{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LA4DFBQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LA4DFBQ","canonicalUrl":"https://aoctrl.com/schneider/LA4DFBQ","factsUrl":"https://aoctrl.com/api/mcp/products/LA4DFBQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys D, LA4DFBQ, interface amplifier module, relay, 24 V DC / 415 V AC, 3 Mcycles electrical durability.","salesMarkdown":"The LA4DFBQ is a TeSys D interface amplifier module — an electromechanical relay module that bridges a 24 V DC control signal to a 380...415 V AC control circuit. It sits top-mounted on a TeSys D contactor or starter, letting a low-voltage PLC or safety relay drive a higher-voltage load without a separate interposing relay. Rated supply voltage is 24 V DC, with a guaranteed state-1 threshold of 17 V and a state-0 voltage below 2.4 V. Coil current consumption is 25 mA at 20 °C, so the PLC output driving it needs at least that margin. Heat dissipation in the control circuit is 0.6 W — negligible for panel thermal budgeting. The module carries a LED indicator for local signalling of coil state, which speeds troubleshooting on a live panel without needing a meter. Rated operational voltage on the control circuit is 380...415 V AC — that is the load side, not the coil. The module switches AC loads up to that voltage, so it suits motor contactor coils or valve actuators running on a 400 V three-phase panel. The insulation voltage rating is 250 V per IEC 60947-5-1, which governs the clearance and creepage for the control circuit. Electrical durability is 3 Mcycles at 240 V — that is the mechanical switching life under load. For a contactor interface that cycles every few seconds in a conveyor line, this translates to years of service before wear-out. The immunity to microbreaks is 4 ms, meaning the module ignores supply dips shorter than that, which is typical for industrial control. Top-mounts directly onto a TeSys D contactor or reversing starter. Height is 12 mm (0.5 in), so it adds negligible stack height to the contactor assembly. The protective treatment is TH per IEC 60068, so it handles tropical humidity during storage.","metaTitle":"Schneider LA4DFBQ TeSys D Interface Module, 24 V DC / 415 V","metaDescription":"LA4DFBQ TeSys D interface amplifier module. 24 V DC coil, 415 V AC rated operational voltage, 3 Mcycles electrical durability. Active production. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Reversing Contactors"],"specifications":{"Range":"TeSys","title":"LA4DFBQ","Height":"0.5 in (12 mm)","Category":"22341-CONTACTOR,D,K,&F ACCESS","Standards":"IEC 60255-5","description":"TeSys D - interface amplifier module - relay - 24 V DC / 415 V AC","Mounting Mode":"Top mounted","Technology Type":"Electromechanical","lifecycle_stage":"current","Heat dissipation":"0.6 W control circuit","Local signalling":"LED indicator","Device short name":"LA4D","Poles description":"3P 4P","Current consumption":"25 mA 68 °F (20 °C)","Protective treatment":"TH IEC 60068","Electrical durability":"3 Mcycles 240 V","Connections - terminals":"Control circuit connector 1 0.002...0.004 in² (1...2.5 mm²)flexible with cable end Control circuit connector 1 0.002...0.004 in² (1...2.5 mm²)flexible without cable end Control circuit connector 1 0.002...0.004 in² (1...2.5 mm²)solid with cable end Control circuit connector 1 0.002...0.004 in² (1...2.5 mm²)solid without cable end Control circuit connector 2 0.002...0.004 in² (1...2.5 mm²)flexible with cable end Control circuit connector 2 0.002...0.004 in² (1...2.5 mm²)flexible without cable end Control circuit connector 2 0.002...0.004 in² (1...2.5 mm²)solid with cable end Control circuit connector 2 0.002...0.004 in² (1...2.5 mm²)solid without cable end","IP degree of protection":"IP2X conforming to VDE 0106","Immunity to microbreaks":"4 ms","Product or Component Type":"Interface module","[Us] rated supply voltage":"24 V DC","Current state 0 guaranteed":"<= 2 mA","Voltage state 0 guaranteed":"< 2.4 V","Voltage state 1 guaranteed":"17 V","[Ui] rated insulation voltage":"250 V - control circuit IEC 60947-5-1","[Ue] rated operational voltage":"Control circuit 380...415 V AC","Ambient Air Temperature for Storage":"-40...176 °F (-40...80 °C)","Ambient Air Temperature for Operation":"-13...131 °F (-25...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5020c3c6f93d7c51d8817a6c119a526a.pdf","sourceUrl":"https://www.se.com/sg/en/product/LA4DFBQ/tesys-d-interface-amplifier-module-relay-24-v-dc-415-v-ac/"},"ai":{"faq":[{"question":"What voltage does the LA4DFBQ coil need?","answer":"The rated supply voltage is 24 V DC. The module guarantees state 1 at 17 V and state 0 below 2.4 V, with a coil draw of 25 mA at 20 °C."},{"question":"What load voltage can the LA4DFBQ switch?","answer":"The rated operational voltage on the control circuit is 380...415 V AC. The insulation voltage rating is 250 V per IEC 60947-5-1."},{"question":"What standards does the LA4DFBQ comply with?","answer":"It complies with IEC 60255-5 for relays, IEC 60947-5-1 for control circuit insulation, and IEC 60068 for protective treatment (TH). IP2X finger protection per VDE 0106."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LA4DFBQ","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/LA4DFBQ 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}}