{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FJ048","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FJ048","canonicalUrl":"https://aoctrl.com/schneider/LX4FJ048","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FJ048","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys range, LX4FJ048 contactor coil, 48 V DC control circuit, DC low consumption, obsolete lifecycle.","salesMarkdown":"The Schneider LX4FJ048 is a replacement contactor coil from the TeSys range, designed for 48 V DC control circuits. It's a DC low-consumption type — meaning the inrush surge is short and the hold-in power stays low, which matters when the control transformer or DC supply is already loaded with other coils. Coil draw: 1000 W inrush at 20 °C, settling to 6 W holding at the same temperature. The inrush resistance is 2.5 Ohm; the holding resistance jumps to 558 Ohm as the armature seals. That's a 220× ratio — typical for a DC economizer design, not a simple resistor-limited coil. Operating time is 45 to 60 ms opening, 50 to 60 ms closing. ## Control voltage limits and coil behaviour The 48 V DC coil has defined pick-up and drop-out thresholds. It operates reliably between 0.85 and 1.1 Uc at 55 °C — so 40.8 to 52.8 V DC. Drop-out occurs between 0.2 and 0.35 Uc (9.6 to 16.8 V DC) at the same temperature. This wide drop-out band means the coil will release cleanly on a sagging DC bus without chattering. The closed-circuit inductance is 56 H, which combined with the 558 Ohm holding resistance gives a time constant of about 100 ms. That's relevant if you're sequencing multiple contactors off the same DC supply — the inductive kick from one coil can affect the pick-up timing of another if the supply isn't stiff enough. No built-in suppressor module on this coil. If your circuit needs flyback suppression (and it usually does with a DC coil driven by a PLC output or relay), you'll add a free-wheeling diode or a varistor externally. The coil itself is just the winding. ## Where this coil fits This coil is intended for TeSys D and TeSys F contactor frames — the ones that accept a separate coil as a field-replaceable part. It's not a complete contactor; it's the magnetic actuator that pulls the main poles in. If you're rebuilding a panel and the contactor body is sound but the coil is open or shorted, this is the swap part.","metaTitle":"Schneider LX4FJ048 TeSys Contactor Coil, 48 V DC, Obsolete","metaDescription":"Schneider LX4FJ048 TeSys contactor coil, 48 V DC control voltage, DC low consumption type. Now obsolete; sourced to order from remaining channel stock against an 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":"45...60 ms opening 50...60 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FJ","Inrush power in W":"1000 W 68 °F (20 °C))","Average resistance":"2.5 Ohm inrush 68 °F (20 °C) 558 Ohm holding 68 °F (20 °C)","Control circuit type":"DC 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":"Contactor coil","Inductance of closed circuit":"56 H","[Uc] control circuit voltage":"48 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":"6 W 68 °F (20 °C)","Ambient Air Temperature for Operation":"23...131 °F (-5...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$293.37","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/13fffe91bc7a60daf445a263797b1282.pdf","sourceUrl":"https://www.se.com/us/en/product/LX4FJ048/tesys-f-contactor-coil-lx4fj-48-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FJ048/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the LX4FJ048?","answer":"Schneider does not list an official successor order code for this coil. The closest functional match would be another TeSys 48 V DC coil with the same mounting pattern and coil power characteristics, but you'll need to verify the mechanical interface against your contactor frame — there is no pin-compatible drop-in announced."},{"question":"What is the control voltage and power consumption?","answer":"The coil is rated for 48 V DC control voltage. Inrush power is 1000 W at 20 °C; holding power is 6 W at 20 °C. The inrush resistance is 2.5 Ohm, and the holding resistance is 558 Ohm at the same temperature."},{"question":"Does this coil have built-in surge suppression?","answer":"No, the coil is supplied without a built-in suppressor module. External flyback suppression (diode or varistor) must be added to the circuit if needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FJ048","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/LX4FJ048 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}}