{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FK150","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FK150","canonicalUrl":"https://aoctrl.com/schneider/LX4FK150","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FK150","rawCanonicalId":null},"summary":{"shortDescription":"TeSys FK series contactor coil, 150 V DC, DC low consumption, without built-in suppressor module, 45-60 ms opening / 50-60 ms closing.","salesMarkdown":"The LX4FK150 is a TeSys FK-series contactor coil rated for 150 V DC control circuits, designed as a low-consumption DC coil without a built-in suppressor module. It's a service part — category 18401-WORLD SERVICE PARTS(CTR ACCESS) — meaning it was stocked for replacement in existing TeSys contactor assemblies, not for new builds. Opening time runs 45 to 60 ms; closing time 50 to 60 ms. The coil draws 18.7 Ω inrush at 68 °F (20 °C) and 4595 Ω holding at the same temperature — the high holding resistance is what makes it a low-consumption design, keeping the coil energized without excessive heat once the contactor is sealed. ## Voltage limits and operating window Control voltage limits are specified at 131 °F (55 °C): drop-out occurs between 0.2 and 0.35 Uc (30 to 52.5 V DC), and the operational range is 0.85 to 1.1 Uc (127.5 to 165 V DC). Ambient air temperature for operation is 23 to 131 °F (-5 to 55 °C).","metaTitle":"TeSys LX4FK150 Contactor Coil, 150 V DC, Obsolete","metaDescription":"TeSys LX4FK150 contactor coil, 150 V DC control circuit, DC low consumption. Obsolete — sourced to order against RFQ. 45-60 ms opening, 50-60 ms closing.","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":"45...60 ms opening 50...60 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FK","Average resistance":"18.7 Ohm inrush 68 °F (20 °C) 4595 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":"150 V DC","Control circuit voltage limits":"Drop-out 0.2...0.35 Uc 131 °F (55 °C)) Operational 0.85...1.1 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/ed57cefeb264b246a1b450697650285a.pdf","sourceUrl":"https://www.se.com/th/en/product/LX4FK150/contactor-coil-fk-150-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FK150/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the LX4FK150?","answer":"No official successor order code is documented for this coil. A parametric match would need to be a TeSys FK-series contactor coil at 150 V DC, DC low consumption, without built-in suppressor — but no direct cross-reference is available from the manufacturer."},{"question":"What is the LX4FK150's range and category?","answer":"It belongs to the TeSys range and is classified under category 18401-WORLD SERVICE PARTS(CTR ACCESS) — a service-parts classification for contactor accessories."},{"question":"What are the key electrical ratings for the LX4FK150?","answer":"Control circuit voltage is 150 V DC. Opening time is 45 to 60 ms; closing time 50 to 60 ms. Inrush resistance is 18.7 Ω at 68 °F (20 °C); holding resistance is 4595 Ω at the same temperature. Drop-out voltage is 0.2 to 0.35 Uc (30 to 52.5 V DC); operational range is 0.85 to 1.1 Uc (127.5 to 165 V DC) at 131 °F (55 °C)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FK150","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/LX4FK150 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}}