{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839268","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839268","canonicalUrl":"https://aoctrl.com/schneider/LV839268","factsUrl":"https://aoctrl.com/api/mcp/products/LV839268","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ, MN diagnostic undervoltage release, 200-250 V AC/DC, drawout, safety device.","salesMarkdown":"The Schneider Electric LV839268 is an MN diagnostic undervoltage release for MasterPact MTZ drawout circuit breakers. It monitors the control circuit voltage and trips the breaker when voltage drops below the threshold — a safety function that prevents motor or equipment restart after a power dip. Tripping threshold is 0.35 to 0.7 Un on opening and 0.85 Un on closing. Holding power draw is 4.5 W / 4.5 VA. Response time is 40 ms ±5% on MasterPact MTZ1, and 90 ms ±5% on MTZ2 and MTZ3 frames. Drawout mounting means this release plugs into the MasterPact MTZ cradle — no hard wiring to the breaker itself. The signalling function (coil powered MN open error) gives a remote indication that the undervoltage coil is energized and the breaker is ready to close, or that a trip has occurred. For a safety circuit, this diagnostic output lets a PLC or safety relay confirm the breaker state without adding auxiliary contacts.","metaTitle":"Schneider Electric LV839268 MN Diagnostic Undervoltage Relea","metaDescription":"Schneider Electric LV839268 MN diagnostic undervoltage release for MasterPact MTZ drawout breakers. 200-250 V AC/DC control circuit, safety-rated. Obsolete — sourced to order again","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Air Circuit Breakers"],"specifications":{"Control Type":"Communicating","Mounting Mode":"Drawout","Response time":"40 ms +/- 5 % MasterPact MTZ1 90 ms +/- 5 % MasterPact MTZ2 90 ms +/- 5 % MasterPact MTZ3","lifecycle_stage":"current","Device short name":"MN diag","Device Application":"Safety","Signalling function":"Coil powered MN open Error","Supply holding power":"4.5 W 4.5 VA","Voltage release type":"Undervoltage release","Nbr. of units in pkg.":"1","Product or Component Type":"Voltage release","Threshold tripping voltage":"0.35...0.7 Un on opening 0.85 Un on closing","[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/18985a30c2e55f374f0c801baa839c7b.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839268/mn-diagnostic-undervoltage-release-200-250-v-ac-dc-for-mtz-drawout/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839268/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to LV839268 in this component family?","answer":"No official successor order code is recorded for the LV839268. The replacement may involve a different release family or a cradle adapter for the MasterPact MTZ drawout frame. A direct cross-reference is not available from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839268","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/LV839268 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}}