{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FG750","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FG750","canonicalUrl":"https://aoctrl.com/schneider/LX1FG750","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FG750","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F series, LX1FG750, contactor coil, 750 V AC 50 Hz, 20...35 ms closing time.","salesMarkdown":"## What This Coil Is and What Drives the Fit The LX1FG750 is a replacement coil for the TeSys F contactor range, wound for a 750 V AC 50 Hz control circuit. That 750 V figure is the rated control voltage (Uc), not a coil that will pull in on 480 V and hope — the drop-out threshold sits at 0.35...0.55 Uc and the operational pickup requires 0.85...1.1 Uc, so at 750 V nominal the coil drops out somewhere between 262 V and 412 V and needs at least 637 V to pull in reliably. If your control transformer is tapped for 600 V or 480 V, this coil will not pick up. Closing time runs 20...35 ms, opening 7...15 ms. That is a standard TeSys F speed — not a fast-acting DC coil, but fast enough for motor starting and general switching where the contactor is not doing high-speed jogging. The maximum operating rate is 2400 cycles per hour at 131 °F (55 °C), which works out to one operation every 1.5 seconds; sustained faster cycling will overheat the coil. ## Coil Electrical Characteristics — What the Ratings Mean This coil uses AC 50 Hz control with no built-in suppressor module. That means you must add an external RC snubber or varistor across the coil if your PLC output or relay contact drives it — the inductive kick from a 55 VA hold-in load (805 VA inrush at cos φ 0.3) will arc a dry contact in short order. The inrush-to-hold ratio is about 14.6:1, typical for an AC coil; the closed-circuit inductance of 25.92 H confirms it is a high-inductance device, so the current decay on de-energization is slow without suppression. Heat dissipation runs 18...24 W at 50 Hz. In a densely packed panel with multiple TeSys F contactors side by side, that heat adds up — derating the ambient temperature from the rated 131 °F (55 °C) maximum may be necessary if the enclosure is sealed. The coil resistance is 185.5 Ω at 68 °F (20 °C); a cold coil draws higher inrush, so if the control voltage is marginal at the low end of the operational range, the coil may not pull in reliably on a cold start.","metaTitle":"TeSys LX1FG750 Contactor Coil, 750 V AC 50 Hz","metaDescription":"Active-production TeSys F contactor coil for LX1FG. 750 V AC 50 Hz control voltage, 20-35 ms closing. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","title":"LX1FG750","Category":"18401-WORLD SERVICE PARTS(CTR ACCESS)","description":"contactor coil - TeSys F - LX1FG - 750 V AC - 50 Hz","Operating time":"20...35 ms closing 7...15 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Heat dissipation":"18...24 W 50 Hz","Device short name":"LX1FG","Average resistance":"185.5 Ohm 68 °F (20 °C)","Inrush power in VA":"805 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":"25.92 H","[Uc] control circuit voltage":"750 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":"55 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/164f45eea6712228875ed38a86c15081.pdf","sourceUrl":"https://www.se.com/th/en/product/LX1FG750/contactor-coil-tesys-f-lx1fg-750-v-ac-50-hz/"},"ai":{"faq":[{"question":"What is the control voltage for LX1FG750?","answer":"The control circuit voltage is 750 V AC 50 Hz. The coil will pick up reliably between 637 V and 825 V (0.85 to 1.1 Uc) and drops out between 262 V and 412 V (0.35 to 0.55 Uc) at 131 °F (55 °C)."},{"question":"Does the LX1FG750 coil include a built-in suppressor?","answer":"No. The coil technology is listed as 'without built-in suppressor module.' An external RC snubber or varistor must be added across the coil terminals for contact protection."},{"question":"What is the operating time of this contactor coil?","answer":"Closing time is 20 to 35 ms; opening time is 7 to 15 ms. Maximum operating rate is 2400 cycles per hour at 131 °F (55 °C)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FG750","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/LX1FG750 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}}