{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LX4D7CD","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LX4D7CD","canonicalUrl":"https://aoctrl.com/schneider/LX4D7CD","factsUrl":"https://aoctrl.com/api/mcp/products/LX4D7CD","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca contactor coil, LX4D7CD, 36 V DC standard for 80 A contactor, without built-in suppressor module.","salesMarkdown":"The LX4D7CD is a TeSys Deca contactor coil from Schneider Electric, designed as a 36 V DC standard replacement coil for an 80 A contactor in the TeSys range. It is a service part — category 18401-WORLD SERVICE PARTS (CTR ACCESS) — intended for field replacement or BOM sparing, not new-design procurement. Coil technology is without built-in suppressor module, meaning the installer must provide external flyback suppression (e.g., a free-wheeling diode) across the coil terminals. Omitting this risks conducted EMI backfeeding the 36 VDC control supply and shortening PLC output life. Drop-out voltage limits are 0.1 to 0.3 Uc at under 55 °C — the coil will release the contactor armature when control voltage falls below roughly 3.6 to 10.8 VDC. For a validation engineer, this defines the undervoltage release threshold that must be documented in the control-system FMEA. Time constant of 75 ms and inductance of 4 H (closed circuit) characterize the coil's magnetic build-up and decay. In a high-speed cycling application at 3600 cycles per hour at 60 °C, the 75 ms time constant means the coil is still magnetizing for roughly the first 10% of each cycle — something to account for in timing logic if the contactor must make before a downstream device. The part carries a lifecycle stage of 'current' in one internal system field, but the manufacturer's explicit product status is Obsolete — treat the latter as authoritative for procurement planning. ## Deployment Context and Integration Notes This coil mounts into the TeSys Deca contactor frame — it is not a standalone device. Operating ambient temperature range is -5 to 60 °C (23 to 140 °F). For a panel near a furnace or in a non-conditioned enclosure, verify that the internal panel temperature stays below 60 °C; derating is not specified but the maximum operating rate of 3600 cycles/hour is given at 60 °C. Hold-in power consumption is 22 W at 20 °C — this is the steady-state dissipation once the coil is sealed. In a dense panel with multiple contactors running continuously, the cumulative heat load from several such coils must be factored into the enclosure's thermal budget.","metaTitle":"Schneider Electric LX4D7CD TeSys Deca Contactor Coil, 36 VDC","metaDescription":"LX4D7CD is an obsolete Schneider Electric TeSys Deca contactor coil for 80 A contactors, 36 VDC standard. Sourced to order against RFQ. No built-in suppressor module.","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)","Time constant":"75 ms","Coil technology":"Without built-in suppressor module","lifecycle_stage":"current","Device short name":"LX4D7","Inrush power in W":"22 W 68 °F (20 °C))","Mechanical durability":"10 Mcycles","Nbr. of units in pkg.":"1","Maximum operating rate":"3600 cyc/h 140 °F (60 °C)","Product or Component Type":"Contactor coil","Inductance of closed circuit":"4 H","Control circuit voltage limits":"Drop-out: 0.1...0.3 Uc (at <131 °F (55 °C))","Hold-in power consumption in W":"22 W 68 °F (20 °C)","Ambient Air Temperature for Operation":"23...140 °F (-5...60 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/27809db13cc798f00f2b2595f6e2d045.pdf","sourceUrl":"https://www.se.com/nz/en/product/LX4D7CD/tesys-deca-contactor-coil-lx4d7-36-v-dc-standard-for-80-a-contactor/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LX4D7CD/alternatives.json"},"ai":{"faq":[{"question":"What replaces the LX4D7CD?","answer":"No official successor order code is provided in the lifecycle record. A parametric replacement — same 36 VDC coil voltage, same TeSys Deca contactor frame — must be validated against the original contactor's coil-holder dimensions and electrical ratings. The replacement coil must also have an external suppressor module if the original circuit relied on one."},{"question":"What is the LX4D7CD's range and category?","answer":"It belongs to the TeSys range, category 18401-WORLD SERVICE PARTS (CTR ACCESS), meaning it is a service/repair part for existing TeSys Deca contactors, not a new-design component."},{"question":"What compliance documentation is available for the LX4D7CD?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this part. As an obsolete service coil, documentation may be limited; request material declarations and the original CE declaration of conformity from the surplus channel or Schneider Electric's archive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LX4D7CD","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/LX4D7CD 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}}