{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40W32D400","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40W32D400","canonicalUrl":"https://aoctrl.com/schneider/C40W32D400","factsUrl":"https://aoctrl.com/api/mcp/products/C40W32D400","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX, NSX400HB2, circuit breaker, 400A, 3P, 100kA Icu at 690V AC, MicroLogic 2.3 electronic trip unit, toggle control.","salesMarkdown":"## What this 400 A ComPacT NSX breaker delivers The C40W32D400 is a Schneider Electric ComPacT NSX400HB2 molded-case circuit breaker rated 400 A at 40 °C with a MicroLogic 2.3 electronic trip unit. It breaks up to 100 kA Icu at 500 V AC, 525 V AC, and 660/690 V AC 50/60 Hz per IEC 60947-2 — that is full-rated interrupting capacity across the common industrial voltage bands, so you do not have to derate the breaker when the line voltage drifts up from 480 to 525 V or lands on a 690 V corner-grounded delta. The 3-pole form factor (140 mm wide, 255 mm tall, 110 mm deep) mounts on a backplate in horizontal or vertical orientation, and the front-face toggle gives the operator a visible, positive break for lockout-tagout. The IP40 front face keeps tools and fingers out of live parts; the IK07 impact rating handles the occasional dropped screwdriver or panel door slam. Because this is an active, high-volume catalog item, lead times are typically standard for the class — the procurement decision is whether the 400 A rating and 100 kA breaking capacity match your fault-current study, not whether you can get the part. ## Integration and mounting notes The 45 mm connection pitch lines up with standard busbar systems and cable lug spacing. Six accessory slots are available for auxiliary contacts, alarm switches, shunt trips, or under-voltage releases. Plan the slot allocation before wiring — the toggle handle and LED indicators (green for ready, red at 105 % Ir overload, orange at 90 % Ir pre-alarm) are visible through the front cover, so the operator gets a quick status check without opening the panel door. Electrical durability is rated at 12,000 cycles at 440 V In/2 and 6,000 cycles at 440 V In; mechanical durability is 15,000 cycles. For a distribution breaker that sees infrequent switching, that is effectively a lifetime rating. If the breaker is used for daily motor switching, the electrical endurance at 690 V (3,000 cycles at In/2, 6,000 at In) becomes the limiting factor — plan for replacement earlier in that duty cycle. The suitability-for-isolation marking (yes, per EN/IEC 60947-2) means the breaker can serve as a visible disconnect point in the circuit — no separate disconnect switch needed upstream for many installations. Operating altitude is 0 to 2000 m without derating; above 2000 m up to 5000 m, derate the continuous current per the manufacturer's altitude correction factors.","metaTitle":"C40W32D400 ComPacT NSX 400A 3P 100kA 690V AC Circuit Breaker","metaDescription":"Schneider Electric C40W32D400 ComPacT NSX400HB2 circuit breaker, 400A, 3P, 100kA Icu at 690V AC, MicroLogic 2.3 trip unit. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40W32D400","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"255 mm","description":"Circuit breaker, ComPacT NSX400HB2, 100kA/690VAC, 3 poles, MicroLogic 2.3 trip unit 400A","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":"400 A at 40 °C","Breaking capacity":"100 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 100 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 100 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2","Device short name":"NSX400HB2","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":"400 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":"HB2 100 kA 690 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":"100 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 100 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 100 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":"160...400 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":"4800 A","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$915.89 – $1,316.05","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4eb9fa8a101e3c7c06c213665e2f95aa.pdf","sourceUrl":"https://www.se.com/vn/en/product/C40W32D400/circuit-breaker-compact-nsx400hb2-100ka-690vac-3-poles-micrologic-2-3-trip-unit-400a/"},"ai":{"faq":[{"question":"How do I get current pricing and availability for the C40W32D400?","answer":"Pricing and availability are confirmed at quote time. Submit an RFQ against this order code — the part is sourced through independent distribution and quoted to order with current market pricing and lead time."},{"question":"What is the breaking capacity of the C40W32D400?","answer":"100 kA Icu at 500 V AC, 525 V AC, and 660/690 V AC 50/60 Hz per IEC 60947-2. That is the full rated interrupting capacity at each voltage — no derating curve to calculate."},{"question":"What trip unit does the C40W32D400 use?","answer":"A MicroLogic 2.3 electronic trip unit with L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection. Thermal memory holds 20 minutes before and after tripping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40W32D400","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/C40W32D400 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}}