{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV846555","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV846555","canonicalUrl":"https://aoctrl.com/schneider/LV846555","factsUrl":"https://aoctrl.com/api/mcp/products/LV846555","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPacT MTZ2, LV846555, fixed 4P air circuit breaker, 2500 A rated current, 50 kA at 1150 V AC, Category B, IP30.","salesMarkdown":"The LV846555 is a MasterPact MTZ2 fixed air circuit breaker from the MasterPacT range, rated 2500 A at 40 °C and built for power distribution protection in industrial and commercial switchboards. It's a 4-pole unit with rear connections top and bottom, designed for Category B selectivity — meaning it holds through a downstream fault and only opens when the fault is on its own bus. That selectivity is the key for a plant engineer coordinating a multi-level distribution scheme: you size the main breaker so a feeder fault doesn't take the whole line down. Rated making capacity (Icm) hits 105 kA at 1150 V AC, so it closes against a full bolted fault without welding contacts. For a site electrical engineer, the Icw at 3 seconds is the number that decides whether your coordination study passes. ## Physical integration and environmental limits Fixed mounting on rails or base plate, with a 115 mm connection pitch. IP30 protection means it's suited for indoor switchboards where tools or fingers are the main concern, not hose-down. Also listed to IEC 61557-12 for IT system monitoring. Impulse withstand voltage is 12 kV (Uimp), which covers typical surge environments in industrial distribution. ## Durability and maintenance Mechanical durability is 20,000 cycles with periodic preventive maintenance; electrical durability is 500 cycles at 1150 V AC, 50/60 Hz per IEC 60947-2. Maximum breaking time is 25 ms, closing response time 70 ms.","metaTitle":"LV846555 MasterPact MTZ2 2500 A 50 kA 4P Circuit Breaker","metaDescription":"LV846555 MasterPact MTZ2 2500 A 4P circuit breaker, 50 kA at 1150 V AC, Category B, IP30. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"Depth":"300 mm","Range":"MasterPacT","Width":"537 mm","title":"LV846555","Height":"352 mm","Standards":"EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H IEC 61557-12","description":"Circuit breaker frame, MasterPact MTZ2 25H10 fixed for MicroLogic X, 2500A, 50kA/1150VAC (Icu), 4P","Control type":"Push-button","Control unit":"Without control unit","Product name":"MasterPact MTZ2","Mounting mode":"Fixed","Sensor rating":"1250 A 1600 A 2000 A 2500 A","lifecycle_stage":"current","Connection pitch":"115 mm","Mounting support":"Rails Base plate","Neutral position":"Left","Performance type":"H10 50 kA 1150 V AC","Pollution degree":"3 conforming to IEC 60947-1","Device short name":"MTZ2 25 H10","Poles description":"4P","Upside connection":"Rear","Device application":"Power distribution protection","Operating altitude":"0...2000 m without derating 2000...5000 m with derating","[In] rated current":"2500 A at 40 °C","Downside connection":"Rear","Selectivity category":"Category B","Electrical durability":"500 cycles 1150 V AC 50/60 Hz conforming to EN/IEC 60947-2","Maximum breaking time":"25 ms","Mechanical durability":"20000 cycles with periodic preventive maintenance","Power dissipation in W":"260 W","IP degree of protection":"IP30 conforming to EN 60529","Product or component type":"Circuit breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Maximum closing response time":"70 ms","[Ui] rated insulation voltage":"1250 V AC 50/60 Hz","[Ue] rated operational voltage":"1150 V AC 50/60 Hz","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"50 kA at 1150 V AC 50/60 Hz","[Uimp] rated impulse withstand voltage":"12 kV","[Icw] rated short-time withstand current":"50 kA 1 s 50 kA 0.5 s 50 kA 3 s","[Icm] rated short-circuit making capacity":"105 kA 1150 V AC at 50/60 Hz","[Icu] rated ultimate short-circuit breaking capacity":"50 kA at 1150 V AC 50/60 Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12,612.70 – $13,243.34","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/51d3d2c469a7b8675c070b4c3b00c9cf.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV846555/circuit-breaker-frame-masterpact-mtz2-25h10-fixed-for-micrologic-x-2500a-50ka-1150vac-icu-4p/"},"ai":{"faq":[{"question":"How do I get current pricing and availability for LV846555?","answer":"Submit an RFQ through this listing; availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the closest alternative to LV846555 in the MasterPact family?","answer":"The MasterPact MTZ2 platform is the active generation; the LV846555 is a specific fixed, 4-pole, 2500 A variant with rear connections. A different rating (e.g., 1600 A or 2000 A) would require a different order code within the same MTZ2 frame."},{"question":"What compliance documentation does LV846555 carry?","answer":"The breaker conforms to EN/IEC 60947-1, EN/IEC 60947-2, EN/IEC 60947-2 Annex H, and IEC 61557-12. It is suitable for isolation per IEC 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV846555","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/LV846555 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}