{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LUCL12B","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LUCL12B","canonicalUrl":"https://aoctrl.com/schneider/LUCL12B","factsUrl":"https://aoctrl.com/api/mcp/products/LUCL12B","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Ultra magnetic control unit, LUCL12B, 5.5 kW at 400...440 V AC, 24 V AC coil, plug-in front face, for motor control and protection.","salesMarkdown":"It is rated for 5.5 kW at 400...440 V AC, 5.5 kW at 500 V AC, and 9 kW at 690 V AC, all at 50/60 Hz, with a 24 V AC control circuit. The utilisation categories AC-44, AC-43, and AC-41 cover the full range of motor switching duties from resistive to severe inching and plugging. The plug-in front-face mounting means this unit snaps onto a TeSys U base without tools, keeping the wiring on the base undisturbed when the control unit is swapped — a time-saver during troubleshooting or motor replacement on a production line. The IP20 front panel and wired terminals (IP40 outside the connection zone) keep live parts protected inside the enclosure while allowing access to the reset button and status indication. The control circuit draws 140 mA peak inrush (220 mA with LUB32/LUB38) and 70 mA sealed (90 mA with LUB32/LUB38) at 24 V AC — a modest load for a 24 V AC control transformer, but worth checking the transformer VA budget if several units share one supply. The AC-44 utilisation category is the most demanding standard motor-starting duty — it covers inching and plugging where the motor sees repeated high-inrush current. The LUCL12B is rated for that, so it is not limited to simple on-off pump or fan duty; it handles reversing and jogging applications without derating. The tripping threshold of 14.2 x Ir +/- 20 % sets the magnetic short-circuit release at roughly 14 times the thermal setting, which is typical for motor-starting inrush and avoids nuisance trips on start-up while still clearing a bolted fault fast. Rated insulation voltage (Ui) is 690 V per IEC 60947-6-2, 600 V per UL 60947-4-1 and CSA C22.2 No 60947-4-1 — the part is suitable for 480 V and 600 V North American systems as well as 400 V and 690 V European networks, with the phase barrier required for the UL/CSA listing. The product-specific application is protection of variable speed drive or soft-start/soft-stop units — not just across-the-line motor starting. This means the LUCL12B is designed to coordinate with the reduced inrush and harmonic content of a VSD output, a detail that matters when selecting the control unit for a drive-fed motor branch.","metaTitle":"Schneider Electric LUCL12B TeSys Ultra Magnetic Control Unit","metaDescription":"Schneider Electric LUCL12B TeSys Ultra magnetic control unit for motor protection, 5.5 kW at 400 V AC, 24 V AC coil, plug-in front face.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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 Ultra","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 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 Ultra","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":"LUCL","Network frequency":"40...60 Hz","Compatibility code":"LUCL","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-44 AC-43 AC-41","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","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":"Short-circuit protection Manual reset","Immunity to voltage dips":"70 % / 500 ms conforming to IEC 61000-4-11","Product or component type":"Magnetic 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":"140 mA at 24 V AC I maximum while closing with LUB12 220 mA at 24 V AC I maximum while closing with LUB32 220 mA at 24 V AC I maximum while closing with LUB38 70 mA at 24 V AC I rms sealed with LUB12 90 mA at 24 V AC I rms sealed with LUB32 90 mA at 24 V AC I rms sealed with LUB38","Product specific application":"Protection of variable speed drive or soft startsoft stop unit","[Uc] control circuit voltage":"24 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":"20...26.5 V for AC circuit 24 V in operation 14.5 V for AC 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":"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/b4e2d21a721e47259573cfa6ceccff90.pdf","sourceUrl":"https://www.se.com/ie/en/product/LUCL12B/standard-control-unit-tesys-ultra-3p-3-to-12a-690vac-magnetic-protection-24vac-coil/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LUCL12B/alternatives.json"},"ai":{"faq":[{"question":"What is the price of LUCL12B?","answer":"Pricing for the LUCL12B is confirmed at quote time against an RFQ through independent distribution channels. Submit an RFQ for current pricing."},{"question":"Where to buy LUCL12B?","answer":"The LUCL12B is sourced and quoted to order against an RFQ through independent industrial automation distributors. Availability is confirmed at quote time."},{"question":"Is LUCL12B available via RFQ confirmation?","answer":"Stock status for the LUCL12B is confirmed at quote time against an RFQ. Submit an RFQ for current availability and lead time."},{"question":"What are the specifications of LUCL12B?","answer":"The LUCL12B is a TeSys Ultra magnetic control unit rated for 5.5 kW at 400...440 V AC, 5.5 kW at 500 V AC, and 9 kW at 690 V AC, with a 24 V AC control circuit. It measures 45 mm wide, 66 mm high, and 60 mm deep, and mounts via plug-in front face onto a TeSys U base."},{"question":"Is LUCL12B compatible with TeSys U?","answer":"Yes, the LUCL12B is a TeSys Ultra magnetic control unit designed to plug into a TeSys U base. It is the control unit component of the TeSys U motor starter system."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LUCL12B","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/LUCL12B 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}}