{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCB18FU","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCB18FU","canonicalUrl":"https://aoctrl.com/schneider/LUCB18FU","factsUrl":"https://aoctrl.com/api/mcp/products/LUCB18FU","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Ultra LUCB18FU advanced control unit, 110...240 V AC / 110...220 V DC control, manual reset, plug-in mounting, thermal overload Class 10, utilisation categories AC-43/AC-44/AC-41.","salesMarkdown":"TeSys Ultra advanced control unit LUCB18FU has manual reset and plug-in front-face mounting. Tripping threshold is 14.2 x Ir ±20% with thermal overload Class 10. The utilisation categories AC-43 and AC-44 (alongside AC-41) confirm this unit is rated for starting and switching of high-inrush motor loads—slip-ring motors, high-inertia drives, or frequent starts—not just resistive or lightly inductive circuits. The manual reset function means the operator must physically reset after a fault clears, a safety requirement for applications like conveyors, pumps, and compressors where automatic restart could be hazardous. The unit measures 2.4 x 1.8 x 2.6 in (60 x 45 x 66 mm) and mounts by plugging onto the front face of the matching TeSys contactor base. This plug-in scheme reduces wiring time and makes replacement straightforward during a line-down event—no screw terminals to undo on the power side. The control circuit accepts 110...240 V AC or 110...220 V DC, with a sealed current draw of 25 mA rms, so transformer sizing for multi-unit panels is predictable. Compliance is documented against IEC 60947-6-2, UL 60947-4-1, and CSA C22.2 No 60947-4-1 (all with phase barrier), meaning it meets the three dominant standards for motor starter components in North America and Europe. IP20 on the front panel and wired terminals covers the typical enclosure requirement; IP40 on the front panel outside the connection zone adds a margin for dusty environments.","metaTitle":"LUCB18FU TeSys Ultra Motor Control Unit, AC-43/44, Class 10","metaDescription":"LUCB18FU active production, manual reset, tripping threshold 14.2 x Ir, IP20 front panel. Source via RFQ.","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":"7.5 kW 400...440 V AC 50/60 Hz 9 kW 500 V AC 50/60 Hz 15 kW 690 V AC 50/60 Hz","Operating time":"35 ms opening with LUB32 control circuit 35 ms opening with LUB38 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":"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":"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 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 LUB32 280 mA 110...240 V AC I maximum while closing with LUB38 280 mA 110...220 V DC I maximum while closing with LUB32 280 mA 110...220 V DC I maximum while closing with LUB38 25 mA 110...240 V AC I rms sealed with LUB32 25 mA 110...240 V AC I rms sealed with LUB38 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":"4.5...18 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":"$68.58 – $172.95","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1d4ef74c867751168c181d4b3c39e5b3.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCB18FU/alternatives.json"},"ai":{"faq":[{"question":"What are the key protection ratings for LUCB18FU?","answer":"The tripping threshold is 14.2 times the Ir setting ±20%. The thermal overload class is Class 10 per IEC and UL standards. Utilisation categories are AC-43, AC-44, and AC-41."},{"question":"What standards does LUCB18FU comply with?","answer":"It complies with IEC 60947-6-2, UL 60947-4-1, and CSA C22.2 No 60947-4-1, each with a phase barrier requirement. These cover motor starter performance and safety."},{"question":"How is LUCB18FU mounted?","answer":"It is a plug-in device that mounts onto the front face of the TeSys contactor base. No additional DIN-rail or screw-mount hardware is needed for the control unit itself."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCB18FU","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/LUCB18FU 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}}