{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40H32D400","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40H32D400","canonicalUrl":"https://aoctrl.com/schneider/C40H32D400","factsUrl":"https://aoctrl.com/api/mcp/products/C40H32D400","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX, NSX400H, circuit breaker, 400 A, MicroLogic 2.3, 70 kA 415 V AC, 3P, toggle control.","salesMarkdown":"It carries a 400 A MicroLogic 2.3 electronic trip unit with L-So-I protection curves — long-time overload, short-time short-circuit with fixed delay, and instantaneous — so you get adjustable coordination without swapping trip packs. At 255 x 140 x 110 mm (H x W x D) and IP40 front-face protection, it fits backplate-mounted enclosures where you need front-access cabling on both line and load sides. The IK07 impact rating means it can take a knock during panel wiring or service without cracking the case. ## Breaking capacity — what the H suffix buys you At 240 V it's rated 100 kA Icu, and at 480 V it still holds 65 kA Icu under UL 60947-4-1. For a 400 A frame, that headroom handles most industrial transformer-fed buswork without cascading upstream breakers; you can size the main for selectivity rather than brute-force interrupting rating. The electronic trip unit (MicroLogic 2.3) includes thermal memory — it remembers the last 20 minutes of heating before and after a trip, so a hot reclose won't nuisance-trip on a motor inrush that a cold breaker would handle. That matters on pump or compressor circuits where restarts happen fast. Mounts flat on the backplate in both horizontal and vertical orientations — no derating for position as long as the 40 °C ambient rating is respected. Six accessory slots (aux contacts, shunt trip, under-voltage release, motor mechanism) can be populated without removing the breaker from the panel. No earth-leakage protection built in — if you need ground-fault on the same frame, you'd step to the MicroLogic 2.3M or add an external Vigi module. The toggle control is manual; no motor operator included, but the six-slot complement allows one to be retrofitted.","metaTitle":"Schneider Electric C40H32D400 ComPacT NSX400H, 400A, 70kA 41","metaDescription":"Schneider Electric C40H32D400 ComPacT NSX400H MCCB. 400A MicroLogic 2.3 trip unit, 70kA Icu at 415V AC. IEC 60947-2. Active production, sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40H32D400","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"255 mm","description":"Circuit breaker, ComPacT NSX400H, 70kA/415VAC, 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 220/240 V AC 50/60 Hz conforming to IEC 60947-2 70 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 20 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 65 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":"NSX400H","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":"H 70 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":"100 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 70 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 65 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 50 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":"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":"$887.39","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2b38a7504c9f9dd4aa2f6c8e33c3396b.pdf","sourceUrl":"https://www.se.com/vn/en/product/C40H32D400/circuit-breaker-compact-nsx400h-70ka-415vac-3-poles-micrologic-2-3-trip-unit-400a/"},"ai":{"faq":[{"question":"Where can I buy the C40H32D400 and get a price?","answer":"The C40H32D400 is sourced and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time through our industrial-automation supply desk."},{"question":"What breaking capacity does the C40H32D400 have at 415 V?","answer":"70 kA Icu at 380/415 V AC per IEC 60947-2. At 480 V AC it's 65 kA Icu under UL 60947-4-1, and at 240 V AC it reaches 100 kA Icu."},{"question":"What standards does the C40H32D400 comply with?","answer":"It complies with EN/IEC 60947-2 for low-voltage switchgear and controlgear, and UL 60947-4-1 for the North American ratings. It is certified for isolation per IEC 60947-2."},{"question":"What is the closest alternative to the C40H32D400 in the ComPacT NSX family?","answer":"Within the same NSX400H frame, the closest alternative would be a variant with a different trip unit (e.g., MicroLogic 2.3M for earth-leakage) or a different breaking capacity code (S or L). The C40H32D400 is the 400 A, 70 kA 415 V, 3-pole toggle version with MicroLogic 2.3 — pin-compatible accessories and busbar connections across the NSX400H family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40H32D400","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/C40H32D400 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}}