{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LC1K120045B7","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LC1K120045B7","canonicalUrl":"https://aoctrl.com/schneider/LC1K120045B7","factsUrl":"https://aoctrl.com/api/mcp/products/LC1K120045B7","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys K series, LC1K120045B7, 4-pole contactor, 4 NO, AC-1 20 A at 440 V, 24 V AC 50/60 Hz coil.","salesMarkdown":"## Part Overview and Lifecycle Status The Schneider Electric TeSys K LC1K120045B7 is a 4-pole contactor (4 NO) designed for resistive load switching, rated 20 A in AC-1 utilisation category at 440 V. The coil is 24 V AC 50/60 Hz, drawing 30 VA inrush and 4.5 VA hold-in power at 20 °C. This part is classified as obsolete by the manufacturer. The AC-1 rated operational current of 20 A at 690 V matches this for resistive loads, but the rating derates to 16 A at 70 °C ambient — a critical check for panels with tight thermal spacing. Breaking capacity is specified at 110 A at 440 V, 80 A at 500 V, and 70 A at 660–690 V per IEC 60947. This governs the contactor's ability to interrupt fault currents downstream of a 25 A gG or aM fuse (the associated fuse rating). The making capacity is 144 A AC, ensuring the contacts can close onto a short-circuit without welding. The 4 NO pole configuration (4 poles, all normally open) suits applications where all four poles switch the load simultaneously, such as three-phase resistive heating plus a neutral or a separate control circuit. The 3 mOhm average impedance per pole at 20 A keeps heat dissipation low at 1.3 W total. ## Standards and Deployment Context This contactor carries approvals to EN/IEC 60947-4-1, GB/T 14048.4, UL 60947-4-1, CSA C22.2 No 60947-4-1, and JIS C8201-4-1, making it accepted in panels destined for European, North American, Chinese, and Japanese markets. Flame retardance meets V1 per UL 94 and NF F 16-101/102 requirements for rail and building applications. Mechanical robustness is rated for shocks up to 15 Gn on Y/Z axes (closed) and 10 Gn on X axis (closed) per IEC 60068-2-27, and vibration resistance to 4 Gn at 5–300 Hz (closed). This supports mounting on machinery or in mobile equipment where shock and vibration are present. The operating altitude is 2000 m without derating, covering most industrial sites. The contactor is intended for control applications in panels and enclosures. Its dimensions of 2.2 in (57 mm) depth, 1.8 in (45 mm) width, and 2.3 in (58 mm) height fit standard DIN-rail or panel-mount footprints. The maximum operating rate of 3600 cycles per hour defines the switching duty cycle for resistive loads.","metaTitle":"Schneider TeSys K LC1K120045B7 Contactor, 4P 20A AC-1, 24V A","metaDescription":"Obsolete Schneider TeSys K LC1K120045B7 contactor. 4P (4 NO), 20 A AC-1 at 440 V, 24 V AC coil. Sourced to order against RFQ. Complies with IEC, UL, CSA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"2.2 in (57 mm)","Range":"TeSys","Width":"1.8 in (45 mm)","Height":"2.3 in (58 mm)","Standards":"EN/IEC 60947-4-1 GB/T 14048.4 UL 60947-4-1 CSA C22.2 No 60947-4-1 JIS C8201-4-1","Product name":"TeSys K","Operating time":"10...20 ms coil de-energisation and NO opening 10...20 ms coil energisation and NO closing","lifecycle_stage":"current","Flame retardance":"V1 UL 94 Requirement 2 NF F 16-101 Requirement 2 NF F 16-102","Heat dissipation":"1.3 W","Range of product":"TeSys K","Average impedance":"3 mOhm - Ith 20 A 50 Hz for power circuit","Poles description":"4P","Compatibility code":"LC1K","Device application":"Control","Inrush power in VA":"30 VA (at 68 °F (20 °C))","Operating altitude":"2000 m without derating","Control circuit type":"AC 50/60 Hz","Overvoltage category":"III","Protective treatment":"TC IEC 60068 TC DIN 50016","Utilisation category":"AC-1","Contactor application":"Resistive load","Mechanical robustness":"Shocks contactor closed, on X axis10 Gn for 11 ms IEC 60068-2-27 Shocks contactor closed, on Y axis15 Gn for 11 ms IEC 60068-2-27 Shocks contactor closed, on Z axis15 Gn for 11 ms IEC 60068-2-27 Shocks contactor opened, on X axis6 Gn for 11 ms IEC 60068-2-27 Shocks contactor opened, on Y axis10 Gn for 11 ms IEC 60068-2-27 Shocks contactor opened, on Z axis10 Gn for 11 ms IEC 60068-2-27 Vibrations contactor closed4 Gn, 5...300 Hz IEC 60068-2-6 Vibrations contactor opened2 Gn, 5...300 Hz IEC 60068-2-6","Associated fuse rating":"25 A gG at 25 A aM for power circuit","Maximum operating rate":"3600 cyc/h","Rated breaking capacity":"110 A at 440 V conforming to IEC 60947 80 A at 500 V conforming to IEC 60947 70 A at 660...690 V conforming to IEC 60947","Pole contact composition":"4 NO","Safety reliability level":"B10d = 1369863 cycles contactor with nominal load EN/ISO 13849-1 B10d = 20000000 cycles contactor with mechanical load EN/ISO 13849-1","Product or component type":"Contactor","Irms rated making capacity":"144 A AC for power circuit conforming to NF C 63-110 144 A AC for power circuit conforming to IEC 60947","Signalling circuit frequency":"<= 400 Hz","[Uc] control circuit voltage":"24 V AC 50/60 Hz","Control circuit voltage limits":"Operational: 0.8...1.15 Uc (at Drop-out: 0.2...0.75 Uc (at <122 °F (50 °C))","[Ie] rated operational current":"20 A (at 16 A (at <158 °F (70 °C)) at 690 V AC AC-1 for power circuit","Hold-in power consumption in VA":"4.5 VA (at 68 °F (20 °C))","[Ith] conventional free air thermal current":"20 A (at 122 °F (50 °C)) for power circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f3e4b3afdac015888edfe45f2358ebee.pdf","sourceUrl":"https://www.se.com/in/en/product/LC1K120045B7/tesys-k-contactor-4p-4-no-ac1-440-v-20-a-24-v-ac-coil/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LC1K120045B7/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the LC1K120045B7 in the TeSys family?","answer":"A current-production equivalent from the TeSys range should be evaluated for new designs. The manufacturer does not list a direct successor order code for this specific obsolete part, so a parametric match based on pole count (4 NO), AC-1 current rating (20 A), and coil voltage (24 V AC) is required."},{"question":"What compliance documentation is available for the LC1K120045B7?","answer":"The contactor complies with EN/IEC 60947-4-1, GB/T 14048.4, UL 60947-4-1, CSA C22.2 No 60947-4-1, and JIS C8201-4-1. Flame retardance meets V1 per UL 94. Documentation for these standards is available from the manufacturer."},{"question":"What is the depth of the LC1K120045B7?","answer":"The depth is 2.2 in (57 mm). Overall dimensions are 2.2 in depth, 1.8 in (45 mm) width, and 2.3 in (58 mm) height."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LC1K120045B7","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/LC1K120045B7 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}}