{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FK375","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FK375","canonicalUrl":"https://aoctrl.com/schneider/LX4FK375","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FK375","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys F, contactor coil, LX4FK375, 375 V DC, 45...60 ms opening, 50...60 ms closing, 10 Mcycles mechanical durability.","salesMarkdown":"The LX4FK375 is a replacement coil for the TeSys F range of contactors, wound for 375 V DC control. It is a low-consumption DC coil: inrush hits 1100 W at 20 °C, then drops to 6 W holding. The inrush resistance is 225 Ω; holding resistance jumps to 31300 Ω. No built-in suppressor module — the coil technology is bare. You must add a free-wheeling diode across the coil terminals, or the inductive kick when de-energizing will arc across the control contact. Opening time is 45-60 ms; closing is 50-60 ms. That's typical for a large-frame DC coil — the inductance of 5270 H in the closed circuit slows the magnetic decay. For a line that needs fast fault isolation (like a motor circuit dropping on a short), 60 ms is acceptable but not fast. If your safety circuit expects < 20 ms break time, this coil won't meet it without a forced-drop circuit. Mechanical durability is 10 Mcycles. At the maximum operating rate of 2400 cycles/hour at 55 °C, that's about 4167 hours of continuous cycling — roughly 6 months of 24/7 operation. In practice, most TeSys F contactors in motor-starting duty cycle far slower (a few times per hour), so the coil will outlast the contactor's electrical life by a wide margin. The drop-out voltage is 0.2-0.35 Uc at 55 °C — meaning the coil releases when the control voltage falls to 75-131 V DC. That's a wide hysteresis; if your DC bus sags during a motor start, the coil may drop out and re-pick up, causing contactor chatter. Verify your bus regulation holds above 320 V DC under load. ## Sourcing and lifecycle — active, but not a shelf item It is part of the TeSys F range. If you have a TeSys F contactor and the coil failed, this is the correct replacement for a 375 V DC control circuit.","metaTitle":"TeSys LX4FK375 contactor coil, 375 V DC, active","metaDescription":"TeSys F contactor coil LX4FK375, 375 V DC control voltage, 45-60 ms opening time, 10 Mcycles mechanical durability, active production. Sourced to order.","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":"45...60 ms opening 50...60 ms closing","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FK","Inrush power in W":"1100 W 68 °F (20 °C))","Average resistance":"225 Ohm inrush 68 °F (20 °C) 31300 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":"5270 H","[Uc] control circuit voltage":"375 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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/475666200c30bd64eb6e13ac9b1cd0e1.pdf","sourceUrl":"https://www.se.com/us/en/product/LX4FK375/tesys-f-contactor-coil-lx4fk-375-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FK375/alternatives.json"},"ai":{"faq":[{"question":"What contactors does this coil fit?","answer":"It fits the TeSys F range — the same frame as LC1F115, LC1F150, and LC1F185 contactors. It is the correct replacement coil when the control voltage is 375 V DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FK375","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/LX4FK375 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}}