{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCA05BLTQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCA05BLTQ","canonicalUrl":"https://aoctrl.com/schneider/LUCA05BLTQ","factsUrl":"https://aoctrl.com/api/mcp/products/LUCA05BLTQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys U series, LUCA05BLTQ standard control unit, 1.5 kW at 400...440 V AC, 24 V DC control circuit, IP20 front panel.","salesMarkdown":"The Schneider Electric TeSys U LUCA05BLTQ is a standard control unit for the TeSys U motor starter system. It handles basic motor protection — overload and short-circuit — for a 3-phase motor, self-cooled. At 400...440 V AC 50/60 Hz it's rated for 1.5 kW motor power; at 500 V AC that climbs to 2.2 kW, and at 690 V AC to 3 kW. The tripping threshold is fixed at 14.2 x Ir, with a ±20% tolerance, and it's Class 10 thermal overload. The control voltage limits are 20...27 V DC for operation, with dropout at 14.5 V DC — so a saggy 24 V supply won't cause nuisance dropouts unless it dips below that floor. ## Where it lives in the panel The control unit itself is IP20 on the front panel and wired terminals, IP40 on other faces outside the connection zone. The unit plugs into the front face of the power base, so it's a snap-in swap without disturbing the load wiring. Physical footprint is 45 mm wide, 66 mm tall, 60 mm deep — it tucks into a standard DIN-rail layout without hogging space. Operating altitude tops out at 2000 m, so if you're building a panel for a high-altitude installation, you'll need to derate or choose a different variant. The utilisation categories are AC-41 (resistive), AC-43 (motor starting, plugging, inching), and AC-44 (motor switching with frequent starts). It's phase-failure sensitive — it will trip if one phase drops out, which is a common failure mode that cooks motors. Earth fault protection is also built in. The immunity to microbreaks is 3 ms, meaning a brief power glitch shorter than that won't cause a nuisance trip.","metaTitle":"Schneider TeSys LUCA05BLTQ Standard Control Unit","metaDescription":"Schneider Electric TeSys U LUCA05BLTQ standard control unit for motor protection. Rated 1.5 kW at 400-440V AC, 24 V DC control, IP20.","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":"1.5 kW at 400...440 V AC 50/60 Hz 2.2 kW at 500 V AC 50/60 Hz 3 kW at 690 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-43 AC-41 AC-44","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 phase failure and phase imbalance Manual reset Earth fault protection Protection against overload and short-circuit","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":"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 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":"1.25...5 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/88d0791bdbfb9dac6f3ec57b04ca0524.pdf","sourceUrl":"https://www.se.com/sg/en/product/LUCA05BLTQ/standard-control-unit-tesys-u-1-255a-3p-motors-thermal-magnetic-protection-class-10-coil-24v-dc-tq10/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCA05BLTQ/alternatives.json"},"ai":{"faq":[{"question":"Is the LUCA05BLTQ compatible with the LUB12 power base?","answer":"Yes, the LUCA05BLTQ is designed to plug into the LUB12 power base. The operating times are specified at 35 ms opening and 70 ms closing with the LUB12, and the control circuit current draw is 130 mA maximum during closing with that base."},{"question":"What are the specifications of the LUCA05BLTQ?","answer":"The LUCA05BLTQ is a standard control unit for the TeSys U motor starter system, rated for 1.5 kW at 400...440 V AC, with a 24 V DC control circuit. It provides overload and short-circuit protection, is Class 10 thermal overload rated, and has IP20 front-panel protection. It measures 45 mm wide by 66 mm tall by 60 mm deep."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCA05BLTQ","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/LUCA05BLTQ 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}}