{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV846166","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV846166","canonicalUrl":"https://aoctrl.com/schneider/LV846166","factsUrl":"https://aoctrl.com/api/mcp/products/LV846166","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, fixed circuit breaker, 3P, 3200 A at 40 °C, H2V 100 kA 415 V AC, push-button control.","salesMarkdown":"The LV846166 is a Schneider Electric MasterPact MTZ2 fixed-mount circuit breaker, 3-pole, rated 3200 A at 40 °C. It's built for main incoming or large feeder protection in industrial power distribution — the kind of duty where you need the full 100 kA breaking capacity at 440 V AC (H2V performance tier) to handle high-fault upstream busses without cascading. Push that ambient higher and you derate — the -25...70 °C operating range tells you the thermal limits, but the nameplate rating holds only at 40 °C. For a 3200 A main in a hot switchroom, that derating curve matters. The Ics equals Icu here — meaning after clearing a fault at full rating, the breaker is still rated to carry and switch again. That's Category B selectivity, so you can coordinate downstream breakers without worrying about nuisance tripping on a fault that should stay local. Short-time withstand (Icw) is 100 kA for 0.5 s and 1 s, dropping to 75 kA for 3 s. That's the thermal and mechanical stress the breaker can take during a delayed trip — critical for selective coordination with downstream devices that need time to clear a fault first. Dimensions: 422 mm wide, 352 mm high, 300 mm deep. Fixed mount on rails or base plate. Connection pitch is 115 mm. ## Built for the panel, not the lab This is a current-production part — lifecycle stage is active. That means you can spec it into a new panel design without worrying about a last-time-buy window closing mid-project. Spares for an existing MTZ2 installation are straightforward to source. Standards compliance covers the essentials for distribution gear: EN/IEC 60947-1 (general rules), EN/IEC 60947-2 (circuit-breakers), and Annex H for EMC. Also IEC 61557-12 for measuring equipment. Power dissipation is 420 W at rated current. That's not trivial — factor it into the enclosure ventilation calculation. ## What it shrugs off IP30 protection means it keeps out tools and wires larger than 2.5 mm, but it's not sealed against dust or moisture. In a clean indoor switchroom that's fine. If this breaker ends up in a dusty environment — say, a cement plant or mine substation — you'll want it in a proper enclosure, not open-mounted. Operating altitude: full rating up to 2000 m, derated from 2000 to 5000 m. For high-altitude installations (mining in the Andes, for example), account for the reduced dielectric strength and cooling at altitude. Mechanical durability is 15,000 cycles with periodic preventive maintenance. Electrical durability at rated current in AC-23A duty (switching motor loads or similar) is 5000 cycles at 440 V. That's not a switch you'd use for daily cycling of a motor — it's a distribution breaker, designed to stay closed and clear faults, not to be the operational disconnect.","metaTitle":"Schneider Electric LV846166 MasterPact MTZ2 3200A 3P Circuit","metaDescription":"Schneider Electric LV846166 MasterPact MTZ2 fixed circuit breaker, 3200A at 40°C, 3P, 100kA breaking capacity at 440V AC. Active production. Sourced to order. Request 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":"422 mm","Height":"352 mm","Standards":"EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H IEC 61557-12","Control type":"Push-button","Control unit":"Without control unit","Product name":"MasterPact MTZ2","Mounting mode":"Fixed","Sensor rating":"1600 A 2000 A 2500 A 3200 A","lifecycle_stage":"current","Connection pitch":"115 mm","Mounting support":"Rails Base plate","Performance type":"H2V 100 kA 415 V AC","Pollution degree":"3 conforming to IEC 60947-1","Device short name":"MTZ2 32 H2V","Poles description":"3P","Upside connection":"Front Rear","Device application":"Power distribution protection","Operating altitude":"0...2000 m without derating 2000...5000 m with derating","[In] rated current":"3200 A at 40 °C","Downside connection":"Front Rear","Selectivity category":"Category B","Electrical durability":"5000 cycles 440 V AC 50/60 Hz at In conforming to EN/IEC 60947-2 AC-23A: 5000 cycles 440 V AC 50/60 Hz at In conforming to EN/IEC 60947-3 AC-3: 6000 cycles 440 V AC 50/60 Hz at In conforming to EN/IEC 60947-3","Maximum breaking time":"25 ms","Mechanical durability":"15000 cycles with periodic preventive maintenance","Power dissipation in W":"420 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":"1000 V AC 50/60 Hz","[Ue] rated operational voltage":"440 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":"100 kA at 220/415 V AC 50/60 Hz 100 kA at 440 V AC 50/60 Hz","[Uimp] rated impulse withstand voltage":"12 kV","[Icw] rated short-time withstand current":"100 kA 0.5 s 100 kA 1 s 75 kA 3 s","[Icm] rated short-circuit making capacity":"220 kA 220/415 V AC at 50/60 Hz 220 kA 440 V AC at 50/60 Hz","[Icu] rated ultimate short-circuit breaking capacity":"100 kA at 220/415 V AC 50/60 Hz 100 kA at 440 V AC 50/60 Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11,239.29 – $15,112.99","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6aec5ddfa655a03a3dad91b1a1e5f6c5.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV846166/circuit-breaker-frame-masterpact-mtz2-32h2v-fixed-for-micrologic-x-3200a-100ka-415vac-icu-icw-3p/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV846166/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV846166 and what is the lead time?","answer":"LV846166 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 lead-time and price commitment."},{"question":"What is the breaking capacity of LV846166 at 440 V?","answer":"Both Icu and Ics are 100 kA at 440 V AC 50/60 Hz. The Ics equals Icu, so the breaker remains operational after clearing a fault at its full rating."},{"question":"What are the mounting dimensions of LV846166?","answer":"The breaker is 422 mm wide, 352 mm high, and 300 mm deep. It mounts fixed on rails or a base plate, with a connection pitch of 115 mm."},{"question":"What compliance standards does LV846166 meet?","answer":"It complies with EN/IEC 60947-1, EN/IEC 60947-2 (including Annex H for EMC), and IEC 61557-12. It is also certified for isolation per EN/IEC 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV846166","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/LV846166 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}}