{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FH040","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FH040","canonicalUrl":"https://aoctrl.com/schneider/LX4FH040","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FH040","rawCanonicalId":null},"summary":{"shortDescription":"TeSys F, contactor coil, LX4FH040, 48 V DC wide range, obsolete.","salesMarkdown":"The LX4FH040: Coil technology is without built-in suppressor module. An external flyback diode or RC snubber must be added across the coil terminals when driving from a PLC or solid-state output — the coil's inductance of 59.5 H closed circuit will generate a significant inductive kick without one. Operating time runs 40 to 50 ms closing, 40 to 65 ms opening — consistent with the TeSys F family's standard response for a DC coil. Ambient temperature range spans -55 to 70 °C, so it works in outdoor cabinets or near ovens as long as the contactor's own rating is respected. ## Sourcing reality — obsolete part If you need a drop-in replacement, the closest functional match would be another TeSys F coil at the same 48 V DC control voltage — but pinout and mounting dimensions must be cross-checked against the specific contactor frame (LX4F... base). ## Electrical characteristics at a glance Inrush power hits 750 W at 20 °C, dropping to 5 W holding — typical for a DC-operated contactor coil that must pull in the armature against spring force then hold with much less energy. Average resistance is 2.19 Ω inrush, 400 Ω holding at 20 °C. Control voltage limits: operational range is 0.7 to 1.25 times Uc at 70 °C, drop-out occurs between 0.2 and 0.45 times Uc. This wide-range design tolerates voltage sag on long cable runs better than a standard 48 V coil. Maximum operating rate is 60 cycles per hour at 70 °C, with mechanical durability rated at 1 million cycles — sufficient for most process control applications but not for high-speed cycling like a pick-and-place machine.","metaTitle":"TeSys LX4FH040 Contactor Coil, 48 V DC, Obsolete","metaDescription":"TeSys F LX4FH040 contactor coil for 48 V DC wide range control. Obsolete — sourced to order against RFQ. No built-in suppressor. 40-50 ms closing time.","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":"40...50 ms closing 40...65 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FH","Inrush power in W":"750 W 68 °F (20 °C))","Average resistance":"2.19 Ohm inrush 68 °F (20 °C) 400 Ohm holding 68 °F (20 °C)","Control circuit type":"DC wide range","Mechanical durability":"1 Mcycles","Nbr. of units in pkg.":"1","Maximum operating rate":"60 cyc/h 158 °F (70 °C)","Product or Component Type":"Contactor coil","Inductance of closed circuit":"59.5 H","[Uc] control circuit voltage":"48 V DC","Control circuit voltage limits":"Operational 0.7...1.25 Uc 158 °F (70 °C)) Drop-out 0.2...0.45 Uc 158 °F (70 °C))","Hold-in power consumption in W":"5 W 68 °F (20 °C)","Ambient Air Temperature for Operation":"-67...158 °F (-55...70 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cceb960309bb2695829d5517932b38bc.pdf","sourceUrl":"https://www.se.com/th/en/product/LX4FH040/tesys-f-contactor-coil-lx4fh-48-v-dc-wide-range/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FH040/alternatives.json"},"ai":{"faq":[{"question":"Does the LX4FH040 coil include a built-in suppression diode?","answer":"No. The coil technology is without built-in suppressor module. You must add an external flyback diode or RC snubber when driving from a solid-state output to protect against the inductive kick from the 59.5 H closed-circuit inductance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FH040","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/LX4FH040 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}}