{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV846557","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV846557","canonicalUrl":"https://aoctrl.com/schneider/LV846557","factsUrl":"https://aoctrl.com/api/mcp/products/LV846557","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, fixed circuit breaker, 4P, 4000 A at 40 °C, H10 50 kA 1150 V AC, Category B, rear connections, IP30.","salesMarkdown":"## MasterPact MTZ2 40 H10 — 4000 A fixed breaker The LV846557 is a fixed-mount MasterPact MTZ2 circuit breaker, 4 poles, rated 4000 A at 40 °C. It belongs to the H10 performance class, delivering 50 kA service breaking capacity (Ics) at 1150 V AC — the voltage level common in large industrial distribution and data-center power paths. Category B selectivity means it coordinates downstream with full discrimination up to its Icu, so a fault on a branch feeder clears without dropping the main bus. The sensor rating range (2000 A / 2500 A / 3200 A / 4000 A) lets you match the electronic trip unit to the actual load, not the breaker frame. Ics of 50 kA at 1150 V AC is the service rating: the breaker clears that fault and is expected to be usable afterward, not just survive once. Icw of 50 kA for 3 seconds supports selective coordination with downstream feeders — the breaker holds closed long enough for the branch device to clear. Rear connections both top and bottom suit switchboard or drawout-cassette installations where cable access is from the back. Dimensions 537 mm wide × 352 mm high × 300 mm deep; the 115 mm connection pitch matches standard busbar and cable-lug spacing for this frame size. Designed to EN/IEC 60947-1 and 60947-2, plus Annex H for power circuit-breaker coordination and IEC 61557-12 for measuring equipment. Isolation capability is confirmed per EN/IEC 60947-2 — the breaker can serve as a visible disconnect when open.","metaTitle":"Schneider Electric LV846557 MasterPact MTZ2 4000 A, 4P Circu","metaDescription":"LV846557 MasterPact MTZ2 fixed circuit breaker, 4000 A rated current, 50 kA at 1150 V AC, Category B, 4 poles, rear connections. Active 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":"LV846557","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 40H10 fixed for MicroLogic X, 4000A, 50kA/1150VAC (Icu), 4P","Control type":"Push-button","Control unit":"Without control unit","Product name":"MasterPact MTZ2","Mounting mode":"Fixed","Sensor rating":"2000 A 2500 A 3200 A 4000 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 40 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":"4000 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":"650 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/e4675130f6f7de0358c668054b6c1f11.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV846557/circuit-breaker-frame-masterpact-mtz2-40h10-fixed-for-micrologic-x-4000a-50ka-1150vac-icu-4p/"},"ai":{"faq":[{"question":"What is LV846557's rated current and breaking capacity?","answer":"The LV846557 is rated 4000 A continuous at 40 °C, with a service breaking capacity (Ics) of 50 kA at 1150 V AC and a short-time withstand (Icw) of 50 kA for 3 seconds."},{"question":"What compliance standards does LV846557 meet?","answer":"LV846557 complies with EN/IEC 60947-1, EN/IEC 60947-2, EN/IEC 60947-2 Annex H, and IEC 61557-12. It is rated for isolation and carries a pollution degree of 3 per IEC 60947-1."},{"question":"Where can I buy LV846557?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV846557","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/LV846557 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}}