{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FK042","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FK042","canonicalUrl":"https://aoctrl.com/schneider/LX1FK042","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FK042","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys LX1F series contactor coil, LX1FK042, 42 V AC 50/60 Hz, without built-in suppressor module.","salesMarkdown":"The LX1FK042: The coil draws a measured inrush resistance of 1.21 Ω at 20 °C and a holding resistance of 21.01 Ω at 20 °C, which determines the inrush current and sealed VA draw your control transformer must support. Operating time is 100 to 170 ms for opening and 40 to 75 ms for closing — fast enough for standard motor starting and isolation, but not intended for high-speed cycling applications where contactor overlap timing is critical. ## Control circuit and voltage limits Rated control circuit voltage is 42 V AC 50/60 Hz. The coil picks up reliably between 0.85 and 1.1 Uc (35.7 to 46.2 V AC) at 55 °C, and drops out between 0.3 and 0.5 Uc (12.6 to 21 V AC) at 55 °C. This drop-out margin means the contactor will release cleanly on a sagging control supply, avoiding partial engagement. The coil ships without a built-in suppressor module. For inductive-load switching on the control transformer secondary, add an external RC snubber or varistor across the coil terminals to limit voltage spikes and protect PLC outputs. ## Durability and operating conditions Ambient temperature range for operation is -5 to 55 °C.","metaTitle":"Schneider Electric LX1FK042 TeSys contactor coil, 42 V AC 50","metaDescription":"LX1FK042 is an active TeSys contactor coil for 42 V AC 50/60 Hz control circuits. Opening 100-170 ms, closing 40-75 ms. 10 Mcycles mechanical durability. Sourced to order against R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","title":"LX1FK042","Category":"22341-CONTACTOR,D,K,&F ACCESS","description":"contactor coil - LX1F - 42 V AC - 50/60 Hz","Operating time":"100...170 ms opening 40...75 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX1FK","Average resistance":"1.21 Ohm inrush 68 °F (20 °C) 21.01 Ohm holding 68 °F (20 °C)","Control circuit type":"AC 50/60 Hz","Mechanical durability":"10 Mcycles","Nbr. of units in pkg.":"1","Maximum operating rate":"2400 cyc/h 131 °F (55 °C)","Product or Component Type":"Contactor coil","[Uc] control circuit voltage":"42 V AC 50/60 Hz","Control circuit voltage limits":"Operational 0.85...1.1 Uc 50/60 Hz 131 °F (55 °C)) Drop-out 0.3...0.5 Uc 50/60 Hz 131 °F (55 °C))","Ambient Air Temperature for Operation":"23...131 °F (-5...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/712da3fb49a6ba0367d6cb68d48a2dc3.pdf","sourceUrl":"https://www.se.com/th/en/product/LX1FK042/contactor-coil-lx1f-42-v-ac-50-60-hz/"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LX1FK042?","answer":"Within the TeSys LX1F coil family, the closest alternative would be a coil with the same mechanical footprint but a different control voltage. For a 42 V AC replacement, the LX1FK042 is the only variant at that voltage. For a different control voltage, the LX1F series offers coils at 24 V AC, 48 V AC, 110 V AC, 230 V AC, and others — all share the same mounting and terminal layout."},{"question":"What is LX1FK042's listed range and category?","answer":"The LX1FK042 belongs to the Schneider Electric TeSys range, category 22341 (Contactor, D, K, & F Access). It is a contactor coil component."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FK042","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/LX1FK042 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}