{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCB12FU","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCB12FU","canonicalUrl":"https://aoctrl.com/schneider/LUCB12FU","factsUrl":"https://aoctrl.com/api/mcp/products/LUCB12FU","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Ultra advanced control unit, Type LUCB12FU, 110…240 V AC/DC control circuit, manual reset, motor protection up to 5.5 kW at 400 V.","salesMarkdown":"The Schneider LUCB12FU is the advanced control unit for the TeSys Ultra range, handling protection and control for three-phase motors. It integrates overload, short-circuit, earth fault, and phase failure/imbalance protection with manual reset—essentially the brains of the motor starter assembly. Rated for utilisation categories AC-41, AC-43, and AC-44, it covers both resistive and motor switching duty at up to 9 kW on 690 V AC. Plug-in mounting via the front face mates directly with the TeSys Ultra power base. Control circuit voltage spans 110…240 V AC and 110…220 V DC, with sealed consumption of 25–35 mA depending on the LUB control circuit used. Closing inrush peaks at 280 mA. The IP20 front panel and wired terminals hold up in typical panel environments; IP40 over the front face outside the connection zone. Thermal overload Class 10 protection, immunity to microbreaks of 3 ms, and voltage dip ride-through at 70% for 500 ms keep the drive running through line disturbances. Vibration resistance: 2 gn open poles, 4 gn closed, across 5–300 Hz. Shock resistance: 10 gn open, 15 gn closed. Standards compliance includes EN/IEC 60947-6-2 and UL 60947-4-1 (with phase barrier) and CSA C22.2 No 60947-4-1 (with phase barrier). Fire resistance at 960 °C for live-supporting parts per IEC 60695-2-12. Safe separation of circuits at 400 V SELV between control and main circuits.","metaTitle":"Schneider LUCB12FU TeSys Ultra Advanced Control Unit, 5.5 kW","metaDescription":"Schneider Electric LUCB12FU TeSys Ultra advanced control unit. Motor protection, earth fault, phase imbalance. Manual reset. Active production. 110…240 V AC/DC control. EN/IEC/UL c","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Depth":"2.4 in (60 mm)","Range":"TeSys","Reset":"Manual reset","Width":"1.8 in (45 mm)","Height":"2.6 in (66 mm)","Category":"US10I1122397","Load type":"3-phase motor 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 Ultra","Motor power kW":"5.5 kW 400...440 V AC 50/60 Hz 5.5 kW 500 V AC 50/60 Hz 9 kW 690 V AC 50/60 Hz","Operating time":"35 ms opening with LUB12 control circuit 35 ms opening with LUB32 control circuit 35 ms opening with LUB38 control circuit 50 ms closing with LUB12 control circuit 50 ms closing with LUB32 control circuit 50 ms closing with LUB38 control circuit","Fire resistance":"1760 °F (960 °C) parts supporting live components IEC 60695-2-12 1202 °F (650 °C) IEC 60695-2-12","lifecycle_stage":"current","Heat dissipation":"2 W control circuit with LUB12 3 W control circuit with LUB32 3 W control circuit with LUB38","Range of Product":"TeSys Ultra","Shock resistance":"10 gn power poles open IEC 60068-2-27 15 gn power poles closed IEC 60068-2-27","Device short name":"LUCB","Network frequency":"40...60 Hz","Compatibility code":"LUCB","Device Application":"Motor control Motor protection","Operating altitude":"6561.68 ft (2000 m)","Tripping threshold":"14.2 x Ir +/- 20 %","Protective treatment":"TH IEC 60068","Utilisation category":"AC-43 AC-44 AC-41","Vibration resistance":"2 gn 5...300 Hz power poles open IEC 60068-2-6 4 gn 5...300 Hz power poles closed IEC 60068-2-6","Nbr. of units in pkg.":"1","Thermal overload class":"Class 10 40...60 Hz -13...158 °F (-25...70 °C) IEC 60947-6-2 Class 10 40...60 Hz -13...158 °F (-25...70 °C) UL 508","IP degree of protection":"IP20 front panel and wired terminals IEC 60947-1 IP20 other