{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LC1K120045E72","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LC1K120045E72","canonicalUrl":"https://aoctrl.com/schneider/LC1K120045E72","factsUrl":"https://aoctrl.com/api/mcp/products/LC1K120045E72","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys K contactor, 4P (4 NO), AC-1 ≤ 440 V 20 A, 48 V AC coil, 57 mm depth.","salesMarkdown":"The Schneider Electric LC1K120045E72 is a TeSys K contactor with 4 normally-open poles, rated 20 A in AC-1 utilisation category at 440 V — that's the resistive-load rating, so it handles heaters, lighting banks, or transformer primaries up to that current without derating. The coil pulls 48 V AC at 50/60 Hz, with an inrush of 30 VA and a hold-in draw of 4.5 VA at 20 °C, so the control transformer sizing is straightforward: the inrush spike is brief, and the sealed power is low enough that a standard 50 VA control transformer can run several of these. The 4-pole configuration (all NO) means this contactor switches four independent circuits simultaneously — useful for three-phase loads plus a neutral or a separate control signal. The built-in bidirectional peak-limiting diode suppressor handles coil de-energisation transients, so you don't need an external flyback diode on the 48 V AC control circuit. ## Performance and durability Rated breaking capacity at 440 V is 110 A — five times the rated operational current, which gives solid fault-clearing headroom for resistive loads. The mechanical shock and vibration ratings are specified per IEC 60068-2-27 and -6: the contactor holds closed through 10 Gn on X and 15 Gn on Y/Z axes (11 ms half-sine), and survives 4 Gn vibration closed across 5–300 Hz. That's enough for most industrial machinery, including conveyors and compressors mounted near the source. Safety reliability is documented with B10d values: 1,369,863 cycles at nominal load and 20,000,000 cycles for mechanical-only load per EN/ISO 13849-1. The maximum operating rate is 3,600 cycles per hour — one per second — so it's fine for rapid cycling in packaging or sorting lines.","metaTitle":"Schneider Electric LC1K120045E72 TeSys K Contactor, 4P 20 A","metaDescription":"Active-production TeSys K contactor, 4 NO poles, 20 A AC-1 at 440 V, 48 V AC 50/60 Hz coil. UL/CSA/IEC listed. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"57 mm","Range":"TeSys","Width":"45 mm","title":"LC1K120045E72","Height":"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","description":"TeSys K contactor, 4P (4 NO), AC,1 <= 440 V 20 A, 48 V AC coil","Product name":"TeSys K","Operating time":"10...20 ms coil de-energisation and NO opening 10...20 ms coil energisation and NO closing","Coil technology":"Built-in bidirectional peak limiting diode suppressor","lifecycle_stage":"current","Flame retardance":"V1 conforming to UL 94 Requirement 2 conforming to NF F 16-101 Requirement 2 conforming to 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 20 °C)","Operating altitude":"2000 m without derating","Control circuit type":"AC at 50/60 Hz","Overvoltage category":"III","Protective treatment":"TC conforming to IEC 60068 TC conforming to DIN 50016","Utilisation category":"AC-1","Contactor application":"Resistive load","Mechanical robustness":"Shocks contactor closed, on X axis: 10 Gn for 11 ms conforming to IEC 60068-2-27 Shocks contactor closed, on Y axis: 15 Gn for 11 ms conforming to IEC 60068-2-27 Shocks contactor closed, on Z axis: 15 Gn for 11 ms conforming to IEC 60068-2-27 Shocks contactor opened, on X axis: 6 Gn for 11 ms conforming to IEC 60068-2-27 Shocks contactor opened, on Y axis: 10 Gn for 11 ms conforming to IEC 60068-2-27 Shocks contactor opened, on Z axis: 10 Gn for 11 ms conforming to IEC 60068-2-27 Vibrations contactor closed: 4 Gn, 5...300 Hz conforming to IEC 60068-2-6 Vibrations contactor opened: 2 Gn, 5...300 Hz conforming to 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 conforming to EN/ISO 13849-1 B10d = 20000000 cycles contactor with mechanical load conforming to 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":"48 V AC 50/60 Hz","Control circuit voltage limits":"Operational: 0.8...1.15 Uc (at Drop-out: 0.2...0.75 Uc (at <50 °C)","[Ie] rated operational current":"20 A (at 16 A (at <70 °C) at 690 V AC AC-1 for power circuit","Hold-in power consumption in VA":"4.5 VA (at 20 °C)","[Ith] conventional free air thermal current":"20 A (at 50 °C) for power circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b60cd60f29565b91b213f17d8b85bb01.pdf","sourceUrl":"https://www.se.com/in/en/product/LC1K120045E72/tesys-k-contactor-4p-4-no-ac1-440-v-20-a-48-v-ac-coil/"},"ai":{"faq":[{"question":"What compliance documentation does Schneider provide for this contactor?","answer":"The contactor is listed to UL 60947-4-1, CSA C22.2 No 60947-4-1, EN/IEC 60947-4-1, and JIS C8201-4-1. It also meets NF F 16-101/102 for rail fire safety and carries a V1 flame-retardance rating per UL 94. RoHS and REACH declarations are typically available from the manufacturer's documentation portal."},{"question":"What are the key ratings for this contactor?","answer":"4 NO poles, 20 A AC-1 at 440 V (resistive load), 48 V AC 50/60 Hz coil, 30 VA inrush / 4.5 VA hold-in, 57 mm depth, 45 mm width, 58 mm height. Breaking capacity is 110 A at 440 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LC1K120045E72","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/LC1K120045E72 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}