{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40F42D400","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40F42D400","canonicalUrl":"https://aoctrl.com/schneider/C40F42D400","factsUrl":"https://aoctrl.com/api/mcp/products/C40F42D400","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX series, C40F42D400, 400 A 4P MCCB, MicroLogic 2.3 electronic trip unit, 40 kA Icu at 240 V AC, toggle control, backplate mount.","salesMarkdown":"It is rated for distribution applications on AC networks at 50/60 Hz, with a breaking capacity of 40 kA Icu at 240 V AC (IEC 60947-2) and 36 kA at 415 V AC. The 400 A rating at 40 °C makes this breaker a fit for large feeder or main-switch duty in commercial and industrial panels where upstream fault current is high enough to demand the 40 kA interrupt rating at 240 V. The breaker complies with EN/IEC 60947-2, carries an IK07 impact rating, and is rated IP40 for the enclosure. The 185 mm width and 255 mm height fit standard switchgear cubicle cutouts; the 110 mm depth leaves clearance for rear-connected busbars or cable lugs. The toggle control provides manual on/off/tripped indication. Neutral is on the left (4P configuration). Six accessory slots are available for shunt trips, auxiliary contacts, or motor operators. The full Icu curve: 40 kA at 240 V, 36 kA at 415 V, 30 kA at 440 V, 25 kA at 500 V, 20 kA at 525 V, and 10 kA at 690 V. Under UL 60947-4-1, ratings are 85 kA at 240 V, 35 kA at 480 V, and 20 kA at 600 V. Selectivity with downstream breakers can be achieved using the short-time delay on the MicroLogic 2.3 trip unit. Electrical endurance is 12,000 cycles at 440 V at half rated current, 6,000 cycles at full rated current; mechanical endurance is 15,000 cycles.","metaTitle":"Schneider C40F42D400 ComPacT NSX 400A 4P MCCB, 40 kA","metaDescription":"C40F42D400 is a 400 A 4-pole ComPacT NSX MCCB with MicroLogic 2.3 electronic trip unit, 40 kA breaking capacity at 240 V AC. 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":"C40F42D400","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"185 mm","Height (H)":"255 mm","description":"Circuit breaker ComPacT NSX400F, 36kA at 415VAC, MicroLogic 2.3 trip unit 400A, 4 poles 4d","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","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60664-1","Trip unit rating":"400 A at 40 °C","Breaking capacity":"40 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 30 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 25 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 20 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 35 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":"NSX400F","Mounting position":"Horizontal and vertical Flat on the back","Network frequency":"50/60 Hz","Poles description":"4P","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":"F 36 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","Neutral protection setting":"0.5 x Ir (3D + N/2) 1 x Ir (4D) No protection (3D)","Power dissipation per pole":"19.2 W","Protected poles description":"4D 3D + N/2 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":"40 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 10 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":"$875.96","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dd2bfac5db532f7a8526dd893f922321.pdf","sourceUrl":"https://www.se.com/id/en/product/C40F42D400/circuit-breaker-compact-nsx400f-36ka-at-415vac-micrologic-2-3-trip-unit-400a-4-poles-4d/"},"ai":{"faq":[{"question":"What is the breaking capacity of C40F42D400 at 415 V?","answer":"The breaking capacity is 36 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2, corresponding to breaking capacity code F."},{"question":"What trip unit does C40F42D400 use?","answer":"It uses 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."},{"question":"How do I get current pricing and availability for C40F42D400?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the distributor for a current quote with lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40F42D400","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/C40F42D400 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}}