{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX1FF048","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX1FF048","canonicalUrl":"https://aoctrl.com/schneider/LX1FF048","factsUrl":"https://aoctrl.com/api/mcp/products/LX1FF048","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F contactor coil LX1FF048, 48 V AC 50 Hz control circuit, 550 VA inrush power, 45 VA hold-in, without built-in suppressor module.","salesMarkdown":"## Control voltage and transformer sizing for the LX1FF048 coil The LX1FF048 is the 48 V AC 50 Hz replacement coil for the TeSys F contactor range. The inrush draw is 550 VA at 50 Hz with a 0.3 power factor, dropping to 45 VA once the contactor seals. That 12:1 inrush-to-seal ratio means the control transformer must be sized for the inrush peak without saturating — a 100 VA transformer will drop below the 0.85 Uc pick-up threshold on the first half-cycle if the line impedance is high. The coil has no built-in suppressor module. The controls integrator must add an external RC snubber or a bidirectional TVS across the coil terminals to limit the inductive kick-back when the PLC output or relay contact opens. Without it, the flyback pulse can weld the driving contact or couple noise into the 24 V DC logic rail. ## Pick-up and drop-out margins for brownout ride-through The wide hysteresis means the contactor stays sealed through a 50 % voltage sag — useful for motor starter coordination during a line disturbance. If the control voltage is fed from a UPS with a 48 V nominal output that sags to 42 V during battery discharge, the coil still holds in. ## Thermal load and cycling limits in a panel The coil dissipates 12 to 16 W at 50 Hz when energised. In a sealed panel with multiple contactors running continuously, that heat adds up — a panel with six LX1FF coils on a production line dumps 72 to 96 W into the enclosure, enough to raise the internal temperature above the 131 °F (55 °C) operating limit if ventilation is inadequate. Maximum cycling rate is 2400 cycles per hour at 131 °F (55 °C), with a mechanical life of 10 million cycles. The closing time is 23 to 35 ms and opening time 5 to 15 ms. For a conveyor jogging at 40 cycles per minute (2400/h), the coil hits its mechanical life in about 70 days of continuous jogging — plan for a PM swap at that interval. ## Coil DC parameters for snubber and diagnostic circuit design The closed-circuit inductance is 0.16 H and the average DC resistance is 1.17 Ω at 68 °F (20 °C). The steady-state DC current is roughly 41 A — that sounds high, but remember this is an AC coil; the impedance at 50 Hz is dominated by the inductive reactance (j50.3 Ω), not the DC resistance. The DC values matter for sizing a suppression network: the RC snubber time constant should be below the coil's L/R ratio to avoid delaying the drop-out.","metaTitle":"Schneider Electric LX1FF048 TeSys F Contactor Coil","metaDescription":"Schneider Electric LX1FF048 TeSys F contactor coil, 48 V AC 50 Hz control voltage, 550 VA inrush / 45 VA hold-in. Active production. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactor & Starter Coils"],"specifications":{"Range":"TeSys","title":"LX1FF048","Category":"22341-CONTACTOR,D,K,&F ACCESS","description":"TeSys F - contactor coil - LX1FF - 48 V AC 50 Hz","Operating time":"23...35 ms closing 5...15 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Heat dissipation":"12...16 W 50 Hz","Device short name":"LX1FF","Average resistance":"1.17 Ohm 68 °F (20 °C)","Inrush power in VA":"550 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":"0.16 H","[Uc] control circuit voltage":"48 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":"45 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":"$63.50 – $116.59","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/ie/en/product/LX1FF048/tesys-f-contactor-coil-lx1ff-48-v-ac-50-hz/"},"ai":{"faq":[{"question":"What is the inrush and hold-in VA for the LX1FF048 coil?","answer":"The inrush power is 550 VA at 50 Hz with a 0.3 power factor, and the hold-in power is 45 VA at 50 Hz with a 0.3 power factor, both measured at 68 °F (20 °C). The control transformer must be sized for the inrush peak."},{"question":"Does the LX1FF048 coil have a built-in suppressor?","answer":"No, the coil is supplied without a built-in suppressor module. An external RC snubber or bidirectional TVS must be added across the coil terminals to suppress the inductive flyback when the control contact opens."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX1FF048","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/LX1FF048 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}