{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FL040","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FL040","canonicalUrl":"https://aoctrl.com/schneider/LX4FL040","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FL040","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys FK contactor coil, LX4FL040, 40 V DC control voltage, DC low consumption, without built-in suppressor module.","salesMarkdown":"It uses DC low-consumption coil technology and carries no built-in suppressor module, so you'll need to add a flyback diode or RC snubber externally if the circuit demands one. This coil mounts onto the FK-series contactor frame — the same mechanical footprint as other TeSys FK coils. The control circuit voltage limits are tight: dropout at 0.2 to 0.35 Uc at 131 °F (55 °C), operational range 0.85 to 1.1 Uc at the same temperature. Ambient operating temperature spans -5 to 55 °C (23 to 131 °F). If your panel runs hotter than that, the coil may not hold in reliably.","metaTitle":"Schneider LX4FL040 TeSys contactor coil, 40 V DC, obsolete","metaDescription":"Schneider Electric LX4FL040 TeSys FK contactor coil, 40 V DC control voltage, DC low consumption. Obsolete — sourced to order against RFQ. Operating time 40-50 ms open, 60-70 ms cl","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","Category":"18401-WORLD SERVICE PARTS(CTR ACCESS)","Operating time":"40...50 ms opening 60...70 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FL","Control circuit type":"DC low consumption","Nbr. of units in pkg.":"1","Product or Component Type":"Contactor coil","[Uc] control circuit voltage":"40 V DC","Control circuit voltage limits":"Drop-out 0.2...0.35 Uc 131 °F (55 °C)) Operational 0.85...1.1 Uc 131 °F (55 °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/646167a14ee90850b709621777aa2653.pdf","sourceUrl":"https://www.se.com/us/en/product/LX4FL040/contactor-coil-fk-40-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FL040/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the LX4FL040 in the TeSys family?","answer":"There is no pin-compatible or direct drop-in replacement from Schneider's current TeSys catalog. The LX4FL040 is a 40 V DC coil for the FK contactor frame; any substitute would require changing the coil voltage or the contactor frame itself. Sourcing the original obsolete part through surplus channels is the only way to keep the existing contactor block in service."},{"question":"What TeSys range does the LX4FL040 belong to?","answer":"It is part of the TeSys range, specifically the TeSys FK series of contactor coils."},{"question":"What is the category code for this part?","answer":"The category is 18401 — WORLD SERVICE PARTS (CTR ACCESS). This is a service-parts classification, not a standard catalog item."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FL040","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/LX4FL040 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}}