{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FF450","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FF450","canonicalUrl":"https://aoctrl.com/schneider/LX1FF450","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FF450","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F series, LX1FF450 contactor coil, 450-550 V AC 50/60 Hz, 23-35 ms closing, 5-15 ms opening.","salesMarkdown":"The LX1FF450 is a replacement coil for Schneider Electric TeSys F contactors, wound for 450 V AC at 50 Hz and 550 V AC at 60 Hz. It's the part that pulls the contactor in and holds it closed — no built-in suppressor module, so you add your own RC snubber or varistor across the coil terminals if the control circuit needs one. Closing time runs 23 to 35 ms; opening is faster at 5 to 15 ms. That's typical for a frame this size — the drop-out speed matters for arc extinction on inductive loads, so the 5 ms floor is what you design around for contact separation timing. Coil voltage limits: it drops out between 0.35 and 0.55 Uc (about 158 to 248 V at 450 V nominal), and picks up reliably between 0.85 and 1.1 Uc (383 to 495 V). That 0.35 floor is the key number — if your control supply sags below that during a motor start, the contactor drops out. The 0.85 pickup means it won't close on a weak circuit; you need nearly full voltage to pull it in. Inrush power is 550 VA at 50 Hz (650 VA at 60 Hz), dropping to 45 VA hold-in at 50 Hz (55 VA at 60 Hz). That inrush spike is what the control transformer and fuse see — size the supply for the inrush, not the hold-in. Heat dissipation runs 12 to 16 W at 50 Hz, which matters if the coil is enclosed in a small panel with other heat sources. Rated for 10 million mechanical cycles and a maximum operating rate of 2400 cycles per hour at 55 °C. That's about 40 operations per minute — fast enough for most cycling applications but not for high-speed pick-and-place.","metaTitle":"Schneider LX1FF450 TeSys F Contactor Coil, 450-550 V AC","metaDescription":"TeSys F contactor coil LX1FF450, 450-550 V AC 50/60 Hz. Active production. 23-35 ms close, 5-15 ms open. No built-in suppressor. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","title":"LX1FF450","Category":"22341-CONTACTOR,D,K,&F ACCESS","description":"contactor coil - TeSys F - LX1FF - 450..550 V AC - 50/60 Hz","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":"114.13 Ohm 68 °F (20 °C)","Inrush power in VA":"550 VA 50 Hz cos phi 0.3 (at 68 °F (20 °C)) 650 VA 60 Hz cos phi 0.3 (at 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","Inductance of closed circuit":"14.27 H","[Uc] control circuit voltage":"450 V AC 50 Hz 550 V AC 60 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)) 55 VA 60 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/d7abcab0c7f584ab38101a7eb179fd48.pdf","sourceUrl":"https://www.se.com/th/en/product/LX1FF450/contactor-coil-tesys-f-lx1ff-450-550-v-ac-50-60-hz/"},"ai":{"faq":[{"question":"What TeSys range does this coil belong to?","answer":"It's part of the TeSys F contactor range, which covers the larger frame sizes in the TeSys family."},{"question":"Does this coil include a built-in surge suppressor?","answer":"No — it's specified as 'without built-in suppressor module'. You'll need to add an external RC snubber or varistor if the control circuit requires suppression."},{"question":"What are the critical voltage limits for this coil?","answer":"Drop-out occurs at 0.35 to 0.55 Uc (roughly 158-248 V for a 450 V nominal). Pick-up requires 0.85 to 1.1 Uc (383-495 V). The drop-out threshold is the one that governs ride-through during voltage sags."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FF450","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/LX1FF450 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}}