{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FK660","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FK660","canonicalUrl":"https://aoctrl.com/schneider/LX1FK660","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FK660","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F contactor coil LX1FK660, 660 V AC 40-400 Hz, 1100 VA inrush / 18 VA holding, 18 W dissipation, without suppressor module.","salesMarkdown":"The LX1FK660 is a replacement coil for TeSys F contactors, rated for 660 V AC control circuits at 40-400 Hz. It's the part you swap when a contactor coil opens or shorts on the line — no need to replace the whole power stack if the main poles are still good. Inrush pulls 1100 VA at cos φ 0.9, then settles to 18 VA holding at cos φ 0.3. That 18 W dissipation figure is what heats the enclosure — if you're packing multiple contactors in a tight panel, derate ambient or add ventilation above 55 °C. Coil resistance drops from 1.9 Ω inrush to 33.5 Ω holding at 20 °C. The opening time runs 100-170 ms, closing 40-75 ms — fast enough for motor starting, but not for high-speed cycling above 2400 cycles/hour at 55 °C. ## Control circuit voltage limits and suppressor note Operational range is 0.85 to 1.1 times Uc (561-726 V AC) at 55 °C; dropout happens between 0.3 and 0.5 Uc (198-330 V AC). That dropout band is wide — if your control transformer sags under load, this coil will hold longer than a tighter-tolerance coil, which matters on weak line feeds. No built-in suppressor module. That means you need an external RC snubber or varistor across the coil if the PLC output or relay driving it can't handle the inductive kickback. Standard practice: fit a Schneider RXM or equivalent RC unit in parallel. ## Mechanical durability and thermal limits Rated for 10 million mechanical cycles — that's the contactor frame's life, not the coil's. The coil itself is a wear item; if you're cycling near the 2400 cycles/hour max, expect to replace coils before the frame wears out.","metaTitle":"Schneider LX1FK660 TeSys contactor coil, 660 V AC 40-400 Hz","metaDescription":"Active-production TeSys F contactor coil, 660 V AC 40-400 Hz control. 1100 VA inrush, 18 VA hold, 18 W dissipation. 10 Mcycles mechanical life. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","title":"LX1FK660","Category":"22341-CONTACTOR,D,K,&F ACCESS","description":"TeSys F - contactor coil - LX1FK - 660 V AC 40...400 Hz","Operating time":"100...170 ms opening 40...75 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Heat dissipation":"18 W 40...400 Hz","Device short name":"LX1FK","Average resistance":"1.9 Ohm inrush 68 °F (20 °C) 33.5 Ohm holding 68 °F (20 °C)","Inrush power in VA":"1100 VA 40...400 Hz cos phi 0.9 (at 68 °F (20 °C))","Control circuit type":"AC 40...400 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","Inductance of closed circuit":"0.19 H","[Uc] control circuit voltage":"660 V AC 40...400 Hz","Control circuit voltage limits":"Operational 0.85...1.1 Uc 40...400 Hz 131 °F (55 °C)) Drop-out 0.3...0.5 Uc 40...400 Hz 131 °F (55 °C))","Hold-in power consumption in VA":"18 VA 40...400 Hz cos phi 0.3 (at 68 °F (20 °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/c710500d8f41499ddf1c202d818d3ff4.pdf","sourceUrl":"https://www.se.com/ie/en/product/LX1FK660/tesys-f-contactor-coil-lx1fk-660-v-ac-40-400-hz/"},"ai":{"faq":[{"question":"What is the closest alternative to LX1FK660 in the TeSys family?","answer":"Within the TeSys F range, the LX1FK coils are voltage-specific. The closest alternative would be a different voltage variant (e.g., LX1FK for 220 V or 380 V coils) — same mechanical footprint, same mounting, but different control voltage. No pin-compatible substitute exists for 660 V AC specifically; you'd need to change the control circuit voltage to use another coil."},{"question":"What is the TeSys range for this coil?","answer":"It belongs to the TeSys F range — Schneider's heavy-duty contactor series for motor loads up to about 800 A. The coil is the LX1FK sub-family within that range."},{"question":"Does this coil come with a built-in suppressor?","answer":"No — it's listed as 'without built-in suppressor module'. You'll need to add an external RC snubber or varistor if driving it with a solid-state output or PLC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FK660","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/LX1FK660 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}}