{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV848185","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV848185","canonicalUrl":"https://aoctrl.com/schneider/LV848185","factsUrl":"https://aoctrl.com/api/mcp/products/LV848185","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, fixed circuit breaker, 4P, 1250 A at 40 °C, H1 66 kA at 415 V AC, Category B selectivity, IP30.","salesMarkdown":"## MasterPact MTZ2 fixed breaker — 1250 A, 66 kA, Category B The LV848185 is a fixed-mount MasterPact MTZ2 circuit breaker from Schneider Electric, rated 1250 A at 40 °C with H1 performance level delivering 66 kA Ics across the full voltage range up to 690 V AC. Four poles, Category B selectivity — meaning it holds full rated short-time withstand (66 kA for 1 s) so downstream faults are cleared without tripping this main breaker, provided the coordination study respects the Icw envelope. ## Selectivity and coordination — what the 66 kA Ics and Category B mean for the panel Category B per IEC 60947-2 means this breaker is designed for selective coordination: it carries a rated short-time withstand current (Icw) of 66 kA for 0.5 s and 1 s, and 36 kA for 3 s. That Icw window lets downstream protective devices clear a fault before this main breaker trips — critical for a main or tie breaker in a switchboard where nuisance tripping takes the whole bus off-line. ## Mounting and integration — fixed-mount, 4P, front/rear connections Fixed-mount design, 537 mm wide × 352 mm high × 300 mm deep. Mounting support is rails or a base plate — the chassis bolts into the switchgear cubicle, not a DIN rail. Both upside and downside connections accept front or rear terminations, so the same breaker works in either cable-entry or busbar-drop configurations. Connection pitch is 115 mm, which matches standard MasterPact MTZ2 busbar riser spacing. Neutral is on the right side of the 4-pole assembly. ## Environmental and endurance limits Altitude derating applies above 2000 m — no derating needed up to 2000 m, above that consult the thermal curve. Electrical durability is 10,000 cycles at 440 V and 690 V AC per IEC 60947-2, with AC-3 motor-switching duty rated at 6000 cycles. Mechanical durability is 25,000 cycles with periodic preventive maintenance. Power dissipation at rated current is 100 W — factor that into the cubicle ventilation calculation if the breaker is in a sealed compartment with other heat sources.","metaTitle":"Schneider Electric LV848185 MasterPact MTZ2 1250 A Circuit B","metaDescription":"Schneider Electric LV848185 MasterPact MTZ2 fixed circuit breaker, 1250 A rated current, 66 kA Ics at 415 V AC, 4P, H1 performance. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"300 mm","Range":"MasterPacT","Width":"537 mm","title":"LV848185","Height":"352 mm","Standards":"EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H IEC 61557-12","description":"Circuit breaker MTZ2 12H1 - 1250 A - 4P fixed - right neutral - w/o Micrologic","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":"Right","Performance type":"H1 66 kA 415 V AC","Pollution degree":"3 conforming to IEC 60947-1","Device short name":"MTZ2 12 H1","Poles description":"4P","Upside connection":"Front 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":"Front Rear","Selectivity category":"Category B","Electrical durability":"10000 cycles 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 10000 cycles 690 V AC 50/60 Hz conforming to EN/IEC 60947-2 AC-23A: 10000 cycles 440 V AC 50/60 Hz conforming to EN/IEC 60947-3 AC-23A: 10000 cycles 690 V AC 50/60 Hz conforming to EN/IEC 60947-3 AC-3: 6000 cycles 440/690 V AC 50/60 Hz conforming to EN/IEC 60947-3","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":"1000 V AC 50/60 Hz","[Ue] rated operational voltage":"690 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":"66 kA at 220/415 V AC 50/60 Hz 66 kA at 440 V AC 50/60 Hz 66 kA at 500/525 V AC 50/60 Hz 66 kA at 660/690 V AC 50/60 Hz","[Uimp] rated impulse withstand voltage":"12 kV","[Icw] rated short-time withstand current":"66 kA 0.5 s 66 kA 1 s 36 kA 3 s","[Icm] rated short-circuit making capacity":"145 kA 220/415 V AC at 50/60 Hz 145 kA 440 V AC at 50/60 Hz 145 kA 500/525 V AC at 50/60 Hz 145 kA 660/690 V AC at 50/60 Hz","[Icu] rated ultimate short-circuit breaking capacity":"66 kA at 220/415 V AC 50/60 Hz 66 kA at 440 V AC 50/60 Hz 66 kA at 500/525 V AC 50/60 Hz 66 kA at 660/690 V AC 50/60 Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e74e72221ffe220a16d8e2e638708eb2.pdf","sourceUrl":"https://www.se.com/ae/en/product/LV848185/circuit-breaker-mtz2-12h1-1250-a-4p-fixed-right-neutral-w-o-micrologic/"},"ai":{"faq":[{"question":"Where can I buy LV848185 and how do I get a price?","answer":"The LV848185 is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is LV848185's rated breaking capacity at 415 V?","answer":"The rated service breaking capacity (Ics) is 66 kA at 220/415 V AC, 440 V, 500/525 V, and 660/690 V AC — full-voltage rating with no derating across the range."},{"question":"What compliance documentation does Schneider provide for LV848185?","answer":"The breaker is designed and tested to EN/IEC 60947-1, EN/IEC 60947-2, EN/IEC 60947-2 Annex H, and IEC 61557-12. It carries suitability for isolation per EN/IEC 60947-2. For RoHS/REACH declarations, refer to the Schneider Electric product environmental profile for the MasterPact MTZ2 series."},{"question":"What is the closest alternative to LV848185 in the same family?","answer":"Within the MasterPact MTZ2 fixed-mount platform, the primary differentiator is the performance level and rated current. The LV848185 is the 1250 A, H1 (66 kA) variant. A higher interrupting capacity variant (H2 or H3) would be selected if the fault current at the installation point exceeds 66 kA — verify the site's available fault current before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV848185","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/LV848185 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}}