{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6401-7CP","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6401-7CP","canonicalUrl":"https://aoctrl.com/siemens/5SN6401-7CP","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6401-7CP","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SN series, MCB 5SN6401-7CP, 4-pole, C-curve, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2), 72×90×76 mm.","salesMarkdown":"It's rated at 400 V AC, 50 Hz, and carries a 6 kA breaking capacity per EN 60898 alongside a 30 kA rating per IEC 60947-2 — the higher figure governs industrial panel coordination where fault current levels are known and selectivity matters. Four poles let this breaker switch all three phases plus neutral in a single unit — common for three-phase loads where neutral isolation is required, like distribution sub-feeds or multi-circuit panels. The C-curve (implied by class and peer context) trips at 5–10× rated current, suited for motor and transformer inrush without nuisance opening. The 30 kA IEC 60947-2 rating is the number that matters for industrial panel SCCR compliance. The 6 kA EN 60898 figure applies to residential or light commercial installations where the prospective fault current is lower. At 72 mm wide and 4 modular width units, this breaker occupies four 18 mm slots on a DIN rail. Panel space is tight — that's 18 mm more than a 3-pole unit, so verify the rail length and adjacent device clearance before committing the layout. Snap-on DIN rail mounting (standard for the 5SN series) means it clips directly onto a 35 mm rail inside a distribution board or control panel.","metaTitle":"Siemens 5SN6401-7CP 4P MCB, 6 kA EN 60898 / 30 kA IEC 60947-","metaDescription":"Siemens SENTRON 5SN6401-7CP 4-pole MCB, C-curve, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2). 72 mm wide, 4 MWU. Active lifecycle — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SN6401-7CP","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"MCB 5SN","Number Of Poles":"4","lifecycle_stage":"current","Installation Depth":"70 mm","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Supply Voltage Frequency Rated Value":"50 Hz","according to IEC 60947-2 rated value":"30 kA","with multi-phase operation at AC maximum":"440 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","Connectable Conductor Cross-Section Solid Maximum":"35 mm²","Mechanical Service Life (Operating Cycles) Typical":"10 000","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4d10c4c713399efad7690b4bcae47ae0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1647299&mlfb=5SN6401-7CP"},"ai":{"faq":[{"question":"What is 5SN6401-7CP's listed depth (76 mm) on this component line?","answer":"Overall depth is 76 mm; installation depth behind the panel surface is 70 mm. The difference accounts for the front toggle and terminal clearance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6401-7CP","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SN6401-7CP 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}}