{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40N32D250","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40N32D250","canonicalUrl":"https://aoctrl.com/schneider/C40N32D250","factsUrl":"https://aoctrl.com/api/mcp/products/C40N32D250","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX400N, 3P, 250 A, MicroLogic 2.3 electronic trip unit, 50 kA Icu at 415 V AC, EN/IEC 60947-2.","salesMarkdown":"## ComPacT NSX400N — 250 A Distribution Breaker with MicroLogic 2.3 The C40N32D250 is a Schneider Electric ComPacT NSX400N three-pole circuit breaker rated 250 A at 40 °C, fitted with a MicroLogic 2.3 electronic trip unit. It provides L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection — a standard combination for distribution and feeder protection in commercial and industrial panels. Rated for isolation per EN/IEC 60947-2, it suits main or branch feeder duty where a visible break and lockout-tagout capability are required. The N breaking capacity code delivers 50 kA Icu at 415 V AC, 85 kA at 240 V AC, and 30 kA at 500 V AC. At 690 V AC it still holds 10 kA Icu. Category A utilization means no intentional short-time delay for selectivity. Coordination with downstream breakers relies on the instantaneous trip threshold of the MicroLogic 2.3. The 140 mm width, 255 mm height, and 110 mm depth fit standard distribution panel cutouts. Front connection for both line and load sides simplifies busbar or cable routing. IP40 enclosure protection (IK07 impact resistance) suits indoor panel installation; no additional sealing is required for clean environments. Six equipment slots allow auxiliary contacts, shunt trips, undervoltage releases, or communication modules to be added without removing the breaker. The 45 mm connection pitch matches standard busbar systems.","metaTitle":"Schneider Electric C40N32D250 ComPacT NSX400N, 250 A, 50 kA","metaDescription":"Schneider Electric C40N32D250 ComPacT NSX circuit breaker, 250 A, MicroLogic 2.3 electronic trip unit, 50 kA Icu at 415 V AC, EN/IEC 60947-2. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40N32D250","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"255 mm","description":"Circuit breaker, ComPacT NSX400N, 50kA/415VAC, 3 poles, MicroLogic 2.3 trip unit 250A","Control type":"Toggle","Network type":"AC","Product name":"ComPacT NSX","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 2.3","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 105 % Ir (red) for overload LED 90 % Ir (orange) for overload","Mounting support":"Backplate","Pollution degree":"3 conforming to IEC 60664-1","Trip unit rating":"250 A at 40 °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":"Distribution","Operating altitude":"0...2000 m without derating 2000 m...5000 m with derating","[In] rated current":"250 A at 40 °C","Downside connection":"Front","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","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":"400 s at 1.5 x Ir 16 s at 6 x Ir 11 s at 7.2 x Ir","[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":"70...250 A","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"3000 A","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$782.11","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/814c2483cbe89486e045a68cf70ec445.pdf","sourceUrl":"https://www.se.com/sa/en/product/C40N32D250/circuit-breaker-compact-nsx400n-50ka-415vac-3-poles-micrologic-2-3-trip-unit-250a/"},"ai":{"faq":[{"question":"What is the breaking capacity of C40N32D250 at 415 V?","answer":"50 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2. This is the N breaking capacity code — suitable for high-fault 415 V distribution boards."},{"question":"What protection curves does the MicroLogic 2.3 trip unit provide?","answer":"L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit). The electronic trip unit includes thermal memory that retains the thermal state for 20 minutes before and after tripping."},{"question":"What are the mounting dimensions for C40N32D250?","answer":"140 mm wide, 255 mm high, 110 mm deep. Mounts on a backplate in horizontal or vertical orientation with front connections for line and load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40N32D250","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/C40N32D250 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}}