{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839240","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839240","canonicalUrl":"https://aoctrl.com/schneider/LV839240","factsUrl":"https://aoctrl.com/api/mcp/products/LV839240","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ, MX 2nd opening voltage release, drawout mount, 24 V AC 50/60 Hz / 24...30 V DC, 4.5 VA / 4.5 W holding, 50 ms response.","salesMarkdown":"The LV839240 is a second MX opening coil — a voltage release that trips a MasterPact MTZ breaker when control voltage is applied or removed, depending on the circuit design. It mounts in the drawout cradle of MTZ1, MTZ2, or MTZ3 frames, so the coil stays with the chassis while the breaker slides in and out for maintenance. Control voltage is 24 V AC 50/60 Hz or 24...30 V DC, with a holding draw of 4.5 VA or 4.5 W once energized. Response time is 50 ms ±10 % across all three MTZ frame sizes, so the trip delay is consistent regardless of which breaker frame it's paired with. ## What the drawout mounting means for your panel Drawout mounting means the coil is fixed in the breaker cradle, not on the moving breaker itself. When you rack the MTZ breaker out for inspection or swap, the MX coil stays wired to the control circuit — no need to disconnect flying leads. This is standard for MasterPact drawout gear; if your installation is fixed-mounted (non-drawout), this part will not fit without the cradle assembly.","metaTitle":"Schneider LV839240 MX 2nd Opening Coil, 24V AC/DC, Obsolete","metaDescription":"LV839240 MX 2nd opening voltage release for MasterPact MTZ drawout. 24V AC/DC, 50ms response. Obsolete — sourced to order against RFQ. Confirm fit before specifying.","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":"24 V AC 50/60 Hz 24...30 V DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/78c0885000b28ee7618107a9a34623c6.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839240/mx-2nd-opening-voltage-release-24-v-ac-24-30-v-dc-for-mtz-drawout/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839240/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV839240 and how do I get a price?","answer":"We source the LV839240 to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ with your quantity and target price for a firm response."},{"question":"What is LV839240's listed mounting mode?","answer":"The LV839240 is a drawout-mounted voltage release. It installs in the MasterPact MTZ cradle, not on the breaker itself, so the coil stays wired when the breaker is racked out."},{"question":"What is LV839240's response time?","answer":"The response time is 50 ms ±10 % across MasterPact MTZ1, MTZ2, and MTZ3 frames. The trip delay is consistent regardless of which frame size the coil is paired with."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839240","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/LV839240 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}}