{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FF660","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FF660","canonicalUrl":"https://aoctrl.com/schneider/LX1FF660","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FF660","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F LX1FF660 contactor coil, 660...690 V AC 50 Hz, AC 50 Hz coil technology, 10 Mcycles mechanical durability.","salesMarkdown":"The LX1FF660 is a replacement coil for the TeSys F contactor range, wound for 660...690 V AC 50 Hz control circuits. It's the part you pull when the original coil opens or shorts — not a contactor itself, just the electromagnet that pulls the main poles in. Coil technology is AC 50 Hz with no built-in suppressor module, so you'll need to add an RC snubber or varistor across the terminals if the PLC output driving it is solid-state. Closing time runs 23...35 ms, opening 5...15 ms — fast enough for motor starting, not for precision synchronizing. Mechanical durability is rated 10 Mcycles, and the maximum operating rate at 131 °F (55 °C) is 2400 cycles per hour. ## Sourcing reality — obsolete If you're holding a BOM that calls out LX1FF660, verify the control voltage on the existing contactor base and cross to the current TeSys F coil offering at the same 660-690 VAC 50 Hz rating. The 660...690 V AC 50 Hz control voltage is unusual — most industrial control in North America runs 120 V or 240 V, and even 480 V is rare for a coil. This coil is built for 600 V class systems (common in Canadian and some European 690 V distribution) where the control transformer taps off the line side. Drop-out voltage is 0.35...0.55 Uc (about 231...380 V), so it won't drop out on a sag to 50% — that's intentional for ride-through on weak grids. Inrush power is 550 VA at 50 Hz, hold-in drops to 45 VA. Heat dissipation runs 12...16 W at 50 Hz. Coil resistance is 254 Ohm at 68 °F (20 °C), inductance of the closed circuit is 28.9 H. That inductance, combined with the lack of a built-in suppressor, means the flyback voltage on de-energization can hit several kV — plan for external suppression if the driving contact is electronic.","metaTitle":"TeSys LX1FF660 contactor coil, 660-690 VAC 50 Hz, obsolete","metaDescription":"TeSys F LX1FF660 contactor coil, 660-690 VAC 50 Hz, 50 Hz AC coil, 10 Mcycles mechanical durability. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","Category":"22341-CONTACTOR,D,K,&F ACCESS","Operating time":"23...35 ms closing 5...15 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Heat dissipation":"12...16 W 50 Hz","Device short name":"LX1FF","Average resistance":"254 Ohm 68 °F (20 °C)","Inrush power in VA":"550 VA 50 Hz cos phi 0.3 (at 68 °F (20 °C))","Control circuit type":"AC 50 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":"28.9 H","[Uc] control circuit voltage":"660...690 V AC 50 Hz","Control circuit voltage limits":"Drop-out 0.35...0.55 Uc 50/60 Hz 131 °F (55 °C)) Operational 0.85...1.1 Uc 50/60 Hz 131 °F (55 °C))","Hold-in power consumption in VA":"45 VA 50 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ed3e11060131f4210fba314c76fc5e00.pdf","sourceUrl":"https://www.se.com/vn/en/product/LX1FF660/tesys-f-contactor-coil-lx1ff-660-690-v-ac-50-hz/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX1FF660/alternatives.json"},"ai":{"faq":[{"question":"Does this coil include a built-in surge suppressor?","answer":"No. The coil technology is listed as 'without built-in suppressor module'. External RC snubber or varistor is required for solid-state drive circuits."},{"question":"What is the mechanical life rating?","answer":"10 million cycles mechanical, with a maximum operating rate of 2400 cycles per hour at 131 °F (55 °C)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FF660","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/LX1FF660 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}}