{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FG154","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FG154","canonicalUrl":"https://aoctrl.com/schneider/LX1FG154","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FG154","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F range, LX1FG154 contactor coil, 154 V AC 50 Hz, 805 VA inrush, 55 VA hold-in, 18...24 W heat dissipation.","salesMarkdown":"The LX1FG154 is a replacement contactor coil from the TeSys F range, wound for 154 V AC 50 Hz control circuits. It's the energizing element for a TeSys F frame contactor — when the coil pulls in, the main poles close and the auxiliary contacts switch. Rated for 805 VA inrush at 50 Hz (cos φ 0.3) dropping to 55 VA hold-in, so the coil sees a heavy initial surge that the control transformer must support without voltage sag. Heat dissipation runs 18...24 W at 50 Hz, which matters for enclosure thermal rise when multiple coils are energized in the same panel. Closing time is 20...35 ms, opening 7...15 ms — fast enough for motor starting duty but not for high-speed synchronous switching. Mechanical durability is 10 Mcycles, so the coil itself is rarely the wear item in a standard panel (the main contacts and arc chambers go first). Maximum operating rate is 2400 cycles/hour at 55 °C; above that, the thermal rise in the coil windings accelerates insulation aging. Control voltage limits are drop-out at 0.35...0.55 Uc and operational pick-up at 0.85...1.1 Uc at 55 °C — meaning the coil drops out cleanly below about 54 V AC and reliably picks up above 131 V AC. If your control supply dips during a downstream fault, this coil may chatter or drop. ## Coil construction note This coil ships without a built-in suppressor module. The inductance of the closed circuit is 1.27 H, and average DC resistance is 8.19 Ω at 20 °C. Without an external RC snubber or varistor across the coil terminals, the inductive kick when de-energizing can couple noise into adjacent control wiring — standard practice is to fit a suppressor (e.g., TeSys LA4 or a generic RC unit) across the coil if the PLC output or relay driving it doesn't have one built in.","metaTitle":"TeSys LX1FG154 Contactor Coil, 154 V AC 50 Hz, Obsolete","metaDescription":"TeSys LX1FG154 contactor coil, 154 V AC 50 Hz, 805 VA inrush, 55 VA hold-in. Obsolete — sourced to order against RFQ. Part of the TeSys F range.","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":"20...35 ms closing 7...15 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Heat dissipation":"18...24 W 50 Hz","Device short name":"LX1FG","Average resistance":"8.19 Ohm 68 °F (20 °C)","Inrush power in VA":"805 VA 50 Hz cos phi 0.3 (at 68 °F (20 °C))","Control circuit type":"AC 50 Hz","Mechanical durability":"10 Mcycles","Nbr. of units in pkg.":"1","Maximum operating rate":"2400 cyc/h 131 °F (55 °C)","Product or Component Type":"Contactor coil","Inductance of closed circuit":"1.27 H","[Uc] control circuit voltage":"154 V AC 50 Hz","Control circuit voltage limits":"Drop-out 0.35...0.55 Uc 50/60 Hz 131 °F (55 °C)) Operational 0.85...1.1 Uc 50/60 Hz 131 °F (55 °C))","Hold-in power consumption in VA":"55 VA 50 Hz cos phi 0.3 (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/82461c8e0198d2a776cd6d560a4749b6.pdf","sourceUrl":"https://www.se.com/th/en/product/LX1FG154/contactor-coil-tesys-f-lx1fg-154-v-ac-50-hz/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX1FG154/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the LX1FG154?","answer":"There is no official pin-compatible successor listed in the lifecycle record. The TeSys F frame contactor body remains active, but the 154 V AC 50 Hz coil voltage is non-standard. A panel re-design to a common coil voltage (110 V AC, 230 V AC, or 24 V DC) is the typical path forward."},{"question":"What range does the LX1FG154 belong to?","answer":"It belongs to the TeSys range, specifically the TeSys F series of contactors and accessories."},{"question":"What is the control circuit voltage and frequency for this coil?","answer":"The control circuit voltage is 154 V AC at 50 Hz. It is not rated for 60 Hz operation."},{"question":"How do I source the LX1FG154 now that it is obsolete?","answer":"Submit an RFQ. We source obsolete parts through our surplus and broker network. No stock or lead time can be guaranteed without a quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FG154","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/LX1FG154 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}}