faces IEC 60947-1 IP40 front panel outside connection zone IEC 60947-1","Immunity to microbreaks":"3 ms","Main Function Available":"Earth fault protection Protection against phase failure and phase imbalance Protection against overload and short-circuit Manual reset","Immunity to voltage dips":"70 % / 500 ms IEC 61000-4-11","Phase failure sensitivity":"Yes","Product or Component Type":"Advanced control unit","Non-dissipating shock wave":"1 kV serial mode IEC 60947-6-2 2 kV common mode IEC 60947-6-2","Safe separation of circuit":"400 V SELV between the control and auxiliary circuits IEC 60947-1 400 V SELV between the control or auxiliary circuit and the main circuit IEC 60947-1","Typical current consumption":"280 mA 110...240 V AC I maximum while closing with LUB12 280 mA 110...240 V AC I maximum while closing with LUB32 280 mA 110...240 V AC I maximum while closing with LUB38 280 mA 110...220 V DC I maximum while closing with LUB12 280 mA 110...220 V DC I maximum while closing with LUB32 280 mA 110...220 V DC I maximum while closing with LUB38 35 mA 110...240 V AC I rms sealed with LUB12 25 mA 110...240 V AC I rms sealed with LUB32 25 mA 110...240 V AC I rms sealed with LUB38 35 mA 110...220 V DC I rms sealed with LUB12 25 mA 110...220 V DC I rms sealed with LUB32 25 mA 110...220 V DC I rms sealed with LUB38","Product Specific Application":"Basic protection and advanced functions, communication","[Uc] control circuit voltage":"110...240 V AC 110...220 V DC","Resistance to fast transients":"2 kV 3 serial link IEC 61000-4-4 4 kV 4 all circuits except for serial link IEC 61000-4-4","Resistance to radiated fields":"9.1 V/m (10 V/m) 3 IEC 61000-4-3","[Ui] rated insulation voltage":"690 V IEC 60947-6-2 600 V UL 60947-4-1 600 V CSA C22.2 No 60947-4-1","Control circuit voltage limits":"88...264 V AC 110...240 V in operation 88...242 V DC 110...220 V in operation 55 V AC 110...240 V drop-out 55 V DC 110...220 V drop-out","[Ue] rated operational voltage":"690 V AC","Immunity to radioelectric fields":"10 V IEC 61000-4-6","Ambient Air Temperature for Storage":"-40...185 °F (-40...85 °C)","Rated Motor Current Adjustment Range":"3...12 A","Ambient air temperature for operation":"-13...158 °F (-25...70 °C)","Resistance to electrostatic discharge":"8 kV 3 in open air IEC 61000-4-2 8 kV 4 on contact IEC 61000-4-2","[Uimp] rated impulse withstand voltage":"6 kV IEC 60947-6-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$64.77 – $170.34","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f2b76457058e9c08fb89d56b8bf57a62.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCB12FU/alternatives.json"},"ai":{"faq":[{"question":"What are the key specifications of the LUCB12FU?","answer":"It is a TeSys Ultra advanced control unit for motor protection with manual reset. Control voltage is 110…240 V AC / 110…220 V DC. It provides overload, short-circuit, earth fault, and phase failure/imbalance protection. Motor power ratings range from 5.5 kW at 400 V to 9 kW at 690 V AC."},{"question":"What compliance documentation does the LUCB12FU have?","answer":"The LUCB12FU complies with 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). Fire resistance meets IEC 60695-2-12 at 960 °C for live-supporting parts."},{"question":"What are the mounting dimensions of the LUCB12FU?","answer":"The unit has a width of 45 mm (1.8 in), height of 66 mm (2.6 in), and depth of 60 mm (2.4 in). It mounts plug-in to the TeSys Ultra power base from the front face."},{"question":"What is the range of this product?","answer":"It belongs to the Schneider Electric TeSys Ultra range, specifically the LUCB short-name family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCB12FU","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/LUCB12FU when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}