{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40V31M320","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40V31M320","canonicalUrl":"https://aoctrl.com/schneider/C40V31M320","factsUrl":"https://aoctrl.com/api/mcp/products/C40V31M320","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX, C40V31M320, 3P, 320 A at 65 °C, MicroLogic 1.3 M electronic trip unit, 85 kA Icu at 500 V AC, motor protection.","salesMarkdown":"## Motor protection breaker with MicroLogic 1.3 M The C40V31M320 is a Schneider Electric ComPacT NSX circuit breaker with a 320 A rated current at 65 °C and a MicroLogic 1.3 M electronic trip unit. It is designed specifically for motor protection, with short-time (S) and instantaneous (I) protection curves. The breaker carries an 85 kA Icu breaking capacity at 500 V AC 50/60 Hz per IEC 60947-2, which means it can safely interrupt a fault current up to that level without upstream damage — critical for high-fault panels feeding motor loads. ## Selectivity and coordination for motor circuits The MicroLogic 1.3 M trip unit provides adjustable short-time pickup and delay (S protection) plus instantaneous (I) protection, allowing selective coordination with downstream contactors and overload relays. For a motor branch, the 320 A rating at 65 °C covers large drives; the 85 kA Icu at 500 V AC ensures the breaker holds under worst-case fault conditions common in industrial distribution. IP40 enclosure protection and IK07 impact resistance suit it for indoor panel installation where dust ingress is limited. Front connections both upstream and downstream simplify busbar routing and cable entry.","metaTitle":"Schneider Electric C40V31M320 ComPacT NSX 320A, 85kA Icu 500","metaDescription":"Schneider Electric C40V31M320 ComPacT NSX circuit breaker, 320A at 65°C, MicroLogic 1.3 M trip unit, 85kA Icu at 500V AC. Motor protection, current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40V31M320","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"255 mm","description":"Circuit breaker, ComPacT NSX400HB1, 75kA/690VAC, 3 poles, MicroLogic 1.3M trip unit 320A","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":"85 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 80 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 75 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2","Device short name":"NSX400HB1","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":"HB1 75 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":"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":"85 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 80 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 75 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5b26b61e97a4124509fb9265074169fa.pdf","sourceUrl":"https://www.se.com/vn/en/product/C40V31M320/circuit-breaker-compact-nsx400hb1-75ka-690vac-3-poles-micrologic-1-3m-trip-unit-320a/"},"ai":{"faq":[{"question":"What is C40V31M320's listed range (ComPacT) on this component line?","answer":"The range is ComPacT, and the product name is ComPacT NSX."},{"question":"What is C40V31M320's listed depth (d) (110 mm) on this component line?","answer":"The depth is 110 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40V31M320","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/C40V31M320 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}}