{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FX400","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FX400","canonicalUrl":"https://aoctrl.com/schneider/LX4FX400","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FX400","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys FX series replacement contactor coil, LX4FX400, 400 V DC control circuit, 100...130 ms opening / 70...80 ms closing.","salesMarkdown":"The Schneider Electric TeSys LX4FX400 is a replacement contactor coil for the FX series of contactors, part of the broader TeSys range. It is a DC low-consumption control circuit coil rated for 400 V DC control voltage, with an operating range of 0.85...1.1 Uc at 131 °F (55 °C) and a drop-out range of 0.2...0.4 Uc at the same temperature. The 400 V DC control voltage is the headline spec — this coil is designed for DC control circuits, not standard 24 V or 120 V AC panels. The opening time of 100...130 ms and closing time of 70...80 ms define the mechanical response of the contactor; for applications requiring fast arc extinction or precise timing, these numbers confirm the coil's switching speed is within the expected range for a power contactor of this class. The coil is supplied without a built-in suppressor module, which means the installer must add external flyback diode or RC snubber protection across the coil terminals to prevent voltage spikes from damaging the control circuit. This is standard practice for DC coils but worth flagging if the existing installation expects a suppressed coil. This coil mounts directly onto the FX series contactor frame. It is a service part (category 18401-WORLD SERVICE PARTS(CTR ACCESS)), meaning it is intended as a replacement or spare for existing FX contactors in the field, not as a first-fit component for new assemblies. The single-unit packaging confirms it is ordered per coil, not in bulk reels.","metaTitle":"Schneider TeSys LX4FX400 contactor coil, 400 V DC","metaDescription":"TeSys LX4FX400 contactor coil for FX contactors, 400 V DC control voltage, 100-130 ms opening time. Active production. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","title":"LX4FX400","Category":"18401-WORLD SERVICE PARTS(CTR ACCESS)","description":"contactor coil - FX - 400 V DC","Operating time":"100...130 ms opening 70...80 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FX","Control circuit type":"DC low consumption","Nbr. of units in pkg.":"1","Product or Component Type":"Contactor coil","[Uc] control circuit voltage":"400 V DC","Control circuit voltage limits":"Operational 0.85...1.1 Uc 131 °F (55 °C)) Drop-out 0.2...0.4 Uc 131 °F (55 °C))","Ambient Air Temperature for Operation":"23...131 °F (-5...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/666a7c36845abbacc2bd2ffc779a3cb6.pdf","sourceUrl":"https://www.se.com/us/en/product/LX4FX400/contactor-coil-fx-400-v-dc/"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LX4FX400 in this component family?","answer":"There is no direct pin-compatible alternative within the TeSys FX series for the 400 V DC control voltage. This coil is specific to that voltage variant. For a different control voltage, the corresponding LX4FX coil (e.g., LX4FX110 for 110 V DC) would be the correct replacement, but it is not pin-compatible with the 400 V coil."},{"question":"What is LX4FX400's listed range (TeSys) on this component line?","answer":"The LX4FX400 belongs to the Schneider Electric TeSys range, which is the company's global line of contactors, motor starters, and control circuit components."},{"question":"What is LX4FX400's listed category (18401-WORLD SERVICE PARTS(CTR ACCESS)) on this component line?","answer":"The category 18401-WORLD SERVICE PARTS(CTR ACCESS) indicates this is a service part intended for replacement or repair of existing installations, not a first-fit component for new assemblies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FX400","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/LX4FX400 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}}