{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LA9FL4K4G","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LA9FL4K4G","canonicalUrl":"https://aoctrl.com/schneider/LA9FL4K4G","factsUrl":"https://aoctrl.com/api/mcp/products/LA9FL4K4G","rawCanonicalId":null},"summary":{"shortDescription":"Schneider TeSys F series, LA9FL4K4G mechanical interlock, for 3 vertical contactors, interlocks LC1F185–LC1F225, LC1F500, LC1F630/800 and CR1F variants.","salesMarkdown":"The LA9FL4K4G is a mechanical interlock from the TeSys F range, designed to prevent simultaneous closure of two contactors in a reversing or changeover configuration. It mounts in a 3-vertical stack, mechanically coupling the moving contacts so only one device can be in the ON position at any time. This interlock is compatible with bottom-position LC1F185 through LC1F225 3P or 4P contactors and CR1F185 3P or 4P reversing contactors, middle-position LC1F500 2P/3P/4P and CR1F500 3P/4P, and top-position LC1F630 3P/4P, LC1F800 3P, and CR1F630 3P/4P units. It is the mechanical safety backbone for any TeSys F reversing starter or transfer switch assembly. Because it is a mechanical accessory with no electronics, there is no firmware revision or compliance documentation beyond the standard RoHS/REACH declarations that cover the TeSys range. ## Installation note Mounting position is 3 vertical — meaning the three contactors stack vertically on the DIN rail or panel plate. The interlock clips between them; no additional wiring is required. Verify the stack order matches the compatibility table: bottom for the 185–225 frame, middle for the 500 frame, top for the 630/800 frame.","metaTitle":"Schneider TeSys LA9FL4K4G Mechanical Interlock, 3 Vertical C","metaDescription":"Schneider TeSys LA9FL4K4G mechanical interlock for 3 vertical contactors. Active production. Interlocks LC1F185-225, LC1F500, LC1F630/800 & CR1F variants. Source to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"Range":"TeSys","title":"LA9FL4K4G","Category":"18401-WORLD SERVICE PARTS(CTR ACCESS)","description":"TeSys F- mechanical interlock - for 3 vertical contactors","lifecycle_stage":"current","Device short name":"LA9F","Interlocking type":"Mechanical","Mounting position":"3 vertical","Interlocked device":"Bottom LC1F185...LC1F225 3P or 4P Bottom CR1F185 3P or 4P Middle LC1F500 2P or 3P or 4P Middle CR1F500 3P or 4P Top LC1F630 3P or 4P Top LC1F800 3P Top CR1F630 3P or 4P","Nbr. of units in pkg.":"1","Product or Component Type":"Mechanical interlock","Accessory / separate part category":"Interlocking accessory"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cf9a94a898a9ec722a82e20aa60981f5.pdf","sourceUrl":"https://www.se.com/vn/en/product/LA9FL4K4G/tesys-f-mechanical-interlock-for-3-vertical-contactors/"},"ai":{"faq":[{"question":"What contactors does the LA9FL4K4G interlock?","answer":"It interlocks bottom-position LC1F185 through LC1F225 3P/4P and CR1F185 3P/4P, middle-position LC1F500 2P/3P/4P and CR1F500 3P/4P, and top-position LC1F630 3P/4P, LC1F800 3P, and CR1F630 3P/4P contactors."},{"question":"What is the mounting orientation for this interlock?","answer":"The LA9FL4K4G is designed for a 3-vertical mounting position, meaning the three contactors stack vertically with the interlock installed between them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LA9FL4K4G","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/LA9FL4K4G 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}}