{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839243","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839243","canonicalUrl":"https://aoctrl.com/schneider/LV839243","factsUrl":"https://aoctrl.com/api/mcp/products/LV839243","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ, MX 2nd opening voltage release, 200-250 V AC/DC, drawout mounting, 50 ms response time.","salesMarkdown":"The LV839243 is a Schneider Electric MX 2nd opening voltage release designed for MasterPact MTZ drawout circuit breakers. It operates as a control voltage release, tripping the breaker when the control voltage drops to between 0.7 and 1.1 times the rated Un. The control circuit accepts 200-250 V AC at 50/60 Hz or 200-250 V DC, with a holding power draw of 4.5 VA / 4.5 W. The 50 ms response time (±10%) is consistent across all MTZ frame sizes — MTZ1, MTZ2, and MTZ3. ## Integration note Drawout mounting means the coil installs into the breaker's control wiring cradle — no DIN-rail or panel footprint of its own. The wiring interface is the standard MTZ drawout connector.","metaTitle":"Schneider Electric LV839243 MX Opening Coil, 200-250 V AC/DC","metaDescription":"Obsolete MX 2nd opening voltage release for MasterPact MTZ drawout breakers. 200-250 V AC/DC control circuit. Sourced to order against RFQ. LV839243 specifications.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Air Circuit Breakers"],"specifications":{"Mounting Mode":"Drawout","Response time":"50 ms +/- 10 % MasterPact MTZ1 50 ms +/- 10 % MasterPact MTZ2 50 ms +/- 10 % MasterPact MTZ3","lifecycle_stage":"current","Device short name":"second MX","Device Application":"Control","Supply holding power":"4.5 VA 4.5 W","Voltage release type":"Opening coil","Nbr. of units in pkg.":"1","Product or Component Type":"Voltage release","Threshold tripping voltage":"0.7...1.1 Un","[Uc] control circuit voltage":"200...250 V AC 50/60 Hz 200...250 V DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/26d511cf26a2c6a100eac074c2eeaebf.pdf","sourceUrl":"https://www.se.com/ca/en/product/LV839243/mx-2nd-opening-voltage-release-200-250-v-ac-dc-for-mtz-drawout/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839243/alternatives.json"},"ai":{"faq":[{"question":"What is the mounting mode for LV839243?","answer":"The LV839243 uses drawout mounting, meaning it plugs into the MasterPact MTZ breaker's control wiring cradle rather than mounting on a DIN rail or panel."},{"question":"What is the response time of LV839243?","answer":"The LV839243 has a response time of 50 ms ±10%, consistent across MasterPact MTZ1, MTZ2, and MTZ3 frames."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839243","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/LV839243 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}}