{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LA9FL4K4H","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LA9FL4K4H","canonicalUrl":"https://aoctrl.com/schneider/LA9FL4K4H","factsUrl":"https://aoctrl.com/api/mcp/products/LA9FL4K4H","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F, LA9FL4K4H, mechanical interlock for 3 vertical contactors, LC1F265–LC1F800 range.","salesMarkdown":"The LA9FL4K4H is a mechanical interlock from the TeSys F range, designed to physically prevent two or three contactors from closing simultaneously. It's the accessory that keeps your motor-reversing or star-delta circuit from shorting phase-to-phase when a contactor welds or a coil hangs up. This particular variant is built for a stack of three vertical contactors — a bottom LC1F265 through LC1F330 (3P or 4P) or CR1F265 (3P or 4P), a middle LC1F500 (2P, 3P, or 4P) or CR1F500 (3P or 4P), and a top LC1F630 (3P or 4P) or LC1F800 (3P) or CR1F630 (3P or 4P). That's a lot of model numbers, but the point is: this interlock handles the full F-frame contactor family from 265 A up to 800 A. Mounting position is three vertical — meaning the three contactors sit stacked one above the other on the DIN rail or panel. The interlock clips between them, tying their armatures together mechanically so only one can pull in at a time. If you're laying out a motor control center bucket or a standalone panel, this vertical stack saves width but costs height. Make sure your enclosure has the vertical clearance for three F-frame contactors plus the interlock hardware between them.","metaTitle":"TeSys LA9FL4K4H Mechanical Interlock, 3 Vertical Contactors","metaDescription":"Active TeSys F mechanical interlock LA9FL4K4H for 3 vertical contactors LC1F265-LC1F800. Mechanical interlock type. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"Range":"TeSys","title":"LA9FL4K4H","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 LC1F265...LC1F330 3P or 4P Bottom CR1F265 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/b6697001835d2f3be181f085682ca9bb.pdf","sourceUrl":"https://www.se.com/sg/en/product/LA9FL4K4H/tesys-f-mechanical-interlock-for-3-vertical-contactors/"},"ai":{"faq":[{"question":"What contactors does this interlock work with?","answer":"It mechanically interlocks three vertical contactors: bottom position accepts LC1F265–LC1F330 or CR1F265 (3P or 4P); middle accepts LC1F500 or CR1F500 (2P–4P); top accepts LC1F630–LC1F800 or CR1F630 (3P or 4P)."},{"question":"What is the mounting position for the LA9FL4K4H?","answer":"Three vertical — the contactors stack one above the other with the interlock between them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LA9FL4K4H","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/LA9FL4K4H 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}}