{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40H31M320","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40H31M320","canonicalUrl":"https://aoctrl.com/schneider/C40H31M320","factsUrl":"https://aoctrl.com/api/mcp/products/C40H31M320","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX, NSX400H, circuit breaker, 320 A at 65 °C, 70 kA Icu at 415 V AC, 3P, MicroLogic 1.3 M electronic trip unit, motor protection.","salesMarkdown":"## Motor protection breaker with MicroLogic 1.3 M The Schneider Electric C40H31M320 is a ComPacT NSX400H 3-pole circuit breaker rated 320 A at 65 °C, designed specifically for motor protection. Its MicroLogic 1.3 M electronic trip unit provides S (short-time) and I (instantaneous) short-circuit protection curves tailored to motor inrush and starting profiles, so it coordinates with downstream contactors and overloads without nuisance tripping on startup. Breaking capacity is 70 kA Icu at 380/415 V AC (IEC 60947-2), with a high-end 100 kA Icu at 220/240 V AC. At 480 V AC it still delivers 65 kA Icu per UL 60947-4-1, giving solid SCCR headroom for industrial motor branch circuits. The ComPacT NSX series is Schneider's main installed base for 160–630 A molded-case breakers, so spares and retrofit kits remain widely available through the distribution network. ## Electrical durability and isolation Rated for 12,000 electrical cycles at 440 V In/2 and 6,000 cycles at full 440 V In. Mechanical durability is 15,000 cycles.","metaTitle":"Schneider Electric C40H31M320 ComPacT NSX400H, 320A, 70kA","metaDescription":"Schneider Electric C40H31M320 ComPacT NSX circuit breaker, 320A at 65°C, 70kA Icu at 415V AC. Motor protection with MicroLogic 1.3 M trip unit. Current lifecycle stage, available t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40H31M320","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"255 mm","description":"Circuit breaker ComPacT NSX400H, 70kA at 415VAC, MicroLogic 1.3 M trip unit 320A, 3 poles 3d","Control type":"Toggle","Network type":"AC","Product name":"ComPacT NSX","Trip unit name":"MicroLogic 1.3 M","Number of slots":"6 slot(s)","Protection type":"S : for short time short-circuit protection I : for instantaneous short-circuit protection","lifecycle_stage":"current","Connection pitch":"45 mm","Local signalling":"Flashing LED (green) for ready to operate","Mounting support":"Backplate","Pollution degree":"3 conforming to IEC 60664-1","Trip unit rating":"320 A at 65 °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":"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","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":"12.29 W","Protected poles description":"3D","Circuit breaker mounting mode":"Fixed","[Ui] rated insulation voltage":"800 V AC 50/60 Hz","Trip unit protection functions":"SI","[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","[Uimp] rated impulse withstand voltage":"8 kV","Short-time protection delay adjustment type tsd":"Fixed","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Isd] Short-time protection pick-up adjustment range":"1600 A 1920 A 2440 A 2560 A 2880 A 3200 A 3520 A 3840 A 4160 A","[Ii] instantaneous protection pick-up adjustment range":"4800 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$760.33","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cb4171094057c6afeda6ba7f82f9714a.pdf","sourceUrl":"https://www.se.com/id/en/product/C40H31M320/circuit-breaker-compact-nsx400h-70ka-at-415vac-micrologic-1-3-m-trip-unit-320a-3-poles-3d/"},"ai":{"faq":[{"question":"What is the breaking capacity of C40H31M320 at 415 V?","answer":"70 kA Icu at 380/415 V AC per IEC 60947-2, with 65 kA Icu at 480 V AC per UL 60947-4-1."},{"question":"What trip unit does C40H31M320 use?","answer":"It ships with a MicroLogic 1.3 M electronic trip unit, rated 320 A at 65 °C, providing short-time and instantaneous short-circuit protection for motor loads."},{"question":"Where can I buy C40H31M320?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40H31M320","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/C40H31M320 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}}