{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LA9FG4G4F","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LA9FG4G4F","canonicalUrl":"https://aoctrl.com/schneider/LA9FG4G4F","factsUrl":"https://aoctrl.com/api/mcp/products/LA9FG4G4F","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F, LA9FG4G4F, mechanical interlock for three vertical contactors, LC1F115...LC1F225 and CR1F150/CR1F185.","salesMarkdown":"The LA9FG4G4F is a mechanical interlock from the TeSys F range, designed to prevent simultaneous closure of three vertically mounted contactors or reversing contactors. It physically blocks the armature of one device from engaging while another is closed, which is critical for motor reversing circuits or any application where two contactors must never be energized at the same time. It interlocks bottom-position LC1F115 through LC1F150 3P or 4P contactors (and CR1F150 equivalents) with top-position LC1F185 through LC1F225 3P or 4P units (and CR1F185 equivalents), plus a middle position for the larger frame. Mounting is specified as three vertical, which is the standard orientation for a three-contactor reversing or star-delta group in a control panel. The mechanical linkage is a passive device — no wiring, no coil, just a bracket and rod assembly that transfers the blocking force between the contactor yokes. It is classified under the 18402-WORLD SERVICE PARTS (CONTROL ACCESS) category, which typically means it is stocked as a serviceable accessory for installed TeSys F installations. ## Integration Notes The interlock mounts between the contactors on a DIN rail or backplate. The three vertical positions are fixed: the bottom position takes the smaller frame (115–150 A), the top and middle positions take the larger frame (185–225 A). Verify the frame size of each contactor before assembling — swapping positions will not align the mechanical linkage. No electrical connections are needed; the interlock is purely mechanical. It adds no power draw or heat to the panel. The assembly adds roughly the width of one additional contactor to the group, so account for that in the panel layout.","metaTitle":"LA9FG4G4F TeSys F Mechanical Interlock for 3 Vertical Contac","metaDescription":"TeSys F LA9FG4G4F mechanical interlock for three vertical contactors. Active production. For LC1F115...LC1F225 and CR1F150/CR1F185. Source to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"Range":"TeSys","title":"LA9FG4G4F","Category":"18402-WORLD SERVICE PARTS(CONTROL 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 LC1F115...LC1F150 3P or 4P Bottom CR1F150 3P or 4P Top LC1F185...LC1F225 3P or 4P Top CR1F185 3P or 4P Middle LC1F185...LC1F225 3P or 4P Middle CR1F185 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/7895c1bffe1ddabd6b98b97dee54b215.pdf","sourceUrl":"https://www.se.com/vn/en/product/LA9FG4G4F/tesys-f-mechanical-interlock-for-3-vertical-contactors/"},"ai":{"faq":[{"question":"What contactors does LA9FG4G4F work with?","answer":"It interlocks bottom-position LC1F115 through LC1F150 (3P or 4P) and CR1F150 equivalents with top-position LC1F185 through LC1F225 (3P or 4P) and CR1F185 equivalents, plus a middle position for the larger frame."},{"question":"What is the mounting orientation for LA9FG4G4F?","answer":"Three vertical positions — bottom for smaller frame contactors (115–150 A), top and middle for larger frame (185–225 A)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LA9FG4G4F","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/LA9FG4G4F when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}