{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FJ040","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FJ040","canonicalUrl":"https://aoctrl.com/schneider/LX4FJ040","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FJ040","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys LX4FJ, contactor coil, 40 V DC, obsolete.","salesMarkdown":"The LX4FJ040 is a replacement coil for the TeSys FJ series contactors, rated for a 40 V DC control circuit. It's the part that pulls the contactor in and holds it closed — without it, the main power contacts don't move. The coil draws about 1.61 Ω inrush and 435.7 Ω holding at 20 °C, which is typical for a DC low-consumption design. Opening time runs 45 to 60 ms, closing time 50 to 60 ms. Control circuit voltage limits: operational pickup 0.85 to 1.1 Uc, dropout 0.2 to 0.35 Uc at 55 °C. ## What to watch when installing This coil comes without a built-in suppressor module. Add an external flyback diode across the coil terminals for DC solid-state drivers. If your panel sits in a hot machine cabinet or near a furnace, check that the ambient stays under 55 °C or the coil's holding margin starts to shrink.","metaTitle":"TeSys LX4FJ040 Contactor Coil, 40 V DC, Obsolete","metaDescription":"TeSys LX4FJ040 replacement coil for FJ contactors, 40 V DC control circuit, obsolete status. Sourced to order against an RFQ. Operating time 45-60 ms open, 50-60 ms close.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","Category":"18401-WORLD SERVICE PARTS(CTR ACCESS)","Operating time":"45...60 ms opening 50...60 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FJ","Average resistance":"1.61 Ohm inrush 68 °F (20 °C) 435.7 Ohm holding 68 °F (20 °C)","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/96484d3c37a16e7cb50f8685848b1f0c.pdf","sourceUrl":"https://www.se.com/sg/en/product/LX4FJ040/contactor-coil-fj-40-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FJ040/alternatives.json"},"ai":{"faq":[{"question":"Does this coil include a built-in suppressor?","answer":"No, it ships without a suppressor module. You'll need to add an external flyback diode if your driver is a DC solid-state output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FJ040","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/LX4FJ040 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}}