{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV846552","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV846552","canonicalUrl":"https://aoctrl.com/schneider/LV846552","factsUrl":"https://aoctrl.com/api/mcp/products/LV846552","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPacT, MasterPact MTZ2, LV846552, fixed circuit breaker, 4P, 1250 A at 40 °C, 50 kA Ics at 1150 V AC, Category B, IP30.","salesMarkdown":"## MasterPact MTZ2 — 1250 A Fixed Power Breaker The Schneider Electric LV846552 is a MasterPact MTZ2 fixed circuit breaker rated 1250 A at 40 °C, with a service breaking capacity (Ics) of 50 kA at 1150 V AC. This places it in the H10 performance class — the interrupting rating governs fault clearing for high-energy distribution panels, not just the continuous load. Category B selectivity confirms the breaker is listed for full discrimination with downstream devices — critical for maintaining supply to non-faulted loads in a tiered distribution scheme. Rear connection top and bottom keeps the bus run clean in a fixed-mount switchboard; the 115 mm connection pitch matches standard MasterPact busbar risers. Mechanical durability is rated at 25,000 cycles with periodic preventive maintenance; electrical durability at 500 cycles at rated voltage. These are not trivial numbers — for a main breaker that may see only a few operations per year, the mechanical endurance is effectively life-of-installation. The 100 W power dissipation at rated current must be factored into enclosure ventilation; in a sealed IP30 panel, that heat adds to the internal rise and may require derating or forced airflow. ## Standards & Compliance Documentation Operating altitude is 0–2000 m without derating, 2000–5000 m with derating. The manufacturer provides a declaration of performance, IEC certificate, and material compliance declarations (RoHS, REACH) as standard documentation. ## Integration — Panel Fit & Mounting Fixed mounting on rails or a base plate. Dimensions: 537 mm wide × 352 mm high × 300 mm deep. The 300 mm depth is the front-to-back projection behind the panel door — verify swing clearance for the arc chamber and rear connection access. Control is push-button only; no electronic control unit is fitted. Closing response time is 70 ms maximum, breaking time 25 ms maximum.","metaTitle":"Schneider Electric LV846552 MasterPact MTZ2 1250A Circuit Br","metaDescription":"Schneider Electric LV846552 MasterPact MTZ2 fixed circuit breaker, 1250 A rated, 50 kA Ics at 1150 V AC. Active production, sourced to order. Complies with EN/IEC 60947-2. Request","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":"LV846552","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 12H10 fixed for MicroLogic X, 1250A, 50kA/1150VAC (Icu), 4P","Control type":"Push-button","Control unit":"Without control unit","Product name":"MasterPact MTZ2","Mounting mode":"Fixed","Sensor rating":"630 A 800 A 1000 A 1250 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 12 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":"1250 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":"25000 cycles with periodic preventive maintenance","Power dissipation in W":"100 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":"$13,100.03 – $13,755.05","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c0f42395b5bbaa157b13bda9fde54487.pdf","sourceUrl":"https://www.se.com/vn/en/product/LV846552/circuit-breaker-frame-masterpact-mtz2-12h10-fixed-for-micrologic-x-1250a-50ka-1150vac-icu-4p/"},"ai":{"faq":[{"question":"What compliance documentation does Schneider provide for LV846552?","answer":"The breaker is certified to EN/IEC 60947-1, EN/IEC 60947-2, EN/IEC 60947-2 Annex H, and IEC 61557-12. The manufacturer provides an IEC certificate, declaration of performance, and material compliance declarations (RoHS, REACH, UL file information) as standard documentation for this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV846552","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/LV846552 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}}