{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX9FG042","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX9FG042","canonicalUrl":"https://aoctrl.com/schneider/LX9FG042","factsUrl":"https://aoctrl.com/api/mcp/products/LX9FG042","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F series, LX9FG042 specific contactor coil, 42 V AC 40-400 Hz low consumption, obsolete.","salesMarkdown":"The Schneider Electric LX9FG042 is a specific replacement coil for the TeSys F contactor range, designed for a 42 V AC control circuit operating across 40 to 400 Hz. It is a low-consumption AC coil without a built-in suppressor module, meaning the installer must fit an external RC snubber or varistor across the coil if driving it from a PLC output or solid-state relay that needs protection from back-EMF. The coil draws an inrush of 950 to 1180 VA at 68 °F (20 °C) and holds at 8.9 to 10.9 VA, which is typical for a large-frame contactor; the holding power is low enough to run warm without excessive panel heat. ## Sourcing Reality: Obsolete, Sourced to Order We source it against an RFQ; there is no factory lead time to quote. Control voltage is 42 V AC, with an operational range of 0.85 to 1.1 Uc (35.7 to 46.2 V) at 131 °F (55 °C). Drop-out occurs between 0.2 and 0.55 Uc (8.4 to 23.1 V). If your control transformer is feeding a long 42 V circuit, voltage drop at the coil terminals must stay above 35.7 V or the contactor may chatter. Opening time is 130 ms; closing time is 35 ms. That 130 ms opening delay is slow for a safety circuit — this coil is not suitable for an emergency-stop contactor that must drop out in under 100 ms. That is a standard industrial duty cycle — fine for conveyors and pumps, not for high-speed pick-and-place. Heat dissipation runs 8 to 9.8 W. In a sealed, uncooled panel with multiple contactors running continuously, that heat adds up. Leave an air gap or use a ventilated enclosure if you are grouping several TeSys F contactors. ## Deployment Context: Panel Integration The TeSys F contactor range is a DIN-rail or screw-panel mounted frame common in motor control centres and industrial control panels. The LX9FG042 coil is the replaceable actuator that snaps onto the contactor base.","metaTitle":"TeSys LX9FG042 Contactor Coil, 42 V AC, Obsolete","metaDescription":"Schneider TeSys LX9FG042 specific contactor coil, 42 V AC 40-400 Hz, low consumption. Obsolete; sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","Category":"22341-CONTACTOR,D,K,&F ACCESS","Operating time":"130 ms opening 35 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Heat dissipation":"8...9.8 W","Device short name":"LX9FG","Average resistance":"1.75 Ohm inrush 68 °F (20 °C) 45.61 Ohm holding 68 °F (20 °C)","Inrush power in VA":"950...1180 VA 40...400 Hz (at 68 °F (20 °C))","Control circuit type":"AC 40...400 Hz low consumption","Mechanical durability":"10 Mcycles","Nbr. of units in pkg.":"1","Maximum operating rate":"2400 cyc/h 131 °F (55 °C)","Product or Component Type":"Specific contactor coil","Inductance of closed circuit":"0.25 H","[Uc] control circuit voltage":"42 V AC 40...400 Hz","Control circuit voltage limits":"Operational 0.85...1.1 Uc 131 °F (55 °C)) Drop-out 0.2...0.55 Uc 131 °F (55 °C))","Hold-in power consumption in VA":"8.9...10.9 VA 40...400 Hz (at 68 °F (20 °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/a2ebc98f469f80c49dc6db419dd5698f.pdf","sourceUrl":"https://www.se.com/th/en/product/LX9FG042/tesys-f-specific-contactor-coil-42-v-ac-40-400-hz-low-consumption/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX9FG042/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the LX9FG042?","answer":"There is no official successor listed in the lifecycle record. A surplus or broker channel is the only source for this exact order code."},{"question":"What is the control voltage and frequency range for this coil?","answer":"It is a 42 V AC coil rated for 40 to 400 Hz. The operational voltage limits are 0.85 to 1.1 Uc (35.7 to 46.2 V) at 131 °F (55 °C)."},{"question":"Does this coil include a built-in suppressor?","answer":"No. The coil is specified as without built-in suppressor module. An external RC snubber or varistor must be added if the driving circuit requires back-EMF protection."},{"question":"What compliance documentation is available for the LX9FG042?","answer":"The lifecycle record does not include RoHS, REACH, UL, or IEC documentation for this obsolete part. Contact us with your RFQ and we can check archive records on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX9FG042","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/LX9FG042 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}}