{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FF027","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FF027","canonicalUrl":"https://aoctrl.com/schneider/LX4FF027","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FF027","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys LX4FF027, contactor coil, 27 V DC, DC low consumption, without built-in suppressor module, obsolete.","salesMarkdown":"The Schneider Electric LX4FF027 is a replacement contactor coil from the TeSys range, designed for DC low-consumption control circuits at 27 V DC nominal. It's a service part — the kind of item you order when a contactor in the field loses its coil and you need to swap the magnet assembly rather than replace the whole contactor block. The coil pulls in at 0.85 to 1.1 times Uc at 55 °C and drops out between 0.15 and 0.2 Uc — so on a 27 V DC bus it holds in down to roughly 23 V and releases somewhere around 4 to 5.4 V. Operating time runs 30 to 40 ms closing, 30 to 50 ms opening. The 27 V DC coil voltage is the critical fit parameter — it must match the existing contactor's control voltage. The coil has no built-in suppressor module, so if your contactor base expects a suppressed coil or your DC bus has significant switching transients, you will need to add an external flyback diode or RC snubber across the coil terminals. Average resistance is 1.44 ohms inrush and 237.6 ohms holding at 20 °C, which gives you the steady-state current draw for your control transformer sizing. ## Integration note This is a coil-only replacement — it mounts onto the TeSys contactor magnet frame.","metaTitle":"Schneider LX4FF027 TeSys Contactor Coil, 27 V DC, Obsolete","metaDescription":"Schneider Electric LX4FF027 TeSys contactor coil, 27 V DC, obsolete. Sourced to order against RFQ. Operating time 30-40 ms close, 30-50 ms open.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","Category":"18401-WORLD SERVICE PARTS(CTR ACCESS)","Operating time":"30...40 ms closing 30...50 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FF","Average resistance":"1.44 Ohm inrush 68 °F (20 °C) 237.6 Ohm holding 68 °F (20 °C)","Control circuit type":"DC low consumption","Nbr. of units in pkg.":"1","Product or Component Type":"Contactor coil","[Uc] control circuit voltage":"27 V DC","Control circuit voltage limits":"Operational 0.85...1.1 Uc 131 °F (55 °C)) Drop-out 0.15...0.2 Uc 131 °F (55 °C))","Ambient Air Temperature for Operation":"23...131 °F (-5...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a5f1074b7498c6ef70ba300657fd4143.pdf","sourceUrl":"https://www.se.com/th/en/product/LX4FF027/contactor-coil-ff-27-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FF027/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative?","answer":"No official successor or direct replacement order code is listed in the manufacturer's records for this part. For a drop-in fit, you would need to match the 27 V DC coil voltage, the TeSys contactor frame interface, and the mounting footprint. Contact us with your application details for cross-reference support."},{"question":"What is the operating voltage range for this coil?","answer":"The coil operates at 0.85 to 1.1 times Uc (27 V DC) at 55 °C, meaning it pulls in reliably between about 23 V and 29.7 V DC. Drop-out occurs at 0.15 to 0.2 Uc, roughly 4 to 5.4 V DC."},{"question":"Does this coil include a suppression module?","answer":"No, the LX4FF027 is specified as 'without built-in suppressor module'. An external flyback diode or RC snubber must be added across the coil if your circuit requires suppression."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FF027","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/LX4FF027 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}