{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX9FG550","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX9FG550","canonicalUrl":"https://aoctrl.com/schneider/LX9FG550","factsUrl":"https://aoctrl.com/api/mcp/products/LX9FG550","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F specific contactor coil, LX9FG550, 550 V AC 40...400 Hz low consumption, 130 ms opening / 35 ms closing, obsolete lifecycle.","salesMarkdown":"The LX9FG550 is a specific replacement coil for the TeSys F contactor range, designed for a 550 V AC control circuit at 40...400 Hz with low-hold-in consumption. It draws 950...1180 VA inrush and settles to 8.9...10.9 VA holding, with an average resistance of 194 Ω inrush and 7550 Ω holding at 68 °F (20 °C). The coil operates without a built-in suppressor module, so the panel builder must add external suppression (RC snubber or varistor) across the coil terminals if driving from a PLC output or electronic controller — the inductive kick from the 26.3 H closed-circuit inductance will otherwise stress solid-state drivers. Rated control voltage is 550 V AC. The operational voltage window is 0.85...1.1 Uc at 131 °F (55 °C), and drop-out occurs between 0.2...0.55 Uc. Operating time is 130 ms opening and 35 ms closing. The 35 ms close is fast for a 550 V coil; the 130 ms open is comparatively slow — factor this into safety circuit response time calculations if the coil is part of a guard-monitoring chain. ## Deployment context This coil mounts onto a TeSys F contactor in a control panel — typically DIN-rail or backplate mounted. The 550 V AC control circuit is common in 480 V line-voltage motor starters where the control transformer is omitted and the coil is fed directly from the line side through a control fuse. The ambient temperature range of -5...55 °C covers most indoor industrial environments, but the coil's heat dissipation of 8...9.8 W means it contributes to the panel's thermal load. In a densely packed enclosure with multiple TeSys F contactors running continuously, forced ventilation or a larger enclosure may be needed to stay within the rated ambient.","metaTitle":"Schneider LX9FG550 TeSys F contactor coil, 550 V AC, obsolet","metaDescription":"LX9FG550 is a TeSys F specific contactor coil, 550 V AC 40-400 Hz low consumption. Obsolete status; sourced to order against RFQ. Operating time 130 ms open, 35 ms close.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","Category":"18401-WORLD SERVICE PARTS(CTR 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":"194 Ohm inrush 68 °F (20 °C) 7550 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":"26.3 H","[Uc] control circuit voltage":"550 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/a0fb78a511dc1c42347877a778cb5136.pdf","sourceUrl":"https://www.se.com/uk/en/product/LX9FG550/tesys-f-specific-contactor-coil-550-v-ac-40-400-hz-low-consumption/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX9FG550/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the LX9FG550?","answer":"No official successor order code is listed in the lifecycle record. The buyer should verify the contactor frame size and coil mounting interface; a substitute from the same TeSys F range with the same 550 V AC rating and low-consumption specification may be functionally equivalent, but pin compatibility must be confirmed against the contactor's coil terminal layout."},{"question":"Does this coil include a built-in suppressor?","answer":"No. The coil technology is listed as without built-in suppressor module. External suppression (RC snubber or varistor) must be added when driving from electronic outputs."},{"question":"What is the operating time of this coil?","answer":"130 ms opening and 35 ms closing. The 35 ms close is fast; the 130 ms open is relatively slow and should be considered in safety circuit timing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX9FG550","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/LX9FG550 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}}