{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCB12FUTQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCB12FUTQ","canonicalUrl":"https://aoctrl.com/schneider/LUCB12FUTQ","factsUrl":"https://aoctrl.com/api/mcp/products/LUCB12FUTQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys U advanced control unit LUCB12FUTQ, manual reset, 5.5 kW at 400...440 V AC, plug-in front face.","salesMarkdown":"The Schneider LUCB12FUTQ is an advanced control unit in the TeSys U range — the brain of a motor starter that combines protection and control in one plug-in module. It sits on the front face of a TeSys U power base and handles the logic: overload protection, short-circuit detection, phase failure sensing, and earth fault protection, all in one package. It's rated for 5.5 kW at 400...440 V AC, and can go up to 9 kW at 690 V AC — so it covers a solid spread of standard three-phase motor loads, from pumps and fans to small conveyors. The thermal overload is Class 10, meaning it trips fast enough to protect a motor during a stalled-rotor condition without nuisance tripping on a normal start. The control voltage is 110...240 V AC or 110...220 V DC, which is common for panel supplies in most industrial plants. Manual reset means someone has to go to the starter and push the button after a trip — that's the safe choice for unattended or hazardous-area machinery where you don't want an automatic restart. The LUCB12FUTQ plugs into a TeSys U power base (like the LUB12 or LUB32) — no wiring between the control unit and the power base, just snap it on. That plug-in design means you can swap a control unit without touching the power wiring, which saves time during commissioning or if you need to change the protection settings later. ## Protection and performance details The unit provides protection against phase failure and phase imbalance, earth faults, overload, and short-circuit — all the essentials for a three-phase motor. The tripping threshold is 14.2 x Ir ±20%, which is typical for magnetic short-circuit protection in a motor starter. Operating time is 35 ms opening and 50 ms closing with the LUB12, LUB32, or LUB38 control circuit — fast enough for most motor protection applications. The unit is immune to micro-breaks up to 3 ms and voltage dips down to 70% for 500 ms, so it won't nuisance-trip on a brief line disturbance.","metaTitle":"Schneider LUCB12FUTQ TeSys U Advanced Control Unit","metaDescription":"Schneider LUCB12FUTQ TeSys U advanced control unit. Motor protection up to 5.5 kW at 400 V. Manual reset, Class 10 overload, plug-in mount. Current production.","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":"5.5 kW at 400...440 V AC 50/60 Hz 5.5 kW at 500 V AC 50/60 Hz 9 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 50 ms closing with LUB12 for control circuit 50 ms closing with LUB32 for control circuit 50 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-41 AC-43 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":"Advanced 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":"280 mA at 110...240 V AC I maximum while closing with LUB12 280 mA at 110...240 V AC I maximum while closing with LUB32 280 mA at 110...240 V AC I maximum while closing with LUB38 280 mA at 110...220 V DC I maximum while closing with LUB12 280 mA at 110...220 V DC I maximum while closing with LUB32 280 mA at 110...220 V DC I maximum while closing with LUB38 35 mA at 110...240 V AC I rms sealed with LUB12 25 mA at 110...240 V AC I rms sealed with LUB32 25 mA at 110...240 V AC I rms sealed with LUB38 35 mA at 110...220 V DC I rms sealed with LUB12 25 mA at 110...220 V DC I rms sealed with LUB32 25 mA at 110...220 V DC I rms sealed with LUB38","Product specific application":"Basic protection and advanced functions, communication","[Uc] control circuit voltage":"110...220 V DC 110...240 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":"88...264 V for AC circuit 110...240 V in operation 88...242 V for DC circuit 110...220 V in operation 55 V for AC circuit 110...240 V drop-out 55 V for DC circuit 110...220 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":"3...12 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/abc00b0329bde0565d503257b0f9d63a.pdf","sourceUrl":"https://www.se.com/sg/en/product/LUCB12FUTQ/advanced-control-unit-tesys-u-312a-3p-motors-protection-diagnostic-class-10-coil-110240v-ac-dc-tq10/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCB12FUTQ/alternatives.json"},"ai":{"faq":[{"question":"Is LUCB12FUTQ compatible with LUB12?","answer":"Yes, the LUCB12FUTQ is designed to plug into the LUB12 power base (as well as LUB32 and LUB38). The operating times are specified with those bases: 35 ms opening and 50 ms closing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCB12FUTQ","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/LUCB12FUTQ 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}}