{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FL125","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FL125","canonicalUrl":"https://aoctrl.com/schneider/LX4FL125","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FL125","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric / Square D TeSys contactor coil, 125 V DC, obsolete.","salesMarkdown":"Replacement coil for a contactor, 125 V DC control circuit. Pickup requires at least 0.85 Uc and drop-out occurs between 0.2 and 0.35 Uc at 55 °C. Opening time 40–50 ms, closing 60–70 ms. The coil has no built-in suppressor module. This is critical: you must add an external freewheeling diode or RC snubber across the coil terminals. Without it, the inductive kick – the coil inductance is 230 H and inrush power is 1600 W at 20 °C – will arc across the control contacts and eventually destroy the pilot device or PLC output driving it. That puts it in the standard-duty range for a general-purpose contactor coil. If your application requires frequent on-off cycles (e.g., a resistance heater or motor jogging), verify the duty cycle against the contactor's own rating.","metaTitle":"Schneider LX4FL125 TeSys Contactor Coil, 125 V DC, Obsolete","metaDescription":"Square D LX4FL125 TeSys contactor coil, 125 V DC control circuit. Obsolete per manufacturer; sourced to order via surplus/broker channel. No built-in suppressor – external diode re","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Range":"TeSys","Category":"US10I1222341","Operating time":"40...50 ms opening 60...70 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FL","Inrush power in W":"1600 W 68 °F (20 °C))","Average resistance":"10 Ohm inrush 68 °F (20 °C) 2110 Ohm holding 68 °F (20 °C)","Control circuit type":"DC low consumption","Mechanical durability":"5 Mcycles","Nbr. of units in pkg.":"1","Maximum operating rate":"1200 cyc/h 131 °F (55 °C)","Product or Component Type":"Contactor coil","Inductance of closed circuit":"230 H","[Uc] control circuit voltage":"125 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))","Hold-in power consumption in W":"9 W 68 °F (20 °C)","Ambient Air Temperature for Operation":"23...131 °F (-5...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$730.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7b2cacc429218867826f448717decf89.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FL125/alternatives.json"},"ai":{"faq":[{"question":"What is the direct replacement for this coil?","answer":"The lifecycle record does not list an official successor. Without a manufacturer-assigned replacement order code, the safest equivalent is an identical used or new-old-stock LX4FL125 coil sourced through independent channels."},{"question":"Can this coil drop into a panel built around the 8903SMO3V03 contactor?","answer":"No – the 8903SMO3V03 is a complete electrically held lighting contactor from the Type S series, not a TeSys contactor. The LX4FL125 coil only fits within the TeSys frame. There is no mechanical or electrical interchangeability."},{"question":"What are the key electrical ratings of the LX4FL125?","answer":"Control circuit voltage: 125 V DC. Operating time: 40–50 ms opening, 60–70 ms closing. Inrush power 1600 W at 20 °C, holding power 9 W. No built-in suppressor. Mechanical durability: 5 million cycles. Ambient operating range: -5 to 55 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FL125","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/LX4FL125 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}