{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV432749","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV432749","canonicalUrl":"https://aoctrl.com/schneider/LV432749","factsUrl":"https://aoctrl.com/api/mcp/products/LV432749","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPact NSX400N LV432749 molded case circuit breaker, 3-pole, 320 A, 85 kA Icu at 415 V AC, MicroLogic 1.3 M electronic trip unit, 690 V AC, fixed mount, toggle control, EN/IEC 60947.","salesMarkdown":"## Overview The LV432749 is a Schneider ComPact NSX400N molded case circuit breaker rated 320 A continuous with an 85 kA interrupting capacity at 415 V AC, built on a 3-pole frame for 690 V AC line-to-line service. It carries a MicroLogic 1.3 M electronic trip unit providing magnetic-only short-circuit protection, suited for motor branch circuits where thermal overload is handled upstream. Compared to the 1-pole LV438690 (160 A, 250 V), the LV432749 triples the pole count and doubles the current rating to 320 A at 690 V, making it the correct choice for three-phase motor feeders rather than single-phase lighting or control panels. The LV432749 remains in active production as a current ComPact NSX catalogue item; standard lead times apply through distribution, and an RFQ confirms availability for the exact build.","metaTitle":"Schneider LV432749 ComPact NSX400N MCCB, 3-pole, 320 A, 85 kA","metaDescription":"Schneider LV432749 ComPact NSX400N MCCB: 3-pole, 320 A, 85 kA at 415 V AC, MicroLogic 1.3 M trip unit, 690 V AC, EN/IEC 60947. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"Range":"ComPact","Depth (D)":"110 mm","Standards":"EN/IEC 60947","Width (W)":"140 mm","Height (H)":"255 mm","Control type":"Toggle","Network type":"AC","Product name":"ComPact NSX","Product weight":"6.05 kg","Trip unit name":"MicroLogic 1.3 M","Number of poles":"3P","Protection type":"I : for short-circuit protection (magnetic)","lifecycle_stage":"mature","Connection pitch":"45 mm","Local signalling":"Flashing LED (green) for ready to operate","Mounting support":"Backplate","Pollution degree":"3 conforming to IEC 60664-1","Range of product":"ComPact NSX400...630","Trip unit rating":"320 A at 65 °C","Device short name":"NSX400N","Network frequency":"50/60 Hz","Performance level":"N 50 kA 415 V AC","Relative humidity":"0...95 %","Upside connection":"Front","Device application":"Motor","Operating altitude":"0...2000 m without derating 2000 m...5000 m with derating","[In] rated current":"320 A at 65 °C","Downside connection":"Front","Overvoltage category":"Class II","Trip unit technology":"Electronic","Utilisation category":"Category A","Electrical durability":"3000 cycles at 690 V In 6000 cycles at 690 V In/2 6000 cycles at 440 V In 12000 cycles at 440 V In/2","Mechanical durability":"15000 cycles","IK degree of protection":"IK07 conforming to IEC 62262","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Without","Product or component type":"Circuit breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Protected poles description":"3t","Circuit breaker mounting mode":"Fixed","[Ui] rated insulation voltage":"800 V AC 50/60 Hz","Trip unit protection functions":"I","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Zone selective interlocking ZSI":"Without","Electrical shock protection class":"Class II","Ambient air temperature for storage":"-50...85 °C","Ambient air temperature for operation":"-25...70 °C","[Uimp] rated impulse withstand voltage":"8 kV","Number of slots for electrical auxiliaries":"6 slot(s)","Short-time protection delay adjustment type tsd":"Fixed","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Ics] rated service short-circuit breaking capacity":"11 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 85 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Icu] rated ultimate short-circuit breaking capacity":"85 kA at 240 V AC 50/60 Hz conforming to UL 508 22 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 30 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 20 kA at 600 V AC 50/60 Hz conforming to UL 508 50 kA at 480 V AC 50/60 Hz conforming to UL 508 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Isd] Short-time protection pick-up adjustment range":"3840 A 3200 A 2880 A 2560 A 1600 A 4160 A 3520 A 1920 A 2440 A","[Ii] instantaneous protection pick-up adjustment range":"4800 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$766.73 – $1,296.83","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c9170b0216e977c44caa8411fefb343a.pdf","sourceUrl":"https://www.se.com/ae/en/product/LV432749/circuit-breaker-compact-nsx400n-micrologic-1-3-m-320-a-3-poles-3d/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV432749/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV432749","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/LV432749 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}