{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839237","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839237","canonicalUrl":"https://aoctrl.com/schneider/LV839237","factsUrl":"https://aoctrl.com/api/mcp/products/LV839237","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric, MasterPact MTZ series, MX opening voltage release, LV839237, 277 V AC 50/60 Hz, drawout mounting, 50 ms response time.","salesMarkdown":"The Schneider LV839237 is an MX opening voltage release designed for MasterPact MTZ drawout circuit breakers. It operates on a 277 V AC 50/60 Hz control circuit, drawing 4.5 W / 4.5 VA holding power, and triggers a trip when the control voltage drops to between 0.7 and 1.1 times the rated Un. Response time is 50 ms ±10% across the MTZ1, MTZ2, and MTZ3 frames. The drawout mounting mode means this coil is not a panel-mount standalone device — it plugs into the breaker's drawout cradle as a field-installable accessory. If you are retrofitting an MTZ1, MTZ2, or MTZ3 frame, the 50 ms response time governs how quickly the breaker opens on a control-voltage loss; that timing is consistent across all three frame sizes. The 277 V AC control voltage is the line-to-neutral or line-to-line supply the coil expects — feeding it 240 V or 120 V will shift the trip threshold proportionally (0.7–1.1 Un). Holding power of 4.5 W / 4.5 VA is low enough that a standard control transformer or UPS can support it without derating.","metaTitle":"Schneider LV839237 MX Opening Coil, 277 V AC, for MTZ Drawou","metaDescription":"Schneider LV839237 MX opening voltage release, 277 V AC, for MasterPact MTZ drawout breakers. Obsolete — sourced to order against RFQ. Quoted on request.","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":"MX","Device Application":"Control","Supply holding power":"4.5 W 4.5 VA","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":"277 V AC 50/60 Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8e8c48b77c86771da67aa7b4fd44439.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839237/mx-opening-voltage-release-277-v-ac-for-mtz-drawout/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839237/alternatives.json"},"ai":{"faq":[{"question":"What is LV839237's mounting mode?","answer":"Drawout — it installs into the MasterPact MTZ breaker's drawout cradle, not directly onto a DIN rail or panel."},{"question":"What is the response time of LV839237?","answer":"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/LV839237","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/LV839237 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}}