{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4FG045","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4FG045","canonicalUrl":"https://aoctrl.com/schneider/LX4FG045","factsUrl":"https://aoctrl.com/api/mcp/products/LX4FG045","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys contactor coil, LX4FG045, 45 V DC wide-range control circuit, 30...40 ms closing, 30...50 ms opening.","salesMarkdown":"The LX4FG045 is a replacement contactor coil from the Schneider Electric TeSys range, designed for DC wide-range control circuits at 45 V DC nominal. It's the service part that mates with the FG-series contactor armature — not a standalone contactor, just the coil assembly you swap when the old one opens or the winding goes open-circuit. Closing time runs 30 to 40 ms, opening 30 to 50 ms. The coil draws a 2.52 Ω inrush at 20 °C, then settles to 557.8 Ω holding — that's a DC wide-range design that pulls in hard and holds on low power, which is typical for TeSys FG contactors in panel applications where you want consistent pick-up across a sagging bus. Operational voltage window is 0.85 to 1.1 times Uc at 55 °C, meaning it reliably picks up at about 38 V DC and stays sealed up to 49.5 V DC. Drop-out range is 0.15 to 0.2 Uc — roughly 6.75 to 9 V DC — so it drops cleanly on a control-power loss without chattering. What that means for a BOM line: if this coil is on your panel's spare-parts list or a legacy machine's bill of materials, the only practical sourcing path is through surplus or broker channels. We can quote it against an RFQ — condition is everything on these, and we'll tell you what we find (new-in-box sealed surplus is the ideal; used pulls are a different conversation). No built-in suppressor module on this coil, so if your control circuit relies on a free-wheeling diode or varistor, it's external — verify the existing panel wiring includes one before you swap, or the back-EMF from the coil collapse can take out a PLC output or a 24 VDC supply.","metaTitle":"Schneider LX4FG045 TeSys Contactor Coil, 45 V DC, Obsolete","metaDescription":"Schneider Electric LX4FG045 TeSys contactor coil, 45 V DC control voltage, obsolete. Sourced to order against RFQ. Operating time 30-40 ms close, 30-50 ms open.","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":"30...40 ms closing 30...50 ms opening","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4FG","Average resistance":"2.52 Ohm inrush 68 °F (20 °C) 557.8 Ohm holding 68 °F (20 °C)","Control circuit type":"DC wide range","Nbr. of units in pkg.":"1","Product or Component Type":"Contactor coil","[Uc] control circuit voltage":"45 V DC","Control circuit voltage limits":"Operational 0.85...1.1 Uc 131 °F (55 °C)) Drop-out 0.15...0.2 Uc 131 °F (55 °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/3b8ac3544297024021d8c26f6562248f.pdf","sourceUrl":"https://www.se.com/vn/en/product/LX4FG045/contactor-coil-fg-45-v-dc/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4FG045/alternatives.json"},"ai":{"faq":[{"question":"What replaces the LX4FG045?","answer":"No official successor order code is recorded for this specific 45 V DC coil variant. A direct replacement would need to match the FG-series armature interface and the 45 V DC wide-range control voltage. Without a Schneider-announced cross, the safest path is sourcing the original LX4FG045 from surplus."},{"question":"What are the key electrical ratings for the LX4FG045?","answer":"45 V DC nominal control voltage, operational range 0.85 to 1.1 Uc (38 to 49.5 V DC), drop-out 0.15 to 0.2 Uc (6.75 to 9 V DC). Closing time 30 to 40 ms, opening 30 to 50 ms. Coil resistance 2.52 Ω inrush, 557.8 Ω holding at 20 °C."},{"question":"Does the LX4FG045 include a built-in suppression module?","answer":"No. The coil is listed as 'without built-in suppressor module'. External suppression (diode or RC snubber) must be provided in the control circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4FG045","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/LX4FG045 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}}