-4-1 (with phase barrier). Safe separation of circuits is 400 V SELV between control/auxiliary and main circuits per IEC 60947-1.","metaTitle":"Schneider LUCA18BLTQ TeSys U Control Unit, 24 V DC, 7.5 kW","metaDescription":"Schneider LUCA18BLTQ TeSys U standard control unit. 24 V DC coil, 7.5 kW at 400 V. Active production. Sourced to order against RFQ.","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":"Earth fault protection Protection against overload and short-circuit 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","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 DC I maximum while closing with LUB32 220 mA at 24 V DC I maximum while closing with LUB38 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 requirements for motor starters: overload and short-circuit","[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":"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/69b406cb52607b3f032775e1ff5eb5cd.pdf","sourceUrl":"https://www.se.com/sg/en/product/LUCA18BLTQ/standard-control-unit-tesys-u-4-518a-3p-motors-thermal-magnetic-protection-class-10-coil-24v-dc-tq10/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCA18BLTQ/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between LUCA18BLTQ and LUCA18BL?","answer":"The LUCA18BLTQ is a standard control unit for basic motor protection (overload, short-circuit, earth fault, phase failure). The LUCA18BL is a different variant within the TeSys U family; the key difference is the LUCA18BLTQ includes earth fault protection and phase imbalance detection as standard functions."},{"question":"Is LUCA18BLTQ compatible with LUB32?","answer":"Yes, the LUCA18BLTQ is compatible with both LUB32 and LUB38 control circuit modules, with 35 ms opening and 70 ms closing times for either."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCA18BLTQ","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/LUCA18BLTQ 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}}