{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40N32M320","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40N32M320","canonicalUrl":"https://aoctrl.com/schneider/C40N32M320","factsUrl":"https://aoctrl.com/api/mcp/products/C40N32M320","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX, NSX400N, circuit breaker, 3P, 320 A at 65 °C, 85 kA Icu at 240 V AC, MicroLogic 2.3 M electronic trip unit, motor protection application.","salesMarkdown":"The C40N32M320: The 85 kA Icu at 240 V AC and 50 kA at 415 V AC mean this breaker can safely interrupt a fault current up to those levels without welding contacts or rupturing the housing. At 690 V AC it still holds 10 kA Icu. For a motor protection circuit on a 480 V supply (common in North American plants), the 50 kA Icu at 480 V AC per UL 60947-4-1 covers most service-entrance and downstream feeder applications — you won't need a current-limiting fuse upstream unless the available fault current exceeds that figure. ## Motor protection trip curve and thermal memory The MicroLogic 2.3 M provides L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous) protection, with selectable motor tripping classes 5, 10, and 20. The 20-minute thermal memory before and after tripping means the breaker 'remembers' prior heating — critical for motor starts in quick succession where a cold-start trip curve would allow a second start that a hot motor shouldn't get. This prevents nuisance trips on restart while still protecting the motor winding.","metaTitle":"Schneider Electric C40N32M320 ComPacT NSX400N, 320 A, 85 kA","metaDescription":"Schneider Electric C40N32M320 ComPacT NSX400N circuit breaker, 320 A at 65 °C, 85 kA Icu at 240 V AC, MicroLogic 2.3 M trip unit, motor protection, EN/IEC 60947-2, IP40. Available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40N32M320","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"255 mm","description":"Circuit breaker ComPacT NSX400N. 50kA at 415VAC. MicroLogic 2.3 M trip unit 320A. 3 poles 3d","Control type":"Toggle","Network type":"AC","Product name":"ComPacT NSX","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 2.3 M","Number of slots":"6 slot(s)","Protection type":"L : for overload protection (long time) So : for short time short-circuit protection with fixed delay I : for instantaneous short-circuit protection","lifecycle_stage":"current","Connection pitch":"45 mm","Local signalling":"Flashing LED (green) for ready to operate LED 95 % Ith (red) for temperature over set point","Mounting support":"Backplate","Pollution degree":"3 conforming to IEC 60664-1","Trip unit rating":"320 A at 65 °C","Breaking capacity":"85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 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 30 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 22 kA Icu at 525 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 85 kA Icu at 240 V AC 50/60 Hz conforming to UL 60947-4-1 50 kA Icu at 480 V AC 50/60 Hz conforming to UL 60947-4-1 20 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1","Device short name":"NSX400N","Mounting position":"Horizontal and vertical Flat on the back","Network frequency":"50/60 Hz","Poles description":"3P","Relative humidity":"0...95 %","Upside connection":"Front","Device application":"Motor protection","Operating altitude":"0...2000 m without derating 2000 m...5000 m with derating","[In] rated current":"320 A at 65 °C","Downside connection":"Front","Motor tripping class":"5 20 10","Overvoltage category":"III","Trip unit technology":"Electronic","Utilisation category":"Category A","Electrical durability":"12000 cycles at 440 V In/2 6000 cycles at 440 V In 6000 cycles at 690 V In/2 3000 cycles at 690 V In","Mechanical durability":"15000 cycles","Breaking capacity code":"N 50 kA 415 V AC","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","Power dissipation per pole":"19.2 W","Protected poles description":"3D","Circuit breaker mounting mode":"Fixed","[Ui] rated insulation voltage":"800 V AC 50/60 Hz","Complementary motor protection":"Phase unbalance","Trip unit protection functions":"LSoI","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Zone selective interlocking ZSI":"Without","Electrical shock protection class":"Class II on front face","Ambient air temperature for storage":"-50...85 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"85 kA at 220/240 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 42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 11 kA at 525 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","[Tr] Long-Time Delay Adjustment Range":"120 s at 1.5 x Ir for trip class 5 6.5 s at 6 x Ir for trip class 5 5 s at 7.2 x Ir for trip class 5 240 s at 1.5 x Ir for trip class 10 13.5 s at 6 x Ir for trip class 10 10 s at 7.2 x Ir for trip class 10 480 s at 1.5 x Ir for trip class 20 26 s at 6 x Ir for trip class 20 20 s at 7.2 x Ir for trip class 20","[Uimp] rated impulse withstand voltage":"8 kV","Long-time protection delay adjustment type tr":"Fixed","Short-time protection delay adjustment type tsd":"Fixed","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","[Ir] long-time protection pick-up adjustment range":"160...320 A","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Isd] Short-time protection pick-up adjustment range":"5...13 x Ir","[Ii] instantaneous protection pick-up adjustment range":"4800 A","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$847.57","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/93575d455dc3fe84f726deab4e28baba.pdf","sourceUrl":"https://www.se.com/za/en/product/C40N32M320/circuit-breaker-compact-nsx400n-50ka-at-415vac-micrologic-2-3-m-trip-unit-320a-3-poles-3d/"},"ai":{"faq":[{"question":"Where can I buy C40N32M320 and how do I get a price?","answer":"We source and quote this part to order against an RFQ. Submit a request and we'll confirm availability and current pricing at quote time."},{"question":"What is C40N32M320's listed range on this component line?","answer":"It belongs to the Schneider Electric ComPacT range, specifically the ComPacT NSX series."},{"question":"What compliance documentation does this brand provide for C40N32M320?","answer":"The breaker is certified to EN/IEC 60947-2 and UL 60947-4-1 standards. It carries an IP40 rating per IEC 60529 and IK07 per IEC 62262. Pollution degree 3 per IEC 60664-1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40N32M320","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/C40N32M320 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}