{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839258","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839258","canonicalUrl":"https://aoctrl.com/schneider/LV839258","factsUrl":"https://aoctrl.com/api/mcp/products/LV839258","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric LV839258, XF closing voltage release, 277 V AC 50/60 Hz, for MasterPact MTZ drawout circuit breakers.","salesMarkdown":"The LV839258 is an XF closing voltage release — a solenoid-style coil that, when energized, mechanically closes the breaker contacts. It's designed for MasterPact MTZ drawout circuit breakers, meaning it mounts into the breaker's accessory compartment and connects via the drawout cradle's control wiring. The coil holds at 4.5 VA / 4.5 W — a low continuous draw that keeps the control transformer sizing modest. The threshold tripping voltage is 0.85 to 1.1 times the rated control voltage (Un), so on a 277 V circuit the coil reliably picks up between about 235 V and 305 V. Below 235 V it drops out, which is the intended undervoltage-release behavior for this accessory type. Response time varies by breaker frame: 55 ms ±10% on the MTZ1, 70 ms ±10% on the MTZ2, and 80 ms ±10% on the MTZ3. That's the mechanical closing time from coil energization to main-contact touch — fast enough for most transfer and sequencing schemes, but not a high-speed closing application.","metaTitle":"Schneider Electric LV839258 XF Closing Coil, 277 V AC, for M","metaDescription":"Schneider LV839258 XF closing voltage release for MasterPact MTZ drawout breakers. 277 V AC 50/60 Hz, 4.5 VA/W holding power. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Air Circuit Breakers"],"specifications":{"Mounting Mode":"Drawout","Response time":"55 ms +/- 10 % MasterPact MTZ1 70 ms +/- 10 % MasterPact MTZ2 80 ms +/- 10 % MasterPact MTZ3","lifecycle_stage":"current","Device short name":"XF","Device Application":"Control","Supply holding power":"4.5 VA 4.5 W","Voltage release type":"Closing coil","Nbr. of units in pkg.":"1","Product or Component Type":"Voltage release","Threshold tripping voltage":"0.85...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/8e3098be4a6de0c87ba99268cd72bdfc.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839258/xf-closing-voltage-release-277-v-ac-for-mtz-drawout/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839258/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV839258?","answer":"We source it to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is the mounting mode for LV839258?","answer":"Drawout — it installs into the accessory compartment of a MasterPact MTZ drawout breaker, not a fixed-mount chassis."},{"question":"What is the response time of LV839258?","answer":"55 ms ±10% on MTZ1 frames, 70 ms ±10% on MTZ2, and 80 ms ±10% on MTZ3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839258","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/LV839258 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}}