{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LC8K120045P7","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LC8K120045P7","canonicalUrl":"https://aoctrl.com/schneider/LC8K120045P7","factsUrl":"https://aoctrl.com/api/mcp/products/LC8K120045P7","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys K, LC8K120045P7, changeover contactor, 4P, 230 V AC 50/60 Hz, AC-1 resistive load, preassembled with reversing power busbar.","salesMarkdown":"It's a 4-pole, 4 NO contact arrangement, controlled by a 230 V AC 50/60 Hz coil that draws 3 VA inrush at 20 °C. The contactor is rated for AC-1 utilisation category, meaning it's specified for resistive loads, not motor starting (that would be AC-3). Heat dissipation is 3 W, which is modest enough for a crowded enclosure, but the solder-pin terminals (busbar cross-section 1.5 x 0.9 mm) mean you're wiring to a PCB or busbar, not to screw-clamp terminals — plan your termination accordingly. ## Ratings That Drive the Decision The headline rating is the AC-1 utilisation category at 20 A — that 20 A is the conventional free-air thermal current (Ith) for the power circuit, with an average impedance of 3 mOhm per pole at 50 Hz. This tells you the contactor is sized for continuous resistive loads up to 20 A, not for inrush-heavy motor loads. The rated breaking capacity is 110 A at 440 V (per IEC 60947), which is the fault-clearing capability, not the continuous rating. The rated insulation voltage is 600 V per UL 508 and 690 V per IEC 60947-4-1, so it's fine for 480 V systems with margin. Mechanical durability is 5 million cycles, but electrical durability is 0.3 million cycles at 20 A AC-1 — the contacts wear faster under load, so factor that into maintenance intervals if it's cycling frequently. Mounts on plate or DIN rail (35 mm). The dimensions are 90 mm wide, 58 mm high, 57 mm deep — it takes up about 5.1 modules of DIN rail width, so check your rail budget. IP20 protection per VDE 0106 means it's for inside a panel only; no washdown rating. The mechanical interlock is built in, so you don't need an external interlock module for the reversing pair. Operating time is 30 to 40 ms for coil energisation and NO closing, and 30 ms for de-energisation and NO opening — fast enough for most reversing or transfer applications. The associated fuse rating is 25 A gG or 25 A aM for the power circuit, so fuse it at 25 A for branch-circuit protection.","metaTitle":"Schneider Electric LC8K120045P7 TeSys K Changeover Contactor","metaDescription":"Schneider LC8K120045P7 TeSys K changeover contactor, 4 NO poles, 230 VAC 50/60 Hz coil. Rated AC-1 for resistive loads. Preassembled with reversing busbar. In current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"57 mm","Range":"TeSys","Width":"90 mm","title":"LC8K120045P7","Height":"58 mm","Standards":"VDE 0660 IEC 60947 BS 5424 NF C 63-110","description":"TeSys K changeover contactor, 4P, AC,1 <= 440 V 20 A, 230 V AC coil","Product name":"TeSys K","Safety Cover":"Without","Operating time":"30...40 ms coil energisation and NO closing 30 ms coil de-energisation and NO opening","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":"3 W","Mounting support":"Plate Rail","Average impedance":"3 mOhm - Ith 20 A 50 Hz for power circuit","Device short name":"LC8K","Interlocking type":"Mechanical","Poles description":"4P","Device application":"Control","Inrush power in VA":"3 VA (at 20 °C)","Operating altitude":"2000 m without derating","Device presentation":"Preassembled with reversing power busbar","Control circuit type":"AC at 50/60 Hz silent","Overvoltage category":"III","Protective treatment":"TC conforming to IEC 60068 TC conforming to DIN 50016","Utilisation category":"AC-1","Contactor application":"Resistive load","Electrical durability":"0.3 Mcycles 20 A AC-1 at Ue <= 440 V","Mechanical durability":"5 Mcycles","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","Connections - terminals":"Solder pins - busbar cross section: 1.5 x 0.9 mm","IP degree of protection":"IP20 conforming to VDE 0106","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","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":"Changeover contactor","Irms rated making capacity":"144 A at 690 V AC for power circuit conforming to NF C 63-110 144 A at 690 V AC for power circuit conforming to IEC 60947","[Uc] control circuit voltage":"230 V AC 50/60 Hz","[Ui] rated insulation voltage":"Power circuit: 600 V conforming to UL 508 Power circuit: 690 V conforming to IEC 60947-4-1 Power circuit: 600 V conforming to CSA C22.2 No 14","Control circuit voltage limits":"Operational: 0.85...1.1 Uc (at Drop-out: 0.1...0.75 Uc (at <50 °C)","Power Pole Contact Composition":"4 NO","[Ie] rated operational current":"20 A (at 16 A (at <70 °C) at 690 V AC AC-1 for power circuit","[Ue] rated operational voltage":"Power circuit: 690 V AC 50/60 Hz","Hold-in power consumption in VA":"3 VA (at 20 °C)","Ambient air temperature for storage":"-50...80 °C","Ambient air temperature for operation":"-25...50 °C","[Uimp] rated impulse withstand voltage":"8 kV","[Icw] rated short-time withstand current":"115 A 50 °C - 1 s for power circuit 105 A 50 °C - 5 s for power circuit 100 A 50 °C - 10 s for power circuit 75 A 50 °C - 30 s for power circuit 55 A 50 °C - 1 min for power circuit 50 A 50 °C - 3 min for power circuit 25 A 50 °C - >= 15 min for power circuit","[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/b8e600f46a2bb1c87d3bc2045c93d78b.pdf","sourceUrl":"https://www.se.com/ie/en/product/LC8K120045P7/tesys-k-changeover-contactor-4p-ac1-440-v-20-a-230-v-ac-coil/"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"AC-1 utilisation category at 20 A, 4 NO poles, 230 V AC 50/60 Hz coil, rated breaking capacity of 110 A at 440 V per IEC 60947, and a rated insulation voltage of 600 V per UL 508."},{"question":"What compliance standards does the LC8K120045P7 meet?","answer":"It complies with VDE 0660, IEC 60947, BS 5424, and NF C 63-110, with UL 508 and CSA C22.2 No 14 for insulation voltage ratings."},{"question":"What is the mounting and wiring configuration?","answer":"Mounts on DIN rail or plate, dimensions are 90 x 58 x 57 mm. Terminals are solder pins for a busbar cross-section of 1.5 x 0.9 mm, so plan for PCB or busbar connection, not screw terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LC8K120045P7","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/LC8K120045P7 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}